Skip to Main Content
Contact Us

Project: City of Antioch Brackish Water Desalination Project

Description: The Project will construct, adjacent to the existing Antioch Water Treatment Plant A, a brackish water desalination facility capable of producing up to 6 mgd of finished water. The treatment facility construction will include storage tanks, pumps, an electrical substation, and supporting piping, equipment, and appurtenances. In addition, a new San Joaquin River intake pump station and fish screen will be constructed at the existing intake location and the existing intake pump station and fish screen removed. The exi sting intake pipeline will be modified to enable river water to flow directly to Treatment Plant A and the new desalination facility. A new brine line will be constructed to convey brine from the desalination facility to the existing Delta Diablo Wastewater Treatment Plant outfall where it will be discharged to New York Slough with the treated wastewater effluent through the existing Delta Diablo outflow.

Reference Number: 3860-P01-326

Implemented By: City of Antioch

Objective: The objectives of the project are to improve water supply reliability and operational flexibility while improving water quality and ecosystem conditions, especially during droughts and future changes in Delta water management.

Type: Water Management

Total Cost: $62,963,232.00

Project Status: Project Implementation

On Time?: Yes    Within Scope?: Yes    Within Budget?: Yes

Estimated Completion: 10/31/2022    Actual Completion:

Associated Counties: Contra Costa

Project Benefits a Disadvantaged Community (or SDAC): Yes

Contribution SourcesContribution DateContribution Amount
Local Contribution3/12/2018$52,217,732.00
Prop. 1, Water Recycling3/12/2018$10,000,000.00

Project MetricMetric TopicQuantityUnit
Water ManagementDesalination  

Water Action Plan Target

Make Conservation a California Way of LifeAction Description
Increase Regional Self-Reliance and Integrated Water Management Across All Levels of GovernmentAction Description
Manage and Prepare for Dry PeriodsAction Description


loading loading