Currently, PPWSA has the capacity to produce 530,000m³/day of potable water, compared to its initial capacity at 560,000m³/day, through 4 WTPs:

Water Treatment PlantCapacity
Phum Prek WTP150,000m³/day
Chroy Changva WTP130,000m³/day
Niroth WTP260,000m³/day
Chamkar Mon WTP20,000m³/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.

The following table shows the average daily volume of potable water treatment in 2017:

Water Treatment PlantCapacity       Average Volume of Water TreatedRate of Operation
Phum Prek150,000 153,648 104%
Chroy Changva130,000 142,205 111%
Niroth260,000 230,294 90%
Chamkar Mon20,000 5,461 28%
Total560,000 531,608 95%

Yearly Production