The Water Treatment Plants are located at the Pasonanca Park in Barangay Pasonanca, Zamboanga City. It is about 6 kilometers away fro m the city proper. The main office of the Operations Group is housed within the area of the treatments plants.
WTP – PHASE I
The Water Treatment Plant – Phase I was commissioned in 1981 with a production capacity of 35,000 cubic meters per day.
WTP – PHASE II
The Water Treatment Plant – Phase II was commissioned in 1991 with a production capacity of 35,000 cubic meters per day.