The City of Antioch Water Treatment Plant operates 24-hours/day under the regulatory oversight of the State Water Resources Control Board Division of Drinking Water.

This division is responsible for the operation and maintenance of 2 conventional surface water treatment plants with a combined capacity of 36 million gallons per day.  The transmission system consists of 11 booster pump stations (8 with emergency standby generators) maintain the pressure in 4 major pumping zones, 12 treated water storage reservoirs and 3 emergency interconnections with other agencies.  A raw water transmission system includes one San Joaquin River pump station, 2 canal pump station and a municipal raw water reservoir.

The Water Treatment Plant ensures that the water distributed by the City is of the highest quality possible and meets or exceeds all State and Federal health standards.

Please use the link below for our Annual Water Quality Report for details.