Philippines Potable Water System Improvement Project Uses Filter Underdrain Blocks To Improve Backwash Efficiency

Founded in 1997, the Manila Water Company (MWC) serves the potable water needs of more than five million residents of the Philippines capital and cities to the east. The company serves as the private partner in a public-private partnership with the Philippines government in operating the Metropolitan Waterworks and Sewerage System for Metro Manila’s East Zone.

MWC’s Balara water facility consists of two separate treatment plants in Quezon City: Balara 1, with a design capacity of 470 mld (124 mgd); and Balara 2, with a design capacity of 1,130 mld (298 mgd). Both plants had produced adequate quantities of water to acceptable standards of quality. Only during extreme weather conditions, such as typhoons, had water quality fallen below expectations.