WATER TREATMENT PLANTS

West Zone water supply is processed at the La Mesa Treatment Plants 1 and 2 in Novaliches, Quezon City.

La Mesa Treatment Plant 1 is a conventional-type plant with a maximum design capacity of 1500 MLD designed by American company Camp, Dresser and Mckee. Fully operational since March 31, 1983, the plant initially started operations in March 1982 for only 300 MLD.

The La Mesa Treatment Plant 2 was commissioned in 1995. It is a plant of the pulsator-type that has a design capacity of 900 MLD with an allowable overload of 990 MLD. It was designed by Degrémont, a French company recognized as a world specialist in water treatment plants.

Both treatment plants are ISO 9001:2000-certified, establishing that Maynilad’s water treatment process meets global standards for Quality Management.

Maynilad's Putatan treatment plant is the first water treatment facility that taps into Laguna Lake, the largest lake in the country and the third largest freshwater lake in Southeast Asia, as an alternative water source to Angat Dam. It is the largest membrane-based water treatment plant in the Philippines, and is also the first of its kind in the country to use large-scale microfiltration and reverse osmosis.

The state-of-the-art treatment plant uses a multi-stage process of Dissolved Air Flotation (DAF), Microfiltration, Reverse Osmosis and Chlorination to ensure that the water from Laguna Lake passes the Department of Health (DOH)-issued Philippine National Standards for Drinking Water (PNSDW).