The Overflow | Winter 2024

Quarterly Publication of Irrigation Australia (WA Region)

NO. 77 WINTER 2024

IN THIS ISSUE Modernising The Vines Golf Course: Part 3

The Winter Sprinkler Switch-off is here

Permits in the pipeline for WA rainwater system installers

Why choose natural turf over plastic alternatives?

The economics of irrigated urban parks

Government House: A testament to pristine water quality and innovation

Gnangara groundwater allocation plan

Gingin Evaluation Statement released

9th ASIAN REGIONAL CONFERENCE Irrigation & Drainage

REGISTRATIONS CLOSING 16 AUGUST 2024

75th IEC MEETING 1 - 7 September 2024 | ICC Sydney

ICID.CIID

FULL CONFERENCE PROGRAM NOW LIVE!

CONFERENCE & EXHIBITION 2 - 4 September 2024 | ICC Sydney

INTERACTIVE ZONE

NETWORKING LOUNGE

The exhibition hall will feature an ‘Interactive Zone’ with a stage and seating area, providing an opportunity for exhibitors and sponsors to present ideas, new technologies, and have a bit of fun.

Take advantage of our central networking lounge, which will be located in the heart of the exhibition hall, with informal seating to allow delegates to meet and connect in an informal setting.

POSTER PRESENTATIONS

EXHIBITION HALL

Come meet the authors at our designated poster area!

The exhibition hall will be the centerpiece of the 2024 Conference & Exhibition. This expansive space is where innovation meets opportunity, allowing exhibitors from around the globe to showcase the latest technologies, services, and ideas shaping our industry.

The exhibition space will feature a walk-through poster area along with seating to accommodate for short poster presentations.

URBAN WATER WORKSHOP -

TECHNICAL TOURS

FULL PROGRAM

Participate in an Urban Water Workshop and training sessions to help drive smarter installation and system management, ensuring better bang for the public dollar.

Explore technical tours highlighting the latest innovation in Sydney, in partnership with Sydney Water and other hosts.

Scan here to view the full preliminary program!

COUNCIL AND IRRIGATION INDUSTRY PARTNERSHIPS

IN SYDNEY

NOW LIVE

WOMEN IN WATER PANEL SESSION

MULTIPLE PLENARY SESSIONS

Share valuable insights and nurture partnerships!

Join leading experts, industry pioneers, and visionary thinkers as they share insights on the latest advancements, trends, and challenges in the irrigation and drainage industry.

Join us for the Women in Water Breakfast and panel session on Tuesday the 2nd of September to connect, empower, and celebrate with fellow females working in the irrigation and drainage industry.

Each plenary session is designed to provide a comprehensive understanding of the critical issues facing our water management systems today.

MAJOR SPONSORS

PRINCIPAL SPONSOR

PRINCIPAL SPONSOR

MAJOR SPONSORS

CONTACT

Register for the event here!

Irrigation Australia Ltd

The Event Gap

(07) 3517 4000

(02) 8607 1413

irrigation2024@theeventgap.com.au

irrigation2024@theeventgap.com.au

Contents Modernising The Vines Golf Course: Part 3

8

Permits in the pipeline for WA rainwater system installers 12

WA Office Staff Rebecca New National Membership Manager

The economics of irrigated urban parks

14

Abby McCorriston

NGIWA and GIA partner with DWER to champion waterwise practices in nurseries and tree farms in the Gnangara Region

18

The Winter Sprinkler Switch-off is here

20

Gingin Evaluation Statement released

22

Junior Administrator

Government House: A testament to pristine water quality and innovation 24 Why choose natural turf over plastic alternatives?

Front Cover: The Vines Golf Course

rebecca.new@irrigation.org.au

29

abby.mccorriston@irrigation.org.au Waterwise Administrative Support adminsupport@irrigation.org.au

The Overflow is the quarterly publication of Irrigation Australia (WA Region). Articles published are views expressed by the authors. Irrigation Australia is not responsible for their accuracy and disclaims any liability which may arise from any person acting on the materials contained within.

Editorial content does not necessarily represent the views or policy of Irrigation Australia (WA Region) Publisher/Editor: Irrigation Australia – WA Region PO Box 2249, Malaga WA 6090 Tel: (08) 6263 7774

Authorised sprinkler testing signs If you are testing an irrigation system outside of water rostering hours, as a gardening industry professional, you are not required to register for an exemption with the Water Corporation. However, to promote that you are doing authorised work and avoid a possible infringement, we recommend you have a sign clearly displayed at the front of the property.

Updated designs are now available: 1. Magnetic 2. Corflute 3. Car Decals 4. Metal Swing and Stand For pricing and product availability, please get in touch with the WA Office at 6263 7774.

The Overflow | Winter 2024

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Industry Events

Training Programs

EVENT

DATES

LOCATION

Certified Irrigation Installer

12 - 15 Aug

Brisbane, QLD

Certificate III in Irrigation Technology - QLD

Commencing 19 Aug

Brisbane, QLD

Meter Installation & Validation

20 - 23 Aug

Virtual Delivery

IALWA Member Event - Ascot Racecourse

22 Aug

Ascot, WA

Certificate III in Irrigation Technology - NSW

Commencing 26 Aug

Paterson, NSW

Irrigation Australia Conference & Exhibition

1 - 7 Sept

Sydney, NSW

Certified Irrigation Installer

9 - 12 Sept

Paterson, NSW

Meter Installation & Validation

24 - 26 Sept

Adelaide, SA

Meter Installation & Validation

24 - 26 Sept

Dubbo, NSW

Electrofusion & Butt Welding

26 - 27 Sept

Keysborough, VIC

Certificate III in Irrigation Technology - WA

Commencing 30 Sept

Perth, WA

Meter Installation & Validation

1 - 3 Oct

Paterson, NSW

Irrigation Pumps & Systems

8 - 10 Oct

Perth, WA

IALSA Member Event - Watershed Function

16 Oct

Mason Lakes, SA

WA 2024 Annual Regional Meeting

22 Oct

WA Office/Virtual

Electrofusion & Butt Welding

17 - 18 Oct

Brisbane, QLD

Meter Installation & Validation

22 - 24 Oct

Brisbane, QLD

Certificate III in Irrigation Technology - SA

Commencing 28 Oct

Adelaide, SA

Electrofusion & Butt Welding

19 - 20 Oct

Paterson, NSW

Click here for a full list of our upcoming Industry Events and Training Programs.

Chairperson's Report

From the CEO

Alison Waters

Dave Cameron

The Perth Metro area received only 30mm of rainfall from October 2023 to May 2024. This dry season sparked discussions about extending the irrigation season into June. I’ve had to invest in liquid and granular wetting agents and kelp products to ensure sports turf could sustain the prolonged dry periods.

I’m sure many of us were ecstatic for rainfall in June. This seasonal adjustment has got many people thinking of the best management techniques for future seasons.

Hello…

I’ve just returned from the Australian Sports Turf management Conference in Brisbane. Over three days we discussed all things turf, irrigation, AI, robotic mowers and much more. The Trade expo was the largest in Australia and many of the key suppliers were demonstrating their latest products and technology. I learnt about wireless nodes, new soil moisture sensors and nanobubble oxygen treatment.

The Department of Water and Environmental Regulation recently released the Gingin groundwater and surface water allocation plans. The Annual average rainfall in the Gingin area is 9% lower and is also decreasing due to decreased streamflow and groundwater recharge. The Leederville Parmelia aquifer has decreased by 10 meters since the 1990s due to decreased rainfall recharge and abstraction. Gingin’s primary irrigators are Agriculture and Horticulture Industries including piggeries, poultry farms, citrus, grapes, lettuce, blueberries, mangoes and cauliflower. Link below to access the document Gingin groundwater and surface water allocation plans: 2024 evaluation statement (www.wa.gov.au) The regional office has moved from Cockburn Central to Malaga, and the new address has recently been shared. If you missed it, you'll find it on page 6.

We are celebrating 20 years of the Waterwise Programs, a fantastic achievement for all our Waterwise irrigators and retail outlets. To mark this milestone, Irrigation Australia is hosting a networking event in August, and I look forward to seeing you there.

The new financial year is upon us and I hope we continue to get consistent rainfall.

Alison Waters Irrigation Australia (WA) Industry Chairperson

Our major conference has been all-consuming for 2024 and earlier and the team at Irrigation Australia is very much looking forward to a chance to refocus our efforts on our Association’s strategic direction and initiatives to build member value.

It’s never been a better time to consider being an Irrigation Australia member or considering training for yourself or staff through our RTO. It was great catching up with members and stakeholders recently in Perth, thanks to all who were so hospitable and shared plenty of ideas to improve the Association. The things we’d do with a few more people and money in the bank…

Bec, Abby and the committee have a lot on the agenda but the most conspicuous to me at the moment are rejigging our partnership agreements and work plans with DWER and Water Corporation, the 20th anniversary Waterwise celebrations and getting into the serious work for next year’s Expo.

Somewhat frustratingly, I have a fair idea about some awards and other significant recognition coming up for Western Australian members but probably can’t talk about them as I reckon this will be published before they are formally presented. Watch this space I guess.

We are all looking forward to having the conference out of the way and working on a good list of ideas developed through the board’s strategic session earlier in the year, all geared towards delivering our purpose – “to support the adoption of efficient and productive irrigation practices across Australia’s food and fibre markets, leisure activity spaces and commercial activities to ensure the best use of our most precious resource.”

There are many ways to get involved and our volunteers, whether Directors, committee members or just casual supporters for events and other activities are crucial to the growing success of the Association. For current members, don’t forget our AGM is on 13 November with the Constitution review being a critical agenda item. There will also be 5 Directors roles up for re-nomination/ election.

Finally, a big thanks to all of our conference supporters – delegates, exhibitors and key sponsors and our Irrigation Futures sponsors – companies which commit to investing in the Association annually, with their investment going directly towards driving industry profile and policy, best practice, skilling and careers.

Dave Cameron Irrigation Australia Chief Executive Officer

The Overflow | Winter 2024

5

Regional Update

By Rebecca New, National Membership Manager

Welcome to the Winter edition of The Overflow.

After enduring the hottest and driest summer on record, with Perth matching its 1962 record for the longest run of May days above 25°C and receiving only 19.2mm of rain from February to April, the rain finally arrived in late May. However, only 111.4mm of rain fell in June 2024, compared to 228.6mm the previous year.

The Winter Sprinkler Switch-off is now in effect and is mandatory for all scheme and bore water users in Perth, Mandurah, and some parts of the South West and Great Southern. This applies to both businesses and households. The switch-off runs from 1 June to 31 August each year, helping to conserve precious water for when it is needed most.

The WA Regional Committee convenes monthly to assess regional initiatives, ensuring alignment with the KPIs of our stakeholders—the Department of Water & Environmental Regulation and Water Corporation. Furthermore, plans are in motion to secure a venue for the 2025 Waterwise Irrigation Expo.

Join us for a dynamic day filled with workshops, field activities, industry insights, supplier engagements, and the newest technological advancements! For further information, please reach out to myself.

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The Overflow | Winter 2024

Irrigation Australia kicked off its first member event of 2024 with an excellent turnout! With the support of Western Irrigation Pty Ltd and The Vines Resort, we delved into the replacement of the golf course's irrigation system. Members were keen to hear from the Golf Course Superintendent, Western Irrigation, Rain Bird Corporation, and Living Turf about this extensive collaborative project. A big thank you to all participants and presenters for making this event a success! For more detailed information on these topics, check out part three of this project on page 8. Special thanks to Western Irrigation for capturing fantastic drone footage of the event.

To view photos and video of the event, click here.

The WA office is actively identifying additional suitable venues for hosting member events and will send out invitations as soon as they are confirmed.

Do you have a fantastic idea for a member event? Would you like to share your work with other industry members?

Reach out to Rebecca New, Membership Manager, at rebecca. new@irrigation.org. au or call 08 6263 7774.

WA Office Relocation We are thrilled to announce that we have relocated from Cockburn Central to our new office in Malaga.

Our new address is: Unit 7/2 Mulgul Road, Malaga WA 6090 PO Box 2249, MALAGA WA 6944 Please update your records and accounting systems with this new information.

Waterwise – Winter 2024 Exciting News! The Waterwise Programs are celebrating their 20th anniversary this year! Irrigation Australia and Water Corporation are joining forces to mark this milestone with our current Waterwise members, the businesses that have supported the programs, and the original pioneers, without whom our efforts to promote these initiatives to the industry and the community would not have been possible. The celebration event has concluded. Click the invite to view photos and videos from the occasion.

Random audits for both the Waterwise Irrigation Design Shops and Waterwise Garden Irrigator Program audits have been successfully concluded.

These audits have been beneficial for both the Program Administrator and members alike. The Waterwise Programs are integral to Irrigation Australia’s efforts to promote knowledge and skills in water efficiency, supporting our industry and its members (as well as broader society) to thrive in a drying climate.

Irrigation Australia is collaborating closely with Water Corporation on new initiatives that will be introduced as the season begins. These efforts aim to enhance water conservation and improve efficiency for the future.

If you are interested in knowing how your business can benefit from being a Waterwise member, please visit: http://www.waterwiseprograms.com. au select your location and click on “Become Waterwise” or contact the WA office on 6263 7774.

Irrigation Australia hosts a number of digital platforms that attract a broad audience from the entire supply chain of the irrigation industry including retailers, installers/contractors, landscapers, irrigation professionals, manufacturers, primary producers, students, scientists, researchers and state/local government agencies.

The Advantages of Digital Publications • Digital editions available to readers immediately after publishing • Available to access anywhere at any time • Live links to websites, emails and phone numbers from the articles or adverts • Creates options to use video advertisements • Precise analytics on distribution and readership • Digital publications will be widely distributed electronically using all Irrigation Australia online platforms (ee-news, Social Media, Websites, EDM’s, etc..)

The Overflow | Winter 2024

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Part 3

Modernising The Vines Golf Course Article supplied by The Vines Golf Course and Western Irrigation In the Winter 2023 edition of The Overflow, we provided part 2 of the pump station upgrade at The Vines Golf Course. To read this article, please click here.

In previous issues, we explored the initial stages of the irrigation project at the Vines Golf Course.

This included the ambitious goals set to revamp the irrigation system, emphasising sustainability and efficiency. Now, in Part 3, we delve into the intricate details of the design and installation phases, showcasing the meticulous planning and execution that has gone into transforming the course.

8

The Overflow | Winter 2024

Design Phase: A Collaborative Effort The design phase of the project was marked by extensive consultations between the Golf Course Superintendent Brad Pavlinovich and Rick Charles, Senior Designer and Project Manager for Western Irrigation, both seasoned experts whose insights were invaluable. From the outset, the team realised the vastness of the course, admitting to Brad that they had initially underestimated its size. This acknowledgment led to a deeper collaboration, resulting in a comprehensive wish list from Brad, which was fully approved and integrated into the final design.

Central to the design was a focus on water efficiency. The new system was engineered to complete its watering cycle overnight within 6-8 hours. This efficiency was achieved through: •

Hard Edges: Ensuring precise application of water without wastage.

•

High Coefficient and Distribution Uniformity: Achieving over 90% uniformity to ensure even water distribution.

•

Advanced Sprinklers: Utilising sprinklers with high application rates and heavy droplets to mitigate wind interference, reduce runtime, and save power.

Installation Phase: Precision and Challenges The installation phase was meticulously planned, with a phased approach to minimise disruption.

Each 9-hole segment of the course was closed for two weeks at a time, allowing the installation team to work efficiently. The team was composed of two subcontractors and an in-house crew: •

Subcontractor 1: Specialised in welding and installation of the mainline.

•

Subcontractor 2: Focused on the installation of irrigation laterals.

•

In-house Team: Included two site supervisors and three to four technicians handling tie-ins between subcontractors, such as poly welding saddles and cable connections.

The installation was not without its challenges. The team encountered a high-water table, various types of clay, and large boulders, along with unknown underground pipework infrastructure. Moreover, they had to keep the existing system under construction operational during the summer months, ensuring all other parts of the course remained playable while installation proceeded.

Materials and Techniques The mainline installation was a significant undertaking, comprising: •

450mm Poly from the Pump Station: Extending across the 18th fairway and branching into 400mm for two holes on either side, then 355mm forming the ring main.

Additional 200mm and 160mm sections were also used, with a total length of 9.44 km.

•

Sluice Valves: A total of 46 valves ranging from 450mm to 100mm, with at least two valves per hole, and par-5 holes featuring a central valve.

•

Ball Valves: 366 ball valve assemblies for the laterals.

The Overflow | Winter 2024

9

The project has also fostered a sense of community involvement. Local contractors were engaged, providing employment and supporting the local economy. Additionally, by supporting the playability of the course during peak seasons, the project ensures that the community continues to enjoy this valuable recreational asset.

The irrigation system included: •

QCV Units: 36 units strategically placed at the back of each green and midway on fairways.

•

Conduit and Cable: Main trunk cables were housed in conduits, with a total length of 12.7 km. The cables used were Rainbird Maxi Cable, with total lengths reaching approximately 48 km. Surge protection devices were placed along the wire paths, totalling 100 units.

•

•

Laterals and Sprinklers: Mainly 75mm and 90mm ring laterals on the greens, connected by 110mm poly from the mainline, totalling 33 km.

The system featured 2,300 Rainbird valve-in-head sprinklers, individually controlled and programmed.

Wire Connectors: Approximately 6,000 connectors used for joining cables.

Enhanced Efficiency and Sustainability The design's emphasis on water efficiency not only helps conserve this precious resource but also ensures that the course stays green and vibrant throughout the year. The new system allows for precise control over water distribution, significantly reducing wastage and promoting healthier turf.

By optimising sprinkler run times and utilising equipment designed for high

10

The Overflow | Winter 2024

performance in windy conditions, the project also aims to cut down on energy consumption. This is a crucial aspect, as it aligns with broader sustainability goals and reduces the overall carbon footprint of the course.

The state-of-the-art materials and technology used in the new system are designed for durability and ease of maintenance. This reduces the need for frequent repairs and replacements, allowing the course maintenance team to focus more on course quality and less on irrigation issues.

An efficiently watered golf course can have positive effects on the local environment. The reduced water runoff helps prevent erosion and protects nearby water bodies from potential contamination by fertilisers and other chemicals used on the course.

The Vines Golf Course irrigation project exemplifies a blend of advanced design, collaborative planning, and meticulous installation. By focusing on water efficiency and using state-ofthe-art materials and techniques, the course is set to become a model of modern irrigation. This transformation not only ensures sustainability but also enhances the playability and aesthetics of the course, promising an improved experience for all golfers.

The next phase will focus on testing and fine-tuning the system to ensure optimal performance. This will include detailed monitoring and adjustments to the irrigation schedules based on real-time data and feedback from the course. Stay tuned for further updates on this groundbreaking project as it continues to unfold.

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Permits in the pipeline for WA rainwater system installers Building and Energy is reminding WA workers who install water supply plumbing services from rainwater tank outlets to buildings that they will soon need to apply for a fee-free restricted plumbing permit.

The new permit category – restricted plumbing permit (rainwater storage) – aligns with the forthcoming regulation of plumbing work on non-metered water supply plumbing services, including water supply plumbing connected to rainwater storage systems.

Applications for the new permit open on 10 February 2025, which is also the start date for the expanded regulation and other remaining plumbing reforms following amendments to the Plumbers Licensing and Plumbing Standards Regulations 2000.

The three-year restricted plumbing permit authorises a worker to carry out water supply plumbing work from a rainwater storage system to a building.

It does not apply to any other water supply plumbing work.

A four-month grace period, to 10 June 2025, will allow installers who have applied for the permit to continue carrying out the relevant work while their application is considered.

No fee will be charged for the permit application, issue and first renewal.

However, Building and Energy emphasises that applications for the permit will only be considered for one year. All applications must be received by 10 February 2026.

Key dates – Restricted plumbing permit (rainwater storage) 10 February 2025 : Permit applications open 10 June 2025: End of grace period (when work is allowed while the Board considers an application) 10 February 2026: Permit applications close 2028 – 2029: Three-year permit expiry and renewal applications

Rainwater tank

Plumbing work demarcation is the outlet of the isolation valve

Application forms for the permit will go live on the Building and Energy website on 10 February 2025. Applicants must fulfil three requirements: attendance at an induction course prior to lodging an application, demonstrated experience and a National Police Certificate.

From August 2024, Building and Energy will provide in-person and online induction courses where permit applicants will learn about the scope of permitted work, certification requirements and the prescribed plumbing standards that apply to the work. To express interest in attending an induction, please email your full name, postal address, individual email and phone number to plumbingreview@dmirs.wa.gov.au.

When applying for a permit, the applicant must demonstrate appropriate experience including evidence of at least two installations

Diagram 1 – Water supply plumbing installation from a rainwater tank serving all fixtures. The pink section applies to the restricted plumbing permit (rainwater storage).

Rainwater discharge from gutter to tank

Overflow

Saj Abdoolakhan Building Commissioner

Alternative water supply to all fixtures

Pump

Restricted permit holder (rainwater) work demarcation point is the building

Non-regulated work

12

Regulated plumbing work to be installed and certified by a licensed plumber or restricted permit holder (rainwater storage)

The Overflow | Winter 2024

Plumbing work to be installed and certified by a licensed plumber

Diagram 2 – Water supply plumbing installation from a rainwater tank and switching device with mains backup to fixtures approved for use with rainwater.

Rainwater discharge from gutter to tank

Sign at outlet as per AS/NZS 3500.1:2021, section 15

Overflow Rainwater tank

Rainwater pipework to specific fixtures clearly marked as per AS/NZS 3500.1:2021, section 15 Switching device

Water services provider supply

Pump

Plumbing work demarcation is the outlet of the isolation valve

Non-regulated work

Non-testable backflow device

Restricted permit holder (rainwater) work demarcation point is the building

Regulated plumbing work to be installed and certified by a licensed plumber or restricted permit holder (rainwater storage)

they have carried out related to the supply of water from a rainwater storage system to a building in the five-year period up to 10 February 2025. Evidence for this work must be a letter from an employer or an invoice from a customer, with contact details, describing the work and the full address where it occurred.

More information on the new licensing requirements for rainwater system

installers is available in Building and Energy’s Industry Bulletin 164 (available at demirs.wa.gov.au). Other industry bulletins outline additional improvements to plumbing regulation in WA for public health, safety and environmental reasons. For example, Industry Bulletin 165 describes the changes coming into effect on 10 February 2025: •

Mains water supply to other fixtures

Plumbing work to be installed and certified by a licensed plumber

on non-metered drinking water supplies and standards for modular plumbing equipment installations.

•

Water supply plumbing work across WA must only be carried out by a licensed plumber or permit holder – regardless of the water supply system to which it connects.

•

Additional Building and Energy plumbing inspectors.

Regulation of plumbing work

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A new approach to urban park design could benefit the environment, the community and council budgets.

The economics of irrigated urban parks Eve White, Irrigation Australia Originally published in the Irrigation Journal Summer 2023 – Volume 39 No 04 SNAPSHOT • Research from the University of Western Australia has found that having an irrigated park nearby has a measurable impact on property prices for low and medium density housing.

• For high-density housing, being close to non-irrigated parks also resulted in higher property values.

• Average property price increases by up to $3800 for each one per cent increase in park area.

• The study also found that people prefer park designs with more native vegetation and less irrigated grass than traditional park designs.

• Councils and the community could benefit by rethinking park design.

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The Overflow | Winter 2024

New research from the University of Western Australia has found that having an irrigated park nearby can have a measurable impact on property prices. The work also shows that people prefer park designs with more native vegetation and less irrigated grass. By rethinking park design norms, councils, the environment, and the community could benefit.

Councils across Australia face the challenge of providing quality open spaces for a growing population while contending with increasing water scarcity. Recent work by Claire Doll from the University of Western Australia could help councils rethink park design. By adopting a new approach, councils could reduce costs and water use while providing residents with the kind of parks they want.

First study to integrate irrigation data One question that Claire’s work addressed was how nearby parks, which differ in their watering requirements, influence property values.

“Other studies have looked at the general influence of nearby parks on property prices,” says Claire.

“But this was the first study to integrate information about how much water goes into maintaining different parks.”

The research focussed on how distance to irrigated and non-irrigated parks influences property prices of low, medium and high-density properties.

“We wanted to get a dollar-value estimate of irrigated versus nonirrigated parks,” Claire says.

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“We looked at property sales prices over the last five years and tried to explain them using information about the structural components of properties – things like size, number of bedrooms, whether they had a pool.

“We also included neighbourhood components, such as nearby schools and suburbs. Finally, we separated out environmental values, one of these being the distance to nearby parks.”

Claire worked with eight local governments, which provided data on the irrigated area of parks and how much water is used to irrigate each. The study included 1,700 parks occurring within a 250 m radius of 50,000 residential properties.

Irrigated parks boost property prices The study found having a park nearby can influence the price of a property – but this depends on both the type of residence and on the characteristics of the park.

“Other studies have investigated the general influence of nearby parks on property prices, but this is the first study to integrate how much water goes into maintaining parks.”

Claire Doll, PhD candidate, the University of Western Australia.

“We found that for low-density housing, only small, irrigated parks positively contribute to sales prices.

For medium-density properties, large, irrigated parks positively influence property prices. However, non-irrigated parks have no effect on property prices for either of these property types,” says Claire.

Table 1. Increase in property prices with every one per cent increase in park area

Perhaps unsurprisingly, the study found that for high-density housing (apartments and condos) with limited or no outdoor space, property prices are higher if the residence is close to any park, regardless of its size or whether it is irrigated.

Claire also conducted a large survey of Perth residents to determine their preferred mix of different groundcovers in urban parks. Participants were asked to choose between park designs that varied in terms of ratio of watered grass to other groundcovers.

With a one per cent increase in park area, average property prices increased by between 0.001 per cent and 0.009 per cent (see Table 1). To put this in perspective, the average property price increased by $1000 or more for each one per cent increase in park area.

“We found that the ideal amount of watered grass in local and neighbourhood parks may be lower than current practices,” says Claire.

People were also willing to pay $214 per year per household for changes from the baseline to optimal park design.

People expressed a range of preferences but overall, the mostpreferred park groundcover mix is 44 per cent irrigated grass and 56 per cent native vegetation. This is a far smaller irrigated area than a typical park design of 80 per cent watered grass and 20 per cent mulch and tree cover.

Rethinking park design for longterm economic benefits

This effect was particularly pronounced for high-density housing where property value increased by up to $3,800 for each one per cent increase in nearby park area.

Small irrigated Low density Medium density High density

Small nonirrigated

Large irrigated

Large nonirrigated

0.0013%

-

-

-

-

-

0.0025%

-

0.004%

0.0088%

0.0072%

0.0035%

People want more trees and less irrigated grass

The average property price increased by up to $3,800 for each one per cent increase in area of nearby parks.

Claire used benefit-cost analysis to determine how much councils are likely to benefit (or lose) economically over a thirty-year timeframe, depending on which park design they invested in.

To assess the economics of different

The 60:40 native vegetation to grass ratio might be the sweet spot, as it was also the design preferred by survey respondents in the earlier study.

Park design and water use for the future “With water scarcity, urbanisation, and a shift towards high-density living, councils are beginning to rethink urban park design, exploring approaches that require less water,” Claire says.

“This research shows that a new approach to the way we design and irrigate public open spaces could benefit councils, the economy, the environment and communities.”

An ‘ideal’ park design incorporates 44 per cent irrigated grass and 56 per cent native vegetation.

designs, Claire calculated net-present values (NPV), a method that accounts for the fact that a dollar you get in the future is not worth as much as a dollar you have today because you could do something with it, like invest it. So, NPV helps you decide if a project is a good idea by showing whether it will make you more money in today's terms than it costs.

The study showed that over a thirtyyear period, the highest positive NPV for councils was provided by a park design incorporating 60 per cent native vegetation and 40 per cent irrigated grass, which gave a NPV of more than one million dollars. The analysis factored in the cost of establishing and maintaining grass and native vegetation as well as non-market benefits.

Acknowledgment. This article was based on Claire Doll’s New Water Ways seminar ‘The economics of public open spaces under water scarcity’. You can view the presentation here.

Information. For more information about Claire’s work, visit her website, EconClaire.

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NGIWA and GIA partner with DWER to champion waterwise practices in nurseries and tree farms in the Gnangara Region The background The Department of Water and Environmental Regulation (DWER) released the Gnangara groundwater allocation plan on 3 June 2022. This plan aims to manage water resources by: •

Maintaining or increasing groundwater levels to protect water quality and environmental health.

•

Reducing the rate of groundwaterlevel decline.

•

Ensuring a reliable water supply.

To achieve these objectives, annual groundwater abstraction must be reduced by 54 gigalitres (GL) over the next decade, which equates to a 19% reduction across the Gnangara system.

Most licensed users will see a 10% reduction from 2028, while public water supply will face a 27% reduction.

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The Overflow | Winter 2024

Exemptions for Nurseries and Tree Farms Established nurseries and tree farms are exempt from these reductions as these businesses will play an increasingly important role in providing plants and trees for waterwise gardens and landscaping, which will help keep Perth cool and green as we adjust to a drier climate.

These workshops included the development of video case studies showcasing the changes that participants were able to implement with their newly acquired knowledge.

This initiative underscores the importance of water management in sustaining Perth’s green spaces and highlights the proactive steps being taken by local nurseries and tree farms to ensure a sustainable water future.

This exemption is part of a commitment under the Waterwise Perth Action Plans to develop and adopt waterwise standards for efficient groundwater use in nurseries and tree farms.

Collaboration with NGIWA and GIA DWER recognizes NIASA (Nursery Industry Accreditation Scheme Australia) and EcoHort as best practice programs for efficient water use. In 2023-24, DWER sought assistance from the Nursery Industry Association of WA (NGIWA), in collaboration with the national body Greenlife Industries Australia (GIA), to promote these accreditations.

This initiative included raising awareness through joint messages and case studies, as well as building capacity through targeted workshops and training for nursery and tree farm licensees in the Gnangara plan area.

For more information, contact: Steve Blyth, Extension Officer (GIA) M: 0427 215 210 E: Steve.Blyth@greenlifeindustry.com.au

Workshops and Training Initiatives

Lisa Passmore, Executive Officer (NGIWA) E: lisa.passmore@ngiwa.com.au W: www.ngiwa.com.au

To date, NGIWA and GIA has facilitated two 2-day ‘Waterwork’ workshops providing high-level irrigation system and water management training, with more planned next financial year.

Video links: Sabine Suess video link Lydia Polglaze video link Workshops video link

The Overflow | Winter 2024

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The Winter Sprinkler Switch-off is here Switch off today and save water for when we need it most Winter Sprinkler Switch-off

Gator Radio Control Systems The Gator Radio Systems can be used for agricultural watering, landscape watering, sports fields, shopping malls, residential complexes as well as applications within the nursery industry.

The Gator Radio Receivers work above the ground on post mounts, or mounted in valve boxes, up to 2kms away. The Gator System can either be newly installed or retrofitted to any existing irrigation system and is ideal to re-generate old or decayed solenoid cabled systems.

Gator Budget Parallel Wireless Systems

Gator Point to Point Systems The Gator Budget Parallel Wireless Irrigation Control System converts the output signal of any conventional irrigation controller being either a 24VAC or DC pulse type output into a wireless signal that can be passed over the air to control and switch the various devices such as valves, pumps, filters etc. within an irrigation system. Up to 64 outputs can be automated with numerous receivers. The total valves that we can control is only limited to the hydraulics of your system.

The Gator Point to Point Wireless Irrigation Control System allows for the switching of up to 2 devices and can work as a one way signal or a bi-directional communication. For example, it is ideal for starting a remote pump unit on one output, then have the flow rate from the water meter being sent back to your controller as in input. This can also be used in both AC and DC, so with the addition of a battery pack at the tank, you could send a signal up to 2kms away to remote start a pump unit and then have it turn off once the tank is full.

For more information on Gator Radio Control systems please contact your nearest HR Products Office www.hrproducts.com.au

Gingin Evaluation Statement released Updates to Gingin’s water management arrangements are outlined in the Gingin groundwater and surface water allocation plans: 2024 evaluation statement, which was released by the Department of Water and Environmental Regulation in June 2024.

To strengthen the protection of Gingin’s water resources and to support local water users and the environment, restrictions have been placed on water licensing and trading in areas most impacted by climate change and water use.

The updated arrangements will assist in protecting Gingin’s highly valued stream and wetland areas that depend on groundwater, such as Gingin Brook, Lennard Brook and the Moore River estuary.

Along with the rest of south-west Western Australia, Gingin is facing challenges associated with climate change, such as the marked drying trend in rainfall since1970.

Average annual rainfall has dropped by nine per cent since the release of the Gingin surface water allocation plan in 2011. Summer streamflow in Gingin Brook, which provides water for irrigated agriculture and supports aquatic fauna communities, has declined by 34 per cent over the same period.

Climate projections for this area indicate rainfall will continue to decline into the future.

In the southern part of the Gingin groundwater area, aquifers that provide water for irrigated agriculture and support sensitive groundwaterdependent environments are in decline.

“Gingin is facing reduced rainfall due to climate change, which presents challenges to its connected groundwater and surface water resources – particularly in an area that is so important to the state’s horticultural production,” Senior Environmental Officer Adam Green said.

The Gingin groundwater and surface water plans: 2024 evaluation statement released in June is the first published evaluation of the 2015 Gingin groundwater allocation plan and second for the 2011 Gingin surface water allocation plan.

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As well as supporting agriculture, Gingin’s groundwater and surface water resources support aquatic systems that sustain diverse communities of flora and fauna, with the species richness of native fish and crayfish among the highest in south-west Western Australia.

The updated management arrangements in the evaluation statement will help prevent increases in abstraction in environmentally sensitive areas and are an important interim step while a new combined Gingin water allocation plan for surface water and groundwater is developed.

The new Gingin plan will include further consideration of the abstraction reductions proposed for parts of the area covered in the 2022 Gnangara groundwater allocation plan.

Figure 1. Groundwater levels in the Leederville Parmelia aquifer on the Dandaragan Plateau between the Gingin and Muchea townsites are showing long-term declines.

The new draft Gingin water allocation plan is expected to be released for public consultation in 2028, after updated groundwater modelling using the latest climate projections is completed.

“These systems are ecologically significant and highly valued by the Gingin community. It is important we get the balance right with what is taken out of these water resources as rainfall continues to decline.”

“This evaluation has highlighted the importance of adaptive management of groundwater and surface water resources with climate change. The updated management arrangements now in place will help ensure their sustainability for existing water users and the environment.”

The Gingin groundwater and surface water allocation plans: 2024 evaluation statement is underpinned by an extensive review of monitoring data to evaluate the performance of the 2011 Gingin surface water allocation plan and 2015 Gingin groundwater allocation plan. This included analysing 39 groundwater monitoring bores across five major aquifers and an additional 27 bores along Gingin Brook looking at groundwater-surface water interaction. The evaluation found ongoing risks to groundwater and surface water resources in the southern part of the region, where climate change and abstraction has led to long-term declines in groundwater levels and streamflow.

Gingin’s diverse aquatic systems sustain among the greatest variety of fish and crayfish species in the south-west of Western Australia and are highly valued by the community.

The Overflow | Winter 2024

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Government House: A testament to pristine water quality and innovation Back in 2011, Elliotts Filtration embarked on a mission to reinvigorate the lake water quality at Government House with the installation of genuine Elliott’s Filtration bore water iron filtration system. Thirteen years on, this innovative system continues to deliver exceptional performance, maintaining the lake’s pristine condition and enhancing the natural beauty of this historic site.

The filtration system was engineered to manage a flow rate of 4 litres per second while handling iron concentrations as high as 19 parts per million (ppm). Through cuttingedge technology and meticulous maintenance, the system consistently reduces iron levels to below 0.5 ppm, ensuring water clarity and quality that sets a benchmark in Western Australia.

Earlier this year, an aquatic biodiversity survey lauded the lake’s water quality at Government House as one of the best in the region, with its pristine condition serving as a model for other water bodies in metro WA.

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The Overflow | Winter 2024

Collaboration is key to the ongoing success of our projects. Elliotts Filtration works in close partnership with Western Irrigation, who oversee the bore operations, and dedicated on-site Government House personnel who are responsible for the lake's general

upkeep. Their efforts include removing rubbish from verges, managing overpopulated weed species and controlling surface algae. This approach ensures that every aspect of the lake's water quality remains environmentally friendly and free from harmful chemicals.

GIVING WATER A HELPING HAND www.elliottsfiltration.com.au

Perth Children’s Hospital OUR MISSION Elliotts Filtration ensure you receive the utmost value for your investment? Just CLICK HERE to access our Statement, outlining the most beneficial solutions tailored for our clients.”

Nestled below the Rainbow Bridge sits our iron filtration system.

With an iron contect of 13.0ppm at 6.0 litres a second. This filtration system was installed in 2016 and continues to keep the beautiful aesthetics of the colours vibrant.

At the heart of this success is the double 36-inch housing module system... designed and manufactured in Elliotts Filtration’s Greenwood warehouse.

Elliotts Filtration not only installs and maintains these systems but also fosters strong relationships with all stakeholders involved. This collaborative spirit ensures the longterm sustainability of the lake at Government House and serves as a blueprint for similar projects across the state.

A biodiversity survey was conducted for Government House which revealed a thriving aquatic ecosystem. Water life, including water birds, aquatic plants, algae, crustaceans, and frogs, continues to flourish, promising a sustainable and vibrant future for the lake. The success of the Elliotts Filtration system underscores the importance of advanced water treatment solutions in preserving natural habitats and promoting biodiversity.

The quote below, from the Survey: The water quality was pristine with no nutrients recorded in the water column, very low turbidity and high dissolved oxygen concentration. This is a benchmark reading for other urban lakes in the Perth metropolitan area.

(Herath, Heurck 2024)

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The Overflow | Winter 2024

At the heart of this success is the double 36-inch housing module system, a testament to local ingenuity and craftsmanship, designed and manufactured in Elliotts Filtration’s Greenwood warehouse. This robust and reliable system exemplifies the company’s commitment to quality and sustainability, ensuring that Western Australia’s most precious water resources are protected for future generations.

The journey of Elliotts Filtration at Government House is a powerful reminder of how innovative technology, combined with a dedicated service and maintenance team, can create and sustain a vibrant natural environment.

This ongoing success story is not just about keeping a lake clean—it's about setting new standards in water quality and environmental stewardship for the entire region.

For more about iron filtration and its benefits, Elliotts Filtration offers a wealth of information on their website at www.elliottsfiltration.com.au Visitors can also explore various other successful lake projects through their active presence on Facebook and Instagram, where they share insights and updates on their pioneering work in water filtration.

MEMBERSHIP BENEFITS CONFERENCE, TRADESHOW & EXPO DISCOUNTS

INVITATIONS TO REGIONAL EVENTS Irrigation Australia hosts a number of regional events and site visits across Australia. This is a great opportunity for members and industry colleagues to come together to discuss new challenges, technologies and network.

Receive member discounts on attending and exhibiting at the Irrigation Australia International Conference & Exhibition, as well as regional Expo’s.

TRAINING DISCOUNTS

ACCESS E-KNOWLEDGE

Receive significant member discounts on nationally accredited irrigation training and qualifications delivered by Irrigation Australia in city and regional areas and online virtually.

Irrigation Australia's e-knowledge repository has significant resources of technical papers, conference papers, publications such as The Irrigation Journal and The Overflow, and FAQ's available only for members.

CERTIFICATION DISCOUNTS Receive significant member discounts on the joining fee and renewal fee to the Certification Program administered by Irrigation Australia.

MEMBERS ONLY PORTAL

Certification is a national program of industry recognition. Certification adds instant credibility with customers, increases job opportunities, and demonstrates your commitment to efficient water management.

ADVERTISEMENT DISCOUNTS ON IRRGATION AUSTRALIA PUBLICATIONS

Gain access to the members only portal on the Irrigation Australia's website. Through the portal you can manage your Irrigation Australia membership, register your staff/employees for training, access members only documents, presentations, and other materials.

DISCOUNTS ON INDUSTRY PUBLICATIONS & MERCHANDISE

Receive significant discounts on advertising in the The Irrigation Journal and The Overflow.

These publications are distributed each quarter to all members and industry contacts.

Irrigation Australia offers a wide range of books, eBooks and other merchandise through its online store. Members receive significant discounts on materials.

DISCOUNTS ON WATERWISE ENDORSEMENT (WA Only) Receive significant member discounts on the Waterwise endorsement programs, relevant for domestic irrigation contractors, installers, landscapers and retailers.

Benefit from Waterwise marketing and merchandise to promote yourself as a Waterwise Irrigation Professional to the community.

MANAGE JOB OPPORTUNITIES

FREE LISTING ON IRRIGATION AUSTRALIA'S WEBSITE

Share your upcoming job vacancies with the Irrigation Australia community through our LinkedIn and Facebook platforms and our fortnightly e-news.

List your business on Irrigation Australia's Website Directory "Find an Irrigation Specialist” on the front page of our website. (Available to company memberships only)

Becoming a Member of Irrigation Australia

Join online by scanning the QR code or contact us at (07) 3517 4000 or email info@irrigation.org.au

Why choose natural turf over plastic alternatives?

Synthetic turf is a growing threat to the environment, human health and wellbeing.

This product is often falsely promoted as an environmentally friendly option and installed at alarming rates in schools, aged care facilities, public parks, sporting fields, suburban back yards and on verges.

We feel it is our obligation and duty of care to educate our communities about the hidden dangers, allowing them to make informed decisions.

Read on for some disturbing facts ...

Contact Turf Australia for more information. www.turfaustralia.com.au The Overflow | Winter 2024

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How much do you really k Some Frightening Synthetic Facts...

On average one roll of synthetic turf weighs between 145kg and 220kg (depending on the density of the weave), and it covers 73 square metres of surface area. The soil beneath becomes contaminated, dead earth.

One 220kg roll of synthetic turf equates to 39,820 single use plastic bags or 374,000 plastic drinking straws.

One square metre of plastic turf equates to 545 single use plastic bags or 5,123 plastic drinking straws.

Synthetic grass fibres are made from polypropylene (13.7%) and polyethylene (86.3%). These are petrochemical products and the most widely used plastics in the world.

Synthetic turf contains toxic, ‘forever chemicals’ dumped in landfill when replaced.

Synthetic turf has a lifespan on average of approximately 7-10 years before being replaced. This material cannot be recycled in Australia and inevitably ends up in landfill.

All synthetic turf contains toxic ‘forever chemicals’ that are released continually in the form of greenhouse gasses — this chemical emission occurs at a higher rate when exposed to a heat source (the sun). It is absorbed through the skin, inhaled, ingested, and can be absorbed through open wounds.

Internationally, the European Union, the UK and parts of the US have all taken steps toward banning synthetic turf and rubber crumb due to fears for its impact on the environment and human health.

1m

or

2

synthetic turf

545 5,123 single use plastic drinking straws

plastic bags

The Long Term Impact of Synthetic Micro Plastic Particles...

Synthetic turf and its infill deteriorate during its lifetime and breaks down into meso-, micro- and nano plastic particles. The impact of the spread of these small pieces of plastic (and rubber) into the environment is far reaching and well documented, including evidence of microplastic (originating from artificial grass blades) being present in rainfall.

Meso-, micro- and nano plastic particles are so common in the environment now, that it has infiltrated human diet. These tiny pieces of plastic are now found in human digestive systems, breastmilk and in the lungs and stomachs of foetuses.

FIFA 2017 estimates that each synthetic sport field typically loses an average of one to five tonnes of plastics into the environment every year.

Synthetic Infill and Environmental Damage...

The infill material most commonly installed under synthetic turf (to provide a more “natural” cushioned feeling underfoot) is ‘rubber crumb’ made from waste tyres. This contains a toxic cocktail of chemicals including heavy metals, zinc and arsenic.

A single artificial turf field utilises over 200,000 kilograms or 57,000 tyres for infill of which the health risks are still not completely known.

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The Overflow | Winter 2024

The European Union, UK and parts of US have taken steps toward banning synthetic turf due to the fears of the impact of rubber crumbs on the environment and human health.

Synthetic turf breaks down into meso-, microand nano plastic particles, now found in human digestive systems, breastmilk and in the lungs and stomachs of foetuses.

South West native design

know about synthetic turf?

Artificial grass and rubber infill have been found to contain as many as 16 PFAS compounds. This is a group of Persistent Bio-accumulative and Toxic manufactured chemicals (PBTs) used to make fluoropolymer coatings for the purpose of heat, oil-, grease-, stain- and water resistance. PFAS chemicals do not readily biodegrade (“forever chemicals”), are highly mobile, bio-accumulate in food chains, and are highly toxic to the environment.

In its most definitive regulatory action taken to date, the Australian Commonwealth has banned the import, use and manufacture of some of the more prominent types of PFAS (PFOS, PFOA and PFHxS) effective from 1 July 2025 — synthetic turf and rubber crumb infill, however, were not mentioned in this action.

CHOOSE NATURALLY GREEN SPACES OVER PLASTIC. For more information, visit www.turfaustralia.com.au for a full Resources Library dedicated to the topic of synthetic turf.

The NSW Chief Scientist and Engineer’s report states: “The total microplastic pollution generated from infill loss through waste disposal, surface drains, internal drains and into surrounding soil and grass was calculated between 18,000 tonnes and 72,000 tonnes per year.”

The material installed under synthetic turf is most commonly ‘rubber crumb’ made from waste tyres. This contains a toxic cocktail of chemicals including heavy metals, zinc and arsenic.

According to the NSW Chief Scientist & Engineers report 2022, the stormwater generated from synthetic fields may contain hundreds of kilograms of turf fibres lost each year. This contaminated stormwater may contain chemicals including Zinc and PAHs (Polycyclic aromatic hydrocarbon). The most common PAH is naphthalene which is found in mothballs.

PFAS chemicals leach into the ground causing contamination of the soil under and surrounding the plastic surface. This contamination affects waterways and all surrounding aquatic-, bird- and animal life.

Synthetic Infill and the Threat to Human Health...

Of 306 chemicals identified in rubber crumb, 197 met the theoretical criteria for cancer causing carcinogens and Endocrine Disruptor Chemicals (EDCs). Endocrine disruptors are chemicals that block or interfere with the body’s hormones, commonly causing fertility problems, endometriosis, early puberty, altered nervous system function and diabetes to name a few.

A Safety Data Sheet (SDS) is available for many potentially harmful chemicals and materials. It outlines chemical composition and identifies risk to human health. Hand sanitiser has an SDS — Synthetic turf does not.

In the United States, the ‘Agency for Toxic Substances and Disease Registry’ (ATSDR) states that PFAS have the potential to impact on human immune response, cause increases in cholesterol levels, cause changes to liver enzymes, increased the risk of pregnancy-induced hypertension and preeclampsia, small decreases in birth weight and an elevated risk of kidney and testicular cancers.

A Safety Data Sheet (SDS) is available for many potentially harmful chemicals and materials. It outlines chemical composition and identifies risk to human health. This document is aimed at informing those who work with or are in contact with potentially harmful materials about the associated risks and dangers, and provides the appropriate safety protocols to avoid.

Continued >

Of 306 chemicals identified in rubber crumb, 197 met the theoretical criteria for cancer causing carcinogens

The Overflow | Winter 2024

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The Synthetic Heat Impact...

Urban Heat Island Impacts (UHI)s: Synthetic turf radiates heat, affecting thermal comfort. This creates “urban heat islands”, making homes (and if there is collective use of synthetic turf) entire suburbs warmer. This combination of sensible heat flux and warmer air temperatures results in far higher energy consumption for cooling due to increased ambient temperatures.

When a natural turf field is replaced with synthetic turf, the land is essentially switched from cooling the surrounding atmosphere, to actively heating it.

‘When a natural turf field is replaced with synthetic turf, the land is essentially switched from cooling the surrounding atmosphere, to actively heating it.’

The NSW Chief Scientist and Engineer.

Studies conducted by the Natural Turf Alliance found a synthetic turf field in Sydney measured at 88oC when outside temperatures were only 28oC. Such extreme temperatures pose a serious health hazard, especially to young children. These temperatures can cause second and third degree burns and significantly increase children’s risk of serious heat-related illnesses.

In all studies conducted, synthetic turf fields, playgrounds and backyards are always found to be significantly hotter than concrete and asphalt.

(Image supplied: Sebastian Pfautsch)

WHY NATURAL TURF IS THE BEST CHOICE...

Cooling effect The temperature on a green lawn in summer can be 10oC less than bare soil, 20oC less than asphalt, concrete or pebbles and 40oC less than synthetic grass!

Reduces erosion Australian Standard 5181 details the use and installation of turf as an erosion, nutrient and sediment control measure.

Environmentally friendly Turf improves water quality by filtering runoff water and it reduces greenhouse gases by absorbing carbon dioxide and producing oxygen.

Promotes wellbeing Open greenspace promotes physical exercise, improves mental health and enhances the sense of community.

Uses less water than you think With many different turf types and varieties to choose from, drought tolerant and water efficient options are available. Natural turf grows well using recycled water and can be more water efficient by the best practice incorporation of soil amendments in sandy soils and compost in all soil types. Regular application of quality wetting agents and soil moisture retainers can save up to 50% water usage too.

Natural and adds value Turf self-replenishes, is biodegradeable, provides a natural fire barrier, reduces noise and can increase home values by up to 18%!

Cheaper than synthetic alternatives Compared to the total cost of synthetic sporting fields over 25 and 50 years, natural turf fields are cheaper to install and maintain in all sports, except tennis*.

A real world and infrared view of an area of synthetic turf on a 30-degree day.

(*Research conducted by the Department of Sport & Recreation, Government of WA)

CHOOSE NATURALLY GREEN SPACES OVER PLASTIC. For more information, visit www.turfaustralia.com.au for a full Resources Library dedicated to the topic of synthetic turf.

About Turf Australia Turf Australia is a Peak Industry Body representing 230 turf growers across Australia. We support and advocate for our industry and are committed to ensuring its success and prosperity now and for future generations.

Our industry brings to life naturally green spaces and as such the wellbeing of our environment forms the foundation for all we do — our aim is to ensure an ecologically sustainable future for our growers, their children and grandchildren.

The information contained in this document, is based on scientific facts and evidence-based findings by reputable scientists and environmental organisations.

NOTE FROM THE PUBLISHER: Irrigation Australia thanks Turf Australia for the contribution of this article and strongly supports its messages around the importance of natural over synthetic turf.

Irrigation Australia is aware that there are a range of published views on the public and environmental health impacts of PFAS. The Australian government has an information portal (pfas.gov.au) for readers with an interest in finding out more.

04.06.2024 © Turf Australia

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Water Update Water Usage Metro Region https://www.watercorporation.com.au/Our-water/ Rainfall-and-dams/Water-use

Yearly Streamflow https://www.watercorporation.com.au/Our-water/ Rainfall-and-dams/Streamflow

Perth Rainfall Comparison https://www.watercorporation.com.au/Our-water/ Rainfall-and-dams/Rainfall

Supplied by the Water Corporation Current graphs can be found at www.watercorporation.com.au

HAVE YOU VISITED THE WATERWISE PROGRAMS WEBSITE? The Waterwise Garden Irrigator Program is a joint initiative of the WA Region of Irrigation Australia and Water Corporation, with a goal of optimising water-use efficiency of domestic irrigation systems in Western Australia. Endorsed Waterwise Garden Irrigators are fully trained in water efficient practices and can design, install, repair and maintain home garden irrigation systems.

WATERWISE GARDEN IRRIGATORS AAA Irrigation

Chris's Landscaping

Growing Assets

Adam's Retic

Civic Reticulation

Handy Fixers Property Maintenance

Adonis Gardening & Irrigation

Clackline Reticulation

HomeCare Reticulation

Advantage Bores & Reticulation Services

Coast to Coast Irrigation

Instant Gardens

Cockburn Property Maintenance

Joel Irrigation & Landscaping

Country Landscaping & Irrigation

Josh's Lawn & Garden Service

Crystal Waters Irrigation

Kinetic Landscaping

CS Reticulation

KRH Irrigation

CT Irrigation

Landscape Elements Pty Ltd

Daetech Australia Pty Ltd

LD TOTAL

Alessio’s Gardens All Round Retic and Landscaping Allwest Bores & Reticulation Aqueduct Irrigation Services AR Landscapes Backyard Creations Beyond Reticulation Bowie Developments Bowie Irrigation Bradkaz Irrigation Brighton Reticulation Brookwell Irrigation Bruce Landscapes Candid Reticulation Services Canning Irrigation Services CHATT Services Chris Simpson

Daryn's Garden solutions

The Overflow | Winter 2024

Landscape Australia Construction

Donewell Contracting

Living Eden Property Maintenance

Dynamic Property Solutions

Matty P's Lawn & Trees

Earlybird Landscaping

Matt Duncan Reticulation & Landscaping

Earth & Water Pty Ltd Fastlane Maintenance First Element Irrigation Garden Solutions Gracie Reticulation Services Green Oasis Lawn and Reticulation Greenfields Reticulation Greenworx

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NEW

Midwest Turf Supplies Mr Retic Multihire New Season Landscapes New Season Landscapes Newground Water Services Northend Reticulation & Turf

www.waterwiseprograms.com.au

Nutrien Water

Retic Mate

Triton Electrical Contractors

Oasis Reticulation

Retic Repair Man

Tropical Reticulation & Landscape

One Two Tree Irrigation & Landscaping

Retic Smart

Turfed Out

Retic, Turf & Soakwells Pty Ltd

Ultimate Blue Pty Ltd

Reticulation Pro

Under Pressure Retic

Peel Scape Solutions

ReticWest

Urban Reticulation

Perdita Reticulation & Garden Solutions

Rob’s Retic and Lawn

VIP Home Services

Perth Lawns and Retic

Rockingham Mobile Mowing

Wanda’s Gardening & Landscaping

Perth Retic Repair

Ryan Daly

Water Well Reticulation

Perth Reticulation Experts

Sharp Yards

Waterwise Landscaping

Plantech Grounds Maintenance

SK Retic

Westcoast Reticulation Services

Portworks

Sodexo

Wet Frog Retic

Softscapes & Reticulation Pty Ltd

WF Landscape Industries Pty Ltd

Sprinkler Fixers

Wittens Irrigation & Design

Summer Retic

Yurra Pty Ltd

OZ Commercial Maintenance Services

Preferred Group

NEW

Premier Turf Care and Property Maintenance PTC Irrigation Pumps N Pipes Supplies Purely Irrigation Quinns Rocks Reticulation Rain Maker Irrigation Services Rapid Reticulation Remedies Regenerative Gardens & Reticulation Renoscape Repair Your Retic Retic Express Retic Man

Superior Landscaping & Reticulation The Retic & Landscape Shop The Retic Guy The Watershed Water Systems Midland The Watershed Water Systems Subiaco Think Water Capes Region Think Water Geraldton Think Water Perth Tidy Gardens Australia TLC Services Perth

The Overflow | Winter 2024

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The website features an extensive and up-to-date business With an increasing numberwhere of DIYthe enthusiasts installing and maintaining their own directory community can search for their local irrigation systems, the Waterwise Irrigation Design Shop Program was developed Waterwise members, based on their location. Head to the searchto raise the standard of irrigation advice and design services offered by staff at counter directory at www.waterwiseprograms.com.au for members’ level of specialist irrigation retailers. Endorsed staff have the knowledge and skills to contact details, or if you’d like information on how to become an provide their customers with waterwise advice, products and services. endorsed Waterwise business.

Several Waterwise Garden Irrigators and Design Shops were randomly selected for audit in the 2022/23 period. Successfully audited businesses are acknowledged with this customised logo.

In recognition of their unwavering dedication to water conservation, we proudly commend our esteemed Waterwise Garden Irrigators for their steadfast participation in the program for over a decade.

WATERWISE IRRIGATION DESIGN SHOPS Canning Irrigation Services

Nutrien Water - Neerabup

Controlled Irrigation Supplies

Nutrien Water - Osborne Park

Joel Irrigation & LHP Landscaping

Nutrien Water - Rockingham

Nutrien Water - Canning Vale

Peel H20 Solutions - Mandurah

Nutrien Water - Forrestdale

Pumps ‘n Pipes - Mandurah

Nutrien Water - Greenwood

The Retic & Landscape Shop - Southern River

Nutrien Water - Joondalup Nutrien Water - Malaga Nutrien Water - Mandurah Nutrien Water - Midvale Nutrien Water - Myaree

The Watershed Water Systems Cockburn The Watershed Water Systems Midland The Watershed Water Systems - Morley

The Watershed Water Systems Subiaco Think Water - Broome Think Water - Capes Region Think Water - Geraldton Think Water - Perth Think Water - Wanneroo WA Reticulation Supplies - Armadale WA Reticulation Supplies - Midland WA Reticulation Supplies - Rockingham Western Irrigation - Greenwood

SOUTH WEST WATERWISE PROGRAMS Irrigation Australia has recently launched the Waterwise Irrigation Programs in the South West region of WA, with the support of local water utilities; Busselton Water and Aqwest.

WATERWISE IRRIGATION DESIGN SHOPS Country Water Solutions – Bunbury Nutrien Water – Bunbury Nutrien Water – Busselton Think Water - Capes Region (Busselton)

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The Overflow | Winter 2024

WATERWISE GARDEN IRRIGATORS ARB Landscaping & Fencing

LD TOTAL

Country Landscaping & Irrigation

Nutrien Water - Busselton

Country Water Solutions

Summer Retic

Fastlane Maintenance Fergies Total Lawn Care