Published May 13, 2021, 12:28 PM Maynilad Water Services, Inc. (Maynilad), the government water concessionaire for the West Zone, said it will cost them P29 billion to build several sewage treatment plants (STP) across the metropolis. In a statement, Maynilad said that it is now simultaneously building several STPs in Caloocan, Las Piñas, Central Manila, Valenzuela, and Muntinlupa. Based on the company’s estimates, the CAMANA (Caloocan-Malabon-Navotas) and Las Piñas Water Reclamation Facilities will contribute around 16 percent additional sewerage coverage in the West Zone with a target completion date in 2025. Under the 2008 writ of continuing mandamus issued by the Supreme Court, the Metropolitan Waterworks and Sewerage System (MWSS) concessionaire, is required to improve and expand its sewerage services to ensure that all the wastewater being released to Manila Bay have been treated properly.