East Bay Ph1 facility strengthens Manila Water’s strategic water reserves
MANILA, Philippines – Amid concerns over the effects of El Niño and lower water allocations from Angat Dam, Manila Water assures customers across its East Zone concession area of continued 24/7 water supply, backed by years of strategic investments in alternative water sources, including the East Bay Phase 1 Water Treatment Plant (WTP).
Physically completed in 2024 and started commissioning and process proving in 2025, the East Bay Phase 1 WTP has become a critical component of Manila Water’s strategic water reserves, providing up to 50 million liters per day (MLD) of treated water drawing water from the eastern flank of Laguna Lake. The P2.7-billion facility features an 8-million-liter reservoir, intake and pumping facilities, and a multi-stage treatment process that utilizes Dissolved Air Flotation (DAF), granular activated carbon filtration, and reverse osmosis technologies to ensure water quality. By tapping an alternative raw water source outside of Angat, the facility strengthens supply reliability and resilience and enhances the company’s ability to meet customer demand during periods of reduced water availability and climate-related challenges.
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“The East Bay Phase 1 Water Treatment Plant is a testament to Manila Water’s foresight and long-term planning. We recognized early on the need to diversify our water sources and build strategic reserves that would help protect our customers from supply uncertainties. As climate challenges become more pronounced, investments like East Bay allow us to continue providing reliable water service while strengthening the resilience of our overall system,” Manila Water Corporate Communications Group Head Dittie Galang said.
The East Bay Phase 1 WTP was designed to serve growing communities in Rizal Province while contributing additional supply to Manila Water’s overall distribution network. Its continued operation provides the company with greater flexibility in managing available resources across the concession area.
Manila Water is continuing to develop its raw water portfolio that complement supply from Angat Dam, including the upcoming completion of the 200-MLD East Bay Phase 2 Water Treatment Plant and the 220-MLD Kaysakat Water Treatment Plant.
The East Zone concessionaire has likewise expanded its strategic water reserves through alternative sources such as the 100-MLD Cardona Water Treatment Plant, the 80-MLD Calawis Water Treatment Plant, and the recently acquired Upper Wawa Dam, which can provide up to 710 MLD of additional raw water supply. Together, these assets help strengthen water security, improve supply reliability, and reinforce Manila Water’s resilience amid increasingly variable climate conditions.
As climate variability continues to place pressure on water resources, Manila Water continues to invest in infrastructure that enhances water security and protects customers from future supply challenges.
