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