The La Mesa Dam is part of the Angat-Ipo-La Mesa water system which supplies water to the population of Metro Manila and surrounding provinces.

The water collected in the reservoir is treated at the La Mesa and Balara Treatment Plants.
The La Mesa facility has a design capacity of 2,400 million litters per day (mld) while the Balara facility has a capacity of 1,600 mld.
The La Mesa treatment facility serves the western half of Metro Manila while the Balara facility serves the eastern portion of the metropolis.

Whenever the water level of the dam drops below 69 meters (226 ft) or the critical mark, the MWSS, Maynilad, and Manila Water begin to regulate the water supply they dispense to their patrons.
The La Mesa Dam is part of the Angat-Ipo-La Mesa water system which supplies water to the population of Metro Manila and surrounding provinces.
The water collected in the reservoir is treated at the La Mesa and Balara Treatment Plants. The La Mesa facility has a design capacity of 2,400 million litters per day (mld) while the Balara facility has a capacity of 1,600 mld. The La Mesa treatment facility serves the western half of Metro Manila while the Balara facility serves the eastern portion of the metropolis.
Whenever the water level of the dam drops below 69 meters (226 ft) or the critical mark, the MWSS, Maynilad, and Manila Water begin to regulate the water supply they dispense to their patrons.
La Mesa Dam and Reservoir