Currently, PPWSA has the capacity to produce 490,000m³/day of potable water, compared to its initial capacity at 430,000m³/day in 2016, through 4 WTPs:

Water Treatment PlantCapacity
Phum Prek WTP150,000m³/day
Chroy Changva WTP130,000m³/day
Niroth WTP130,000m³/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 2016:

Water Treatment PlantCapacity       Average Volume of Water TreatedRate of Operation
Phum Prek150,000 167,047 111%
Chroy Changva130,000 158,026 122%
Niroth130,000 154,808 119%
Chamkar Mon20,000 12,128 61%
Total430,000 492,009 114%

Production of Four Treatment Plants Daily Production Yearly Production