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Manila Bulletin devider Business devider The Stock Market devider Maynilad activates new 20 MLD Muntinlupa water reclamation facility

Maynilad activates new 20 MLD Muntinlupa water reclamation facility

Published Nov 21, 2025 11:35 am
Officials from Maynilad and government agencies lead the ribbon-cutting ceremony for the newly inaugurated Tunasan Water Reclamation Facility (WRF) in Muntinlupa City. From left: Lorna B. Misa, OIC Head of ESC, EPNRO and LMO; Florencio G. Diwa Jr., OIC Director, DENR NCR MEO South; Atty. Patrick Lester N. Ty, Chief Regulator, MWSS RO; Engr.Leonor C. Cleofas, Vice-Chairman and Administrator, MWSS; Engr. Henry P. Pacis, Assistant Regional Executive Director, DENR-NCR; Elpidio J. Vega, Chairman, MWSS Board of Trustees; Ramoncito S. Fernandez, President and CEO of Maynilad; Christopher Jaime T. Lichauco, Chief Operating Officer of Maynilad; and Junn-Yeu C. Lock, Technical Assistant to the President, DMCI. The 20-MLD Tunasan WRF, Maynilad’s 25th wastewater treatment facility, expands sewerage service in the south and helps protect Laguna de Bay by treating used water from the Tunasan catchment area in compliance with DENR DAO 2016-08 and DAO 2021-19.
Officials from Maynilad and government agencies lead the ribbon-cutting ceremony for the newly inaugurated Tunasan Water Reclamation Facility (WRF) in Muntinlupa City. From left: Lorna B. Misa, OIC Head of ESC, EPNRO and LMO; Florencio G. Diwa Jr., OIC Director, DENR NCR MEO South; Atty. Patrick Lester N. Ty, Chief Regulator, MWSS RO; Engr.Leonor C. Cleofas, Vice-Chairman and Administrator, MWSS; Engr. Henry P. Pacis, Assistant Regional Executive Director, DENR-NCR; Elpidio J. Vega, Chairman, MWSS Board of Trustees; Ramoncito S. Fernandez, President and CEO of Maynilad; Christopher Jaime T. Lichauco, Chief Operating Officer of Maynilad; and Junn-Yeu C. Lock, Technical Assistant to the President, DMCI. The 20-MLD Tunasan WRF, Maynilad’s 25th wastewater treatment facility, expands sewerage service in the south and helps protect Laguna de Bay by treating used water from the Tunasan catchment area in compliance with DENR DAO 2016-08 and DAO 2021-19.
Maynilad Water Services Inc. activated its newest wastewater facility in Southern Metro Manila, the Tunasan Water Reclamation Facility (WRF) in Muntinlupa City, as the concessionaire expands its services.
The Tunasan WRF is the company’s 25th wastewater treatment project, capable of treating up to 20 million liters of wastewater daily (MLD), according to a disclosure to the Philippine Stock Exchange on Friday, Nov. 21. The facility will provide cleaner water to approximately 83,000 customers in the area.
Wastewater from the Magdaong, Bubogan, and Tunasan creeks will flow through a 1.4-kilometer network of sewer pipes directly into the new plant.
The project adds to Maynilad’s total wastewater treatment capacity, boosting it to 790 MLD. This expansion is intended to broaden the company's sewerage and sanitation services and support the rehabilitation of Laguna de Bay.
Ramoncito S. Fernandez, Maynilad president and chief executive officer, said their new facility is a strategic investment for public health.
“By expanding sewerage coverage here in Muntinlupa and investing in modern treatment technologies, we help safeguard Laguna de Bay and strengthen responsible wastewater management in the West Zone,” he said.
In a related move, Maynilad said the concessionaire plans to increase its water storage capacity from 779 million liters to 960 million liters by 2026 through reservoir infrastructure expansions.
These reservoir projects are included in the company's ₱31.9 billion capital expenditure (capex) budget, which is set to be rolled out until 2030. Three new reservoirs are targeted for completion during this period: two will be located in Quezon City and one in Valenzuela. This infrastructure program aims to improve the water supply for Maynilad’s growing customer base.
Maynilad remains the country's largest private water concessionaire, servicing the western parts of Manila, Quezon City, Makati City, Caloocan City, Pasay City, Parañaque City, Las Piñas City, Muntinlupa City, Valenzuela City, Navotas City, Malabon City, and Cavite province.

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