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The Water Treatment Plant is responsible for the maintenance and 24-hour/day operation of the City’s 32 million gallon-per-day facilities. The City blends 2 ground water wells with its raw water. The City has 7 pump stations and 8 drinking water storage reservoirs. 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.  Each year a report is published on the quality of water delivered by Contra Costa Water District to the cities of Antioch, Pittsburg, Martinez and Diablo Water District in Oakley per the direction of the Department of Public Health and the US Environmental Protection Agency.

The treated drinking water delivered to your home meets all drinking water standards set by the state and federal governments. Click to view a copy of the 2019 Annual Water Quality Report [pdf] Click below to view a copy of the Water Treatment Plant Process Changes 2017 (Chlorine Dioxide.) Water Treatment Plant Process Changes 2017 [pdf]

Water treatment staff are located at the City’s Water Treatment Plant, 300 Olympia Drive.

Last updated: 8/18/2020 1:45:45 PM