11 presentation waterlosses workshop cmi

WORKSHOP Non-­‐Revenue Water (NRW) Reduc2on in Urban Water U2li2es Experiences and Challenges in the Mediterranean Region Center for Mediterranean Integra2on, Marseille, France January 22-­‐23, 2013

Non-­‐Revenue Water Management in Cyprus Bambos Charalambous

Head Technical Services Water Board of Lemesos Lemesos, Cyprus (unCl October 2012) Managing Director Hydrocontrol Ltd Lemesos, Cyprus

Water Management in Cyprus January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Recent Water SituaCon in Cyprus  Gradual change in the climate  Substantial decrease in annual rainfall >20%  Reduction in the runoff into the reservoirs > 40%  Periods of low rainfall are becoming more frequent  Demand is continuously increasing  Frequent periods of low or no rainfall :1991-92,1997-2000, 2008-09  Government forced to apply water restriction measures o Drastic water cuts in irrigation o

Severe restrictions to domestic water supply

 Add Water to the National Balance: o Construction of Desalination plants: 60Mm3 (75% of total potable needs) o Use of treated effluent in agriculture: 10Mm3 (5% of total irrigation needs)

 Need for water conservation and leakage management January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Lifeline from Athens to Lemesos in August 2008:

35.000 m3/day

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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NRW Management  Is a conCnuous acCvity  Is an integral part of distribuCon network management  Is based on a long term strategy  Is cost effecCve especially in water scarce areas HOWEVER ITS SUCCESS DEPENDS:  On commitment and dedicaCon at all levels  AdopCon of appropriate methodologies and technologies  Use of appropriate and reliable indicators for benchmarking, such as : litres/service connecCon /day and ILI January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Key Performance Indicators Water Board of Nicosia YEAR

% of SIV

ILI

Lit/conn/day

2007

19.5

2.9

137

2011

23.0

4.3

203

Water Board of Larnaca YEAR

% of SIV

ILI

Lit/conn/day

2007

23.0

2.5

131

2011

27.6

3.3

168

Water Board of Lemesos

January 22-­‐23, 2013

YEAR

% of SIV

ILI

Lit/conn/day

2007

16.7

1.8

91

2011

23.0

2.8

143

Center for Mediterranean Integra2on Marseille, France

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Network Design and Development January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Major Network Developments Water Board of Lemesos

 1986 - 1990 • Major expansion of storage and supply network • Establishment of pressure zones and DMA • Installation of SCADA system

 1991 -1993 • Pressure reduction study • Installation of PRVs in 8 out of 27 DMAs

 1994 - 1995 • Digitization of all maps of the water distribution system

 1997 - 1998 • Review of the leakage control activities by external consultant • Recommendations for the establishment of a leakage management policy

 1999 - to date • DMA re-design and pressure management • Use of advanced technology in DMA monitoring and leak detection • Adoption of IWA WLTF “best practice” approach to NRW management Source: WBL January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Key ConsideraCons

DMA categories Small

: <1000 properties

Medium : 1000 – 3000 properties Large

: 3000 – 5000 properties

Factors considered in DMA design  Minimum variation in ground level  Single entry point into the DMA  Well defined DMA boundaries  Area meters correctly sized and located  Apply pressure management  Continuous monitoring January 22-­‐23, 2013

Source: WBL

Center for Mediterranean Integra2on Marseille, France

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Typical DMA Inlet Chamber

Source: WBL January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Monitoring and Data Transfer Dedicated Computer in Control Room

Data Communication  E-mails / sms sent from each DMA  Alarms sent to Operator’s mobile

phone for: o o o o

High/Low pressure High MNF No flow Low battery status

WWW

PSTN and GSM Network

PROGRAMMABLE CONTROLLERS IN DMAs January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Pressure Management

Reduction in: 

surges and excess pressures



burst rates and background leakage, cut repair costs



flow rates of all leaks



some components of consumption

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Pipeline and Asset Management  High quality materials / Proper installaCon  High standard of maintenance  Pipeline replacement using a decision support system

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Accurate and Comprehensive Metering the first step in establishing how much water is produced and/or being used

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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NRW AcCviCes

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Annual Water Balance (m ) (“Top -­‐ Down”) 3

Reaching the point of Accountability

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Commercial Losses ( Apparent losses)

All customers are metered Water theft

Commercial Losses = Loss of Revenue

o Theft from hydrants o Meter by-passes o Tampering with meters

(valued at retail billing rates)

Meter under- registration o o o

Improve meter accuracy Volumetric meters Certified meter test bench

Meter reading errors o o o

Hand-held devices Change meter readers’ routes Check zero/low consumption

Accounting errors o o

Billing software Threshold alarms

January 22-­‐23, 2013

Source: Rizzo and Cilia, 2005

Center for Mediterranean Integra2on Marseille, France

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Physical Losses (Real Losses)

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Speed and Quality of Repairs Number of Pipes Repaired

712 (34%)

January 22-­‐23, 2013

1.169 (55%)

Response Repair Time

Next day (13.5%)

Next two days (1.5%)

Same day (85%)

Center for Mediterranean Integra2on Marseille, France

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AcCve Leakage Control

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Pressure Management AZNP (m)

DMA

Actual MNF (m³/hr)

(Sector 2)

Background losses(m³/hr)

Locatable losses (m³/hr)

before

after

before

after

before

after

before

after

220

64

32

3,92

2,16

0,63

0,24

1,88

0,51

221

63

36

5,69

3,85

3,39

1,65

0,16

0,07

222

54

28

3,07

2,24

1,53

0,71

0,05

0,03

223

53

29

3,58

2,56

1,70

0,82

0,35

0,20

224

53

29

5,50

2,52

1,68

0,82

2,23

0,11

225

64

34

12,96

9,78

5,42

2,41

4,16

3,99

226

64

34

10,04

6,84

5,62

2,55

0,37

0,24

227

59

38

15,52

10,44

5,91

3,38

5,11

2,56

228

43

39

7,60

7,20

3,42

3,03

0,51

0,50

LEAKAGE REDUCTION

30 m3/hr

Annual water saving = 220 000 m3 or € 170 000 229

41

36

4,06

3,73

1,13

0,96

2,01

1,85

230

47

40

21,80

18,00

5,57

4,60

9,37

6,54

231

52

42

11,01

7,92

4,63

3,54

2,17

0,18

232

39

32

5,17

4,32

1,32

1,05

2,21

1,63

233

42

33

4,45

3,96

1,48

1,10

1,48

1,37

234

48

38

3,55

2,44

0,32

0,23

2,26

1,24

Total before Total after

January 22-­‐23, 2013

117,92

43,75 87,96

Center for Mediterranean Integra2on Marseille, France

34,32 27,09

21,02

21

Reduced Burst Frequency ( Reported Leaks)

Description

Number of bursts reported (7 months)

After

Reduction of leaks

(7 months)

Distribution mains

49

27

45%

Communication pipes

296

178

40%

Before

ANNUAL COST SAVING Comparison of Results IN PIPE BURST REPAIRS €100 000 Location

Cyprus (Water Board of Lemesos)

Australia (A.Lambert)

January 22-­‐23, 2013

Pressure Reduction

Overall reduction in burst incidents

32%

41%

40%

55%

Center for Mediterranean Integra2on Marseille, France

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Leakage Monitoring

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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DMA Flow and Pressure Monitoring

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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MNF Analysis

PRIORITISE LEAKAGE ACTIVITIES BASED ON ESPB AND ON VALUE OF WATER SAVED January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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MNF Monitoring

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Leak LocaCon and Repair Awareness (A)=2days Location (L)=8days Repair (R)=1day

Loss of water=4200m3

A

L

Crack 7 mm wide on DN150mm AC pipe

R

Awareness (A)=2days Location (L)=28days Repair (R)=2days Loss of water=7200 m3

A

L

R

Three leaks were located and fixed.

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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TargeCng and Benchmarking

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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TargeCng and Benchmarking Goal Sefng

• IdenCfied areas to be improved • PrioriCsed most effecCve acCons

Benchmarking (Process and Metric) • Decided on Key Performance Indicators • Checked and compared performance to other uCliCes January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Non – Revenue Water Financial PI basic (IWA Level 1, Fi 36)

Drought Years Intermittent Supply

Source: WBL

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Litres / service connecCon / day OperaConal PI for Real Losses basic ( IWA Level 3, Op 24 )

Technical Performance Category: (Developed Countries)

A

– pressurised system : average pressure 40 m : <100 litres/connection/day Source: Liemberger,2005

Drought Years Intermittent Supply

Source: WBL

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Infrastructure Leakage Index Operational PI for Real Losses Detailed (IWA Level 3, Op 25) Technical Performance Category:

A (ILI 1-2: Excellent – no specific intervention required)

(Developed Countries)

Source: Liemberger, 2005

Drought Years Intermittent Supply

Source: W2BL January 22-­‐23, 013

Center for Mediterranean Integra2on Marseille, France

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Source: Seago, McKenzie, Liemberger, Halifax 2005 Total of 146 data from 31 countries

DEVELOPED COUNTRIES

I L I

DEVELOPING COUNTRIES

Cyprus

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Intermiient Water Supply

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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20 DMAs: 373Km: 45%total Number of reported breaks Description Mains

2007

2010

%increase

1/7,14km

1/2,38km

300

Service 15,5/1000 29,7/1000 connections connections connections January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

200

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Effects of Intermiient Supply Significant increase in Total Leakage

TOP DOWN

BOTTOM UP

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Effects of Intermiient Supply System Input Volume Vs ConsumpCon

Year

System Input Volume (m3)

Customer Consumption (m3)

Total

Difference

Total

Difference

2007

12.914.576

0

10.762.043

0

2008

10.655.626

-­2.258.950

9.776.466

-­985.577

2009

11.735.230

-­1.179.346

9.803.206

-­958.837

2010

14.568.052

1.653.476

10.634.710

-­127.333

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Effects of Intermiient Supply System Input Volume Vs ConsumpCon Year 2007

Before IntermiSent Supply

2008

IntermiSent Supply

2009

IntermiSent Supply

2010

AXer IntermiSent Supply

January 22-­‐23, 2013

System Input Volume

Customer ConsumpCon

0%

0%

(base line)

(base line)

-­‐17,5%

-­‐9,2%

-­‐9,1%

-­‐8,9%

+12,8%

-­‐1,2%

Center for Mediterranean Integra2on Marseille, France

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Cost of Intermiient Supply Cost to the Water Board of Lemesos for the 2 years (2008 – 2009) of Intermittent Supply: Loss of revenue: o Reduction in sales – cost of water saved: € 300.000 Additional operational expenses: o Staff overtime for opening / closing valves: € 365.000 o Repairing additional reported breaks: € 325.000

Additional cost after Continuous Supply was established: o Additional leakage (2010 – 2012): € 1.700.000 o Estimated cost of locating leaks: € 175.000 o Estimated cost of repairing leaks: € 125.000 January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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Thank you

Bambos Charalambous Tel.:+35799612109 Email: bcharalambous@cytanet.com.cy hydrocontrol@cytanet.com.cy

January 22-­‐23, 2013

Center for Mediterranean Integra2on Marseille, France

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