MANILA, Feb. 8 -- A hydrologist on Thursday called on the public, especially Metro Manila residents, to conserve water as dam levels continue to decrease.

Angat Dam, which supplies 98 percent of the potable water in Metro Manila through the Metropolitan Waterworks and Sewerage System, has seen an average drop of 0.9 meter in its water level from Feb. 1 to 8, Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) hydrologist Sonia Serrano said in an interview with the Philippine News Agency.

Serrano said most of the dams' water levels have been on a downward trend since January.

As of Feb. 8, Angat's water level is at 209 meters, 0.21 meter lower than the previous day; Binga is at 571.88 meters (0.62 meter...