Currently, PPWSA has the capacity to produce 632,000m³/day of potable water, compared to its initial capacity at 592,000m³/day in 2019, through 4 WTPs:

Water Treatment PlantInitial CapacityCurrent Capacity
Phum Prek WTP150,000m³/day170,000 m³/day
Chroy Changva WTP130,000m³/day150,000 m³/day
Niroth WTP260,000m³/day260,000 m³/day
Chamkar Mon WTPUnder Construction52,000 m³/day

Daily potable water treatment and supply is based on the water consumption of the population within the service area. This demand may vary with seasonal and weather related factors. The management of each plant's operation is based on the water demand and the economic efficiency of each plant. This explains the utilization rate of each plant not being uniform.