Metro Manila Water Distribution System
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The Philippines’ main sources of water are rivers, lakes, river basins, and groundwater reservoirs. The longest and largest river, Cagayan River, discharges approximately 53, 943 million cubic meters of water annually. Its groundwater reserves are 47, 895 million cubic meters replenished by rainfall and seepage from rivers and lakes. The lakes are utilized mainly for fish cultivation. The four major groundwater reservoirs are in Cagayan, Central Luzon, Agusan, and Cotabato. There are 438 major dams and 423 smaller dams.
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Metro Manila Water Distribution System
- 1. Metro Manila Water Distribution System ADAMSON UNIVERSITY CIVIL ENGINEERING Presented by: Basco, Michelle Anne A. Dela Peña, Zaira Jhoy T. Dulay, John Christian S. Gomez, Reinheart James H. Villanueva, Louise Angela O Presented to: Dr. Tomas Ucol Ganiron Jr.
- 2. 2 The main source of Metro Manila’s water supply are: •Angat Dam •Ipo Dam •La Mesa Dam The water from these dams are then processed by the La Mesa and Balara Treatment Plants, which converts it from a raw state to clean and potable water. ADAMSON UNIVERSITY CIVIL ENGINEERING
- 3. 3 SERVICE AREA The MWSS service area is divided into two operating zones: the East Zone, managed by the Manila Water Company Inc. (MWCI) and the West Zone, which Maynilad operates ADAMSON UNIVERSITY CIVIL ENGINEERING
- 4. 4 • Maynilad is the private concessionaire that was awarded the exclusive right to take over from the Metropolitan Waterworks and Sewerage System (MWSS) • It handles the water supply and sewerage operations in the West Zone of Metro Manila. • The West Zone comprises 60% of the MWSS service population FEATURES MAYNILAD ADAMSON UNIVERSITY CIVIL ENGINEERING
- 5. 5 Where does Metro Manila draws water? o Umiray-Angat-Ipo system in Norzagaray, Bulacan and Laguna Lake WATER SOURCE ANGAT DAM The heart of the system. Which is a multi-purpose dam and is intended for power, irrigation and water supply. The Angat multi-purpose dam located in Norzagaray, Bulacan has a capacity of 850 MCM with an operating level of 181 – 214M and a low level outlet (LLO) at 101 m. ADAMSON UNIVERSITY CIVIL ENGINEERING
- 6. 6 Angat watershed area, which is in the Northern tip of the Sierra Madre Mountain ranges, has an area of about 62,000 hectares. An additional 9 cubic meters per second (CMS) from the Umiray trans- basin tunnel flows to Angat daily from the Umiray River. ANGAT WATERSHED LAGUNA LAKE The Laguna Lake was identified in 2009 as an alternate water source to Angat Dam. And in 2010, a state-of the-art treatment plant was built in Barangay Putatan, Muntinlupa to make sure that water drawn from the lake is fit for domestic consumption. ADAMSON UNIVERSITY CIVIL ENGINEERING
- 7. 7 Angat Dam • Angat Hydro Power Corporation (AHC) Umiray Watershed • Department of Environment and Natural Resources (DENR) Angat Watershed • National Power Corporation (NPC) Ipo Watershed • DENR, MWSS and the two concessionaires - Maynilad and MWCI MAINTENANCE ADAMSON UNIVERSITY CIVIL ENGINEERING
- 8. 8 Central Distribution System - originating from La Mesa Treatment Plants 1 & 2, small independent, distribution network centered on deep wells and the Putatan Pumping Station supplied by the Putatan Treatment Plant. DISTRIBUTION ADAMSON UNIVERSITY CIVIL ENGINEERING
- 9. 9 La Mesa Treatment Plant 1 is a conventional-type plant with a maximum design capacity of 1500 million liters per day (MLD). It was designed by American company Camp, Dresser and Mckee. Flows to four (4) kms through the 3.2M diameter pipe to an underground reservoir at Bagbag, Novaliches, Quezon City and distributed by gravity to Quezon City, Caloocan, Manila, Malabon, Navotas, Pasay, Makati, Parañaque, Las Piñas and Cavite. LAMESA TREATMENT PLANT 1 ADAMSON UNIVERSITY CIVIL ENGINEERING
- 10. 10 La Mesa Treatment Plant 2 is a pulsator-type plant that has a design capacity of 900 MLD. It was designed by Degrémont, a French company recognized as a world specialist in water treatment plants. While the other portion of the discharge, 92% of LMTP2 treated water, flows through 2.2M diameter pipe to ARPS and is pump fed to the following areas with high elevation portions of Novaliches, Caloocan and Valenzuela through La Mesa Pumping Station, North A Annex and North C Annex. Treated water from Putatan Water Treatment Plant is supplied in Muntinlupa, Las Piñas and Parañaque. LAMESA TREATMENT PLANT 2 ADAMSON UNIVERSITY CIVIL ENGINEERING
- 11. 11 To check the integrity of pipelines, gauging points are placed in different areas in the distribution system. From the pumping stations, water is distributed to the customers, an estimated population of 9.5 million through a network of pipelines: • Primary • Secondary • Tertiary mains PIPELINES ADAMSON UNIVERSITY CIVIL ENGINEERING
- 12. 12 The size of the pipes size ranges from 50mm to 3200mm and is broken down as follows: The size of the pipes size ranges from 50mm to 3200mm and is broken down as follows: • 583 km of primary mains (350 to 3200 mm diameter) • 1038Kms. of secondary mains (200-300 mm diameter ) • 5,328 km of tertiary mains (<200 mm diameter) Primarily, steel pipes ranging from 350 mm diameter to 600 mm diameter are cement coated (inside lining), while those ranging from 750 mm to 2200 mm have asphalt lining. SIZE OF PIPES ADAMSON UNIVERSITY CIVIL ENGINEERING
- 13. 13 • Asbestos cement • Cast iron • Concrete • Steel • Black iron • Ductile iron • PVC TYPES OF MATERIAL USED FOR PIPES ADAMSON UNIVERSITY CIVIL ENGINEERING
- 14. 14 • La Mesa PS • Commonwealth PS • Caloocan PS • D. Tuazon PS • Algeciras PS • Villamor PS • Noveleta PS • Sacred Heart PS • Daang Hari PS • North C Annex PS • Ermita PS • Baesa PS • Pagcor PS • Patindig Araw PS • Marcos Alvarez PS • Molino Bacoor PS • Litex PS • Alazap PS 18 PUMPING STATIONS: ADAMSON UNIVERSITY CIVIL ENGINEERING
- 15. 15 • Pagcor PS • Villamor PS • Pasay and Lamesa PS • The management systems include methods for measuring and tracking customer satisfaction as well as the consistency in the procedures of the daily operations of the water network and pumping stations that result in a more consistent quality of drinking water delivered to the consuming public. 3 PUMPING STATION ADAMSON UNIVERSITY CIVIL ENGINEERING
- 16. 16 There are 1127 monitoring points in the distribution network to verify the quality of water produced both for surface and deep well water supply. Central Laboratory performs regular examinations for bacteriological, physical, and chemical analysis. Compliance with drinking water quality standards is regulated by the Department of Health (DOH), the lead agency tasked to implement the Sanitation Code of the Philippines. WATER QUALITY AND QUANTITY ADAMSON UNIVERSITY CIVIL ENGINEERING
- 17. 17 Treated water produced by Maynilad is intended for general consumption by ingestion from drinking and food preparation and other domestic purposes as well as for commercial and industrial use. Conforming to standards set by the latest edition of Philippine National Standards for Drinking Water ensure that Maynilad’s water is safe and potable to drink without further treatment or boiling by the consumers. WATER QUALITY AND QUANTITY ADAMSON UNIVERSITY CIVIL ENGINEERING
- 18. 18 As of January 2019, 97.73% of the customers have a 24-hour uninterrupted water supply, while 2.27% have intermittent water due to low pressure, or no water at all due to inadequacy of the water supply. ISSUES THE 12 BUSINESS AREAS WHERE WATER IS DISTRIBUTED AND HANDLE THE NUMEROUS SERVICE CONNECTIONS ARE: • Novaliches-Valenzuela • Fairview-Commonwealth • North Caloocan • Malabon-Navotas • South Caloocan • Quirino-Roosevelt • South Manila-Pasay-Makati • Sampaloc • Tondo • Muntinlupa-Las Piñas • Parañaque • Cavite ADAMSON UNIVERSITY CIVIL ENGINEERING
- 19. 19 • HAZARD IDENTIFICATION AND RISK ASSESSMENT AND DETERMINATION AND VALIDATION OF CONTROL MEASURES, REASSESSMENT AND PRIORITIZATION OF RISKS ADAMSON UNIVERSITY CIVIL ENGINEERING
- 21. 21 Water losses Due to: • Reprivatized • old and inefficient distribution system Solutions: • massive pipe replacement program • Plugged pipe leaks • Total repairs After launching what was dubbed as the “largest NRW management project in the world”, Maynilad has successfully brought down its NRW level to an all-time low of 31% by the end of 2017. ADAMSON UNIVERSITY CIVIL ENGINEERING
Editor's Notes
- The West Zone concession area , covers a total area of 540 km2 and consists of eleven cities, Caloocan, Valenzuela, Malabon, Navotas, Quezon City, Manila, Pasay, Parañaque, Las Piñas, Makati and Muntinlupa in Metro Manila as well as one city, Cavite City, and five towns, Imus, Bacoor, Rosario, Kawit and Noveleta, in Cavite province. At the time of the privatization, there were only around 465,000 service connections in the West Zone. As of January 2019, Maynilad has installed a total of 1,411,702 water service connections covering more than 9.54 million people
- The metro draws 97% of its raw water supply from the Umiray-Angat-Ipo system in Norzagaray, Bulacan, and this has been the only source for decades. And the remaining 3% comes from the Laguna Lake.
- Maynilad, as the concessionaire for the West Zone of greater Metro Manila, recognized the increasing current and future water supply requirements and therefore sought to develop an alternate water source to help cater to the customers, specifically in Muntinlupa, Las Piñas and Cavite. LAGUNA LAKE -The remaining 3% of raw water supply is sourced from the Laguna Lake.
- Angat Dam- It is operated and maintained by the Angat Hydropower Corporation (AHC) which is a joint consortium between Korea Water (KWater) and San Miguel Corporation. MWSS gets 4,000 MLD of water supply source from this facility and 60% of this is allocated to Maynilad.