Manila Water’s three major water systems keep East Zone supply reliable

MANILA, Philippines – Manila Water continues to provide reliable 24/7 water service to customers through a diversified supply portfolio anchored on three major water systems: the Angat-La Mesa Water System, the Laguna Lake Water System, and the Antipolo Water System.

The company’s long-term investments in these water sources have strengthened supply reliability despite challenges brought by El Niño, declining water levels in Angat Dam, and increasing demand across its service area.

“As we experience the full effects of a strong El Niño and the pressures it places on traditional water sources, our diversified supply systems provide greater resilience and flexibility in meeting the needs of our customers. These strategic investments help ensure that communities across the East Zone continue to have access to safe and dependable water services today and in the years ahead,” said Dittie Galang, Manila Water Corporate Communications Group Head.

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The Angat-La Mesa Water System remains a critical source of water for Metro Manila. To improve supply reliability, Manila Water, in partnership with the Metropolitan Waterworks and Sewerage System, invested in projects that help ensure sufficient inflows to Angat Reservoir, including the Sumag River Diversion Project and the rehabilitation of the Umiray-Angat Transbasin Project.

Complementing Angat is the Laguna Lake Water System, which taps Laguna de Bay as an additional water source. The system includes the 100-million-liter-per-day (MLD) Cardona Water Treatment Plant, which draws water from the central portion of the lake and serves around 800,000 customers in Rizal and nearby areas. On the eastern side of the lake, the P16.5-billion East Bay Water Supply Project is being developed. Its first phase, the 50-MLD East Bay Water Treatment Plant, is designed to serve up to 390,000 customers and currently supplies communities in eastern Rizal. The 200-MLD East Bay Phase 2 Water Treatment Plant, which is set for completion this year, will serve approximately two million customers in Pasig, Pateros, Taguig, and portions of Rizal province.

Meanwhile, the Antipolo Water System supports the growing water requirements of Rizal through the Wawa-Calawis System, which is anchored on the recently acquired 710-MLD Upper Wawa Dam. Its 80-MLD Calawis Water Treatment Plant, designed to serve about 900,000 customers, already provides water service to communities in Antipolo City and nearby areas. The 220-MLD Kaysakat Water Treatment Plant is expected to be completed later this year and will source water from Upper Wawa Dam. It will further boost water supply for approximately one million customers in Antipolo and neighboring Rizal municipalities.

Together, these three major water systems form a resilient and diversified supply network that enables Manila Water to continuously deliver safe, reliable, and sustainable water services to its more than 7.9 million customers in the East Zone.