A looming threat hangs over Metro Manila: a potentially powerful El Niño weather pattern is forecast to develop by mid-year, raising concerns about water security for millions.
Authorities are bracing for drier-than-normal conditions, a scenario that could trigger droughts and significantly impact water allocations from Angat Dam, the primary source for approximately 90% of the capital’s drinking water.
Preparations are already underway, with water providers directed to reactivate existing strategies. These include bringing dormant deepwells back online, optimizing treatment plant performance, and aggressively reducing water loss throughout the distribution networks.
The urgency stems from a recent escalation in the El Niño warning, upgraded to an “El Niño Alert” by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA). Experts predict a 79% chance of the event fully developing between July and August, potentially lasting into early 2027.
This isn’t just a typical dry spell; the last El Niño event, from 2023-2024, ranked among the five strongest ever recorded globally, signaling the potential for severe impacts.
To mitigate the risk, requests have been made to increase the year-end water level at Angat Dam, hoping to maximize available reserves before the dry season fully sets in. This proactive measure aims to provide a crucial buffer against potential shortages.
Manila Water, serving over 7.8 million customers, is actively diversifying its water sources, lessening dependence on Angat Dam. This includes expanding the use of facilities drawing water from Laguna Lake, like the Cardona and East Bay treatment plants.
A significant investment in the Upper Wawa Dam, capable of delivering 710 million liters of water daily, is bolstering supply reliability and building long-term resilience against climate fluctuations for the East Zone.
Maynilad, providing service to 10.5 million residents, is focusing on system optimization. This involves carefully managing water pressure, maximizing treatment plant output, and relentlessly pursuing reductions in non-revenue water – water lost through leaks and inefficiencies.
New infrastructure projects are also in development, including a 200-million-liter raw water reservoir and a 40-million-liter treated water reservoir, designed to create vital buffer storage and ensure more consistent service during peak demand.
Both water providers emphasize that while infrastructure improvements are critical, responsible water usage by consumers remains a powerful tool in safeguarding the region’s water supply. Every drop conserved contributes to overall resilience.
The focus is clear: a multi-pronged approach combining infrastructure investment, operational efficiency, and public awareness is essential to navigate the challenges posed by the approaching El Niño and secure a reliable water future for Metro Manila.
