Case Study No. 7- Contingency Plan of Manila Water

Case Study No. 7-Contingency Plan of Manila Water Calupad | Olaes | Valiente

CE 428C-Water Resources Engineering

Water Resources Engineering Presentors:

Jason Calupad | Julian Olaes | ClarenceValiente

Presented to: Dr. Tomas U. Ganiron, Jr

OVERVIEW ✓ Usage of Water in Manila

✓ Issues and Challenges ✓ Resolutions ✓ References

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Usage of Water in Manila

✓ One

of the service obligations of Manila Water is to provide potable drinking water to its customers in the East Zone concession area.

✓ Manila Water obtains 97 percent of its raw water from rivers, streams and lakes, which represent high quality sources of surface water. Given its heavy reliance on surface water, protecting the watersheds that feed into the rivers and reservoirs is essential to its operations.

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Issues and Challenges

Water Crisis

Climate Change

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Waste Water

Resolutions Water Crisis | Climate Change | Waste Water

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Water Crisis ✓ Operating and sustaining its functions had become a concern for both the MWSS and the national government. Poor service performance and poor financial performance were the two most salient problems. The MWSS was severely challenged in delivering on its mandate: the highest standard of service to its GROWING NUMBER of customers.

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Metro Manila population with access to water, 2015

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2015

POPULATIONS (MILLIONS)

COVERAGE (%)

WATER AVAILABILITY (HOURS PER DAY)

MANILA WATER

11.0

67%

AVE. OF 16

2,700 Average Mega liters per day by the MWSS

7 MILLION People/users

63% Water loss due to leakage 10

Resolution ✓ MWSS will be more focused on Developing not only in laying out pipelines or putting up more infrastructure to improve, it also had to invest in the people that would awaken the “soul” of the Manila Water.

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Climate Change ✓ In a statement, the company said it would implement

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operation adjustments to better manage its water supply during the El Niño months. It said the dry spell is threatening water levels at La Mesa Dam at a time when water demand is steadily rising because of population increase and rapid economic growth. ✓ The situation hit its tipping point when a severe drought – the El Niño phenomenon – seriously affected the country. The unusually prolonged dry season left majority of the residents without water supply for a long time

El NiĂąo Contingency Plan

Place your screenshot here

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Resolution ✓ In light of PAGASA’s recent El Niño advisory and its threat to Metro Manila’s domestic water supply, Manila Water will be implementing operational adjustments that may affect water service across the entire East Zone. This is to help arrest the rapid decline of the water level at La Mesa Dam, due to limited inflows from rainfall. ✓ “We encourage everyone to treat water as the valuable resource that it is by using it wisely,” 14

Tips: ✓ Always make sure that

✓ When bathing, use a pail

taps/faucets are tightly closed.

and dipper instead of the shower.

✓ Regularly check leaks and have it repaired immediately.

✓ Recycle water. For example, collect water used to wash dishes and reuse for flushing the toilet.

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✓ Turn off tap while washing, shaving or brushing teeth. Use a glass of water for gargling.

✓ When washing the car, use a pail not a water hose, and a cotton rag instead of a sponge.

Waste Water ✓ Wastewater is a general term that includes all "used water" discharged by households, commercial and industrial establishments. ✓ Manila Water’s steadfast commitment to protect the environment is evident in the magnitude and scale of the company’s efforts to ensure that domestic wastewater from households does not contribute to the pollution of rivers and other water bodies.

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Resolution ✓ Manila Water’s wastewater treatment plants employ various technologies to treat wastes and pollution.

Through a variety of mechanisms and processes, these treatment plants produce treated wastewater safe enough for re-use or discharge to receiving bodies of water.

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TREATMENT PROCESS:

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Screening

Equalization

Primary Sedimentation

Wastewater passes through the mechanical screens to remove sand, grit and debris. Raw sewage is then lifted by pumps into the head of the treatment process.

Flow rate is controlled to prevent huge variations in volume, concentration and temperature.

Large sediments are allowed to settle to separate clarified water. Wastewater then flows into tanks equipped with aerators and blowers.

Aeration

Disinfection

Secondary Sedimentation

The blowers supply oxygen to the tank to sustain the bacteria responsible for decomposition of pollutants.

Harmful microorganisms are removed by the addition of sodium hypochlorite. Treated wastewater, or effluent, then flows by gravity to the nearest water body.

Biological "flocs" are allowed to settle to separate clarified water.

References:

✓ https://www.gwp.org/globalassets/global/toolbox/casestudies/asia-and-caucasus/cs_450_tap_-manila.pdf ✓ https://www.bworldonline.com/manila-water-preparescontingency-plan/ ✓ https://www.manilawater.com/customer/agos/2019-0304/service-advisory--2019-el-ni-o-water-supply-contingencyplan

✓ https://www.manilawater.com/customer/services/water-andused-water-facilities

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THANKS! Any questions?

You can find us at ✓ jason.calupad@yahoo.com ✓ olaesjulian@gmail.com ✓ cevaliente@icloud.com

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