The City of Coalinga’s water system receives its water from the San Luis Canal (California Aqueduct), which is then diverted approximately 9 miles through the Coalinga Canal, which is maintained by Westland’s Water District.
Conventional Surface Water Treatment
The City then provides conventional surface water treatment, with processes that include:
Then as a secondary disinfection, chloramination is used to maintain chlorine residual in the distribution system while reducing further production of disinfection byproducts. The maximum designed treated water production is 12 million gallons per day.
The treated water is then pumped to five reservoirs with an estimated combined storage of 16 million gallons. These reservoirs supply:
The City of Coalinga
Many of the surrounding commercial facilities
Pleasant Valley State Prison
The State Hospital
It is our constant goal to provide you with a safe and dependable supply of water. Water quality is tested in house daily and outsourced weekly to independent labs to ensure that we are meeting or exceeding all Federal and State regulations.