MANILA - The water level at Angat Dam continued to fall as rains failed to fill up the reservoir, according to the latest data from weather bureau PAGASA.
As of 6 a.m. Sunday, the water level at the Angat Dam was at 159.15 meters or 0.3 meters lower than its 159.45 level on Saturday.
The minimum level needed to keep normal supply levels to households and businesses in Metro Manila and surrounding provinces is 160 meters.
Meanwhile, Angat's level needs to be above 180 meters to supply water for irrigation and power generation. The reservoir's normal high water level is 210 meters.
The reservoir's lowest level was recorded in July 2010 when Angat’s water level dipped to 157.55 meters as the country was experiencing El Niño.
Earlier this month, a scientist from the University of the Philippines warned that Angat's water supply may last just 3 weeks without sufficient rainfall over the watershed.
The dam's declining level prompted regulators to slash the water supply allocation in Metro Manila to 3.1 billion liters per day from the normal 4 billion liters per day since May.
Manila Water has been implementing service interruptions of up to 18 hours a day in parts of Metro Manila and Rizal province amid the reduced water supply.
Maynilad has also started implementing service interruptions in its concession zone.
The National Water Resources Board estimated that the Angat watershed needs 2 to 3 tropical storms to raise its water to a level that would allow normal operations.