Aerial view of the ongoing demolition of the old San Juan Reservoir and the construction of the new 56ML earthquake-resilient facility along N. Domingo Street in Quezon City. Scheduled for completion by the third quarter of 2026, the reservoir will help secure reliable water supply for the growing populations of Quezon City, Mandaluyong, and San Juan in the years ahead.
Manila Water is developing an earthquake-resilient reservoir to strengthen water supply reliability for the fast increasing cities of Quezon City, San Juan, and Mandaluyong. The ₱932-million San Juan Reservoir project, located along N. Domingo Street in Quezon City is built to resist earthquakes up to magnitude 7.2 and hold up to 56 million liters (ML) of water, guaranteeing uninterrupted operation even during significant seismic activity.
Modern technical standards, including improved electrical, instrumentation, mechanical, and site development systems, are incorporated into the new facility, which replaces the original reservoir constructed in 1968. Its sturdy design shows Manila Water’s commitment to creating resilient infrastructure that can meet the region’s expanding demand for clean and reliable water.
“The San Juan Reservoir is more than just a new facility. It’s a forward-looking investment in resilience and reliability. As our cities continue to grow, we must ensure that our infrastructure keeps pace. This project reflects Manila Water’s commitment to safeguarding water supply for our communities, even in the face of natural disasters like major earthquakes,” Manila Water Communication Affairs Group Director Jeric Sevilla.
As of July 2025, the project has reached 26.90% completion and is on track for full completion by the third quarter of 2026. Upcoming construction milestones include continuous excavation and lean concreting, rebar fabrication for Phase 1 Mat Foundation, and installation of Mat Foundation Rebar. To minimize disruption to nearby communities, acoustic barriers have been installed to reduce noise and other construction-related disturbances.
This reservoir is a calculated investment in long-term preparedness for emergencies and water security. The San Juan Reservoir will be essential to Manila Water’s larger initiatives to develop and protect water delivery infrastructure throughout the East Zone as Metro Manila’s population grows.
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