West Zone concessionaire Maynilad Water Services, Inc. has officially commissioned its Cupang Water Reclamation Facility (WRF) in Muntinlupa City, which is now treating wastewater from Barangays Alabang, Cupang, and Bayanan.
Located in Brgy. Cupang, the facility has a treatment capacity of 46 million liters per day (MLD), supporting Maynilad’s long-term strategy to expand sewerage coverage and protect local waterways by removing harmful pollutants from wastewater prior to safe discharge.
To ensure full alignment with evolving environmental regulations, Maynilad has also initiated the upgrading of the facility to comply with the stricter effluent standards set under Department Administrative Order (DAO) 2016-08, as amended by DAO 2021-19 of the Department of Environment and Natural Resources (DENR). These standards prescribe limits on key wastewater parameters to safeguard public health and the environment.
“We are not only expanding our wastewater treatment capacity—we’re also future-proofing our facilities to comply with the latest environmental standards,” said Maynilad President and CEO Ramoncito S. Fernandez. “These investments reflect our commitment to sustainability and regulatory compliance as our communities continue to grow.”
The upgrade reflects Maynilad’s proactive approach to building resilient and sustainable infrastructure. The company has kept the Metropolitan Waterworks and Sewerage System (MWSS) informed throughout the process. While DAO compliance was not part of the facility’s original scope, it is now being integrated to ensure long-term regulatory alignment.
The Cupang WRF is one of two major wastewater treatment facilities recently completed in Muntinlupa. Along with the nearby Tunasan WRF, it significantly increases the city’s sewerage treatment capacity, contributing to Maynilad’s broader mission of improving sanitation conditions and promoting environmental protection across the West Zone.
Maynilad is the largest private water concessionaire in the Philippines in terms of customer base. It is a concessionaire of the Metropolitan Waterworks and Sewerage System (MWSS) for the West Zone of the Greater Manila Area, which is composed of the cities of Manila (certain portions), Quezon City (certain portions), Makati (west of South Super Highway), Caloocan, Pasay, Parañaque, Las Piñas, Muntinlupa, Valenzuela, Navotas and Malabon, all in Metro Manila; the cities of Cavite, Bacoor and Imus, and the municipalities of Kawit, Noveleta and Rosario, all in Cavite Province.
