Case Study No. 7- Contingency Plan of Manila Water

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

2. CE 428C-Water Resources Engineering
Water Resources Engineering
Presentors:
Jason Calupad | Julian Olaes | ClarenceValiente
Presented to: Dr. Tomas U. Ganiron, Jr

3. OVERVIEW
✓ Usage of Water in Manila
✓ Issues and Challenges
✓ Resolutions
✓ References
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4. Usage of Water in Manila

5. ✓ 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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6. Issues and Challenges
Water
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Crisis
Climate
Change
Waste
Water

7. Resolutions
Water Crisis | Climate Change | WasteWater
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8. Water Crisis
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✓ 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.

9. Metro Manila population with access to water, 2015
2015
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POPULATIONS
(MILLIONS)
COVERAGE (%)
WATER AVAILABILITY
(HOURS PER DAY)
MANILA WATER 11.0 67% AVE. OF 16

10. 2,700
Average Mega liters per day by the MWSS
63%
Water loss due to leakage
7 MILLION
People/users
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11. Resolution
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✓ 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.

12. Climate Change
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✓ In a statement,the company said it would implement
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 steadilyrisingbecause of
populationincrease and rapid economic growth.
✓ The situation hit its tipping point when a severe
drought – the El Niño phenomenon – seriously
affected the country. The unusuallyprolonged dry
season left majority of the residents without water
supply for a long time

13. Place your screenshot here
El Niño
Contingency Plan
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14. Resolution
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✓ 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,”

15. ✓ Always make sure that
taps/faucets are tightly
closed.
✓ 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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Tips:
shower.
✓ When bathing, use a pail
and dipper instead of the
✓ 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.

16. Waste Water
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✓ Wastewateris a general term that includesall "used
water" discharged by households, commercial and
industrial establishments.
✓ Manila Water’s steadfast commitmentto 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.

17. Resolution
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✓ 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 dischargeto
receiving bodies ofwater.

18. TREATMENT PROCESS:
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Screening
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.
Equalization
Flow rate is controlled to
prevent huge variations in
volume, concentration and
temperature.
Primary Sedimentation
Large sediments are allowed to
settle to separate clarified
water. Wastewater then flows
into tanks equipped with
aerators and blowers.
Aeration
The blowers supply oxygen to
the tank to sustain the bacteria
responsible for decomposition
of pollutants.
Disinfection
Harmful microorganisms are
removed by the addition of
sodium hypochlorite. Treated
wastewater, or effluent, then
flows by gravity to the nearest
water body.
Secondary Sedimentation
Biological "flocs" are allowed
to settle to separate clarified
water.

19. References:
✓ https://www.gwp.org/globalassets/global/toolbox/case-
studies/asia-and-caucasus/cs_450_tap_-manila.pdf
✓ https://www.bworldonline.com/manila-water-prepares-
contingency-plan/
✓ https://www.manilawater.com/customer/agos/2019-03-
04/service-advisory--2019-el-ni-o-water-supply-contingency-
plan
✓ https://www.manilawater.com/customer/services/water-and-
used-water-facilities
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20. THANKS!
Any questions?
You can find us at
✓ jason.calupad@yahoo.com
✓ olaesjulian@gmail.com
✓ cevaliente@icloud.com
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