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Angat, 4 other dams water level drops
By J.Lo
"We expect rains in watersheds to help recharge dams," Metropolitan Waterworks and Sewerage System division manager engineer Patrick Dizon said water levels of Angat and four other dams started to drop again after days of improvement, according to latest monitoring of Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
PAGASA said as of 6 in the morning, water level of Angat Dam dropped by 22 centimeters after it recorded 180.74 meters compared to its previous level of 180.96 meters.
Current water level of Angat Dam is still within its minimum operating level of 180 meters.
Sevillo David Jr., executive director of National Water Resources Board, said when water elevation of Angat Dam falls below 180-meter level, its water allocation will solely be dedicated to potable water needs of Metro Manila residents.
Maynilad has announced indefinite suspension of water interruption with improvement in levels of both Angat Dam and Ipo Dam following rains brought by Tropical Storm Dodong and southwest monsoon.
Angat Dam supplies more than 90 percent of Metro Manila's potable water needs and provides for irrigation needs of 25,000 hectares of farmlands in Bulacan and Pampanga.
PAGASA said aside from Angat Dam, water level of Ipo Dam in Bulacan also dropped by 0.18 meters after it recorded 99.62 meters compared to its previous level of 99.80 meters; La Mesa Dam in Quezon City dropped by 0.02 meters after it reached 79.15 meters compared to 79.16 meters; Ambuklao Dam in Benguet decreased by 0.90 meters after it reached 740.49 meters compared to its previous level of 741.39 meters and Caliraya Dam in Laguna declined by 0.33 meters after it reached 286.05 meters compared to its previous level of 286.38 meters.
Dizon said based on forecast of PAGASA, water levels of Angat and other dams will improve until September with expected rains during these months.
New dam for irrigation purposes was approved to be built at Bayabas River System in Doña Remedios Trinidad town, and is expected to prolong Angat Dam's water supply to Metro Manila.
National Irrigation Administration Central Luzon office recently informed Bulacan officials detailed engineering design, plans and drawings of dam have been approved and are ready for bidding, Ma. Gloria Carillo, provincial agriculturist of Bulacan, told media.
Upon completion, Bayabas Dam will lessen irrigation water allocation coming from Angat Dam to ricelands in Bulacan and parts of Pampanga during summer months, thus providing Metro Manila with additional volume for its potable water requirements.
Razon-led Manila Water Co. Inc. is spending P7.84 billion to construct new water treatment plant (WTP) in Laguna, which will provide additional supply of potable water to east zone concession area.
Located in Pakil, Laguna, P7.84 billion East Bay Phase 2 WTP is expected to deliver new 200 million liters per day (MLD) of potable water to two million people in Pasig, Pateros, Taguig, and nearby towns in early 2025.
Manila Water senior project manager Byder Nangit said project is part of company's Water Supply Master Plan aims to ensure water security and supply reliability in east zone.
Nangit said once completed, project would also lessen Manila Water's water supply dependence on Angat Dam.
WTP is part of East Bay Phase 2 Water Supply System (WSS) Project, which also includes construction of reservoir, pumping station, and pipelaying of 60 kilometers of 1200- and 1400-millimeter diameter pipes.
WTP will treat water from Laguna Lake using reverse osmosis process, making it suitable for public consumption.
Earlier, Manila Water awarded design and construction contract to consortium composed of Spanish infrastructure firm Acciona, Prime Metro BMD Corp. and Santa Clara International.
Consortium also bagged contract to operate and maintain project for one year.
Meanwhile, Manila Water said Phase 1 of East Bay WSS Project started serving customers of Municipality of Jalajala in second quarter of this year.
Facility is expected to provide 50 MLD of treated water to 390,000 population in towns of Jalajala, Pililla, Baras, Cardona, Morong, and Binangonan in Rizal province, complemented by two submarine pipes traversing bottom of Laguna Lake.
Earlier, water company said components of P2.7-billion WTP project include eight-million-liter capacity reservoir, intake structure, pumping station, and WTP using dissolved air flotation (DAF) system, multi-media and granular activated carbon (GAC) filters as well as reverse osmosis system.
East Bay Water Supply System Project seeks to expand Manila Water's services to more towns in Rizal Province.
Currently, Manila Water serves east zone of Greater Manila Area, covering parts of Makati, Mandaluyong, Pasig, Pateros, San Juan, Taguig, Marikina, most parts of Quezon City, portions of Manila, as well as several towns in Rizal.
It also operates outside east zone through subsidiary Manila Water Philippine Ventures Inc. (MWPV), with presence in Laguna; Boracay; Cebu; Davao; Clark, Pampanga; Ilagan, Isabela; Tagum, Davao del Norte.
Abroad, Manila Water is present in Vietnam, Thailand, Indonesia and Saudi Arabia.
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