"ANTIOCH Antioch has finally turned on the taps of its long-awaited brackish water desalination plant, which is expected to help the city safeguard its water supply for decades to come. The $160 million facility, hailed by city leaders as a milestone in California's water sustainability efforts, will meet up to 40% of Antioch's water needs. Residents and businesses use up to 11 million gallons of water daily in the winter and 23 million in the summer."
"With the plant in service, the city can treat and convert into drinking water about 6 million gallons a day of brackish water pumped from the Sacramento-San Joaquin River Delta. Water treatment plant Superintendent Marcus Woodland, left, presses a start button at the city's new Brackish Water Treatment Plant on Monday, Sept. 15, 2025, in Antioch, Calif. The plant is designed to supply up to 40% of Antioch's drinking water, using energy-efficient, low-waste technology to treat brackish water from the Delta."
Antioch opened a $160 million brackish water desalination plant capable of meeting up to 40% of the city's drinking water demand. The facility can treat about 6 million gallons per day of brackish Delta water, while residents and businesses use 11 million gallons daily in winter and 23 million in summer. Increasing saltwater intrusion had previously limited summer and fall Delta pumping, forcing purchases from the Contra Costa Water District. The project enhances drought resilience for Antioch and neighboring communities, required nine years and over $100 million in state financing, extensive environmental studies, and federal and state permits to protect endangered species.
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