sentences:  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 or the critical mark, the MWSS, Maynilad, and Manila Water begin to regulate the water supply they dispense to their patrons.