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Water Treament Plant Monitoring and Reporting

DWR operates and maintains 12 Public Water Systems (PWS) along the SWP. CA Health and Safety Code [HSC] §116275(h) defines a PWS as a system for the provision of water for human consumption through pipes or other constructed conveyance that has 15 or more service connections or regularly serves at least 25 individuals daily for at least 60 days out of the year . The SWP PWSs, also known as Water Treatment Plants (WTP) are operated by the field divisions' drinking water treatment certified staff.

Five of the WTPs are permitted by the CA Department of Public Health, Division of Drinking Water and Environmental Management as small water systems (SWS). A SWS is defined as a PWS serving less than or equal to 1,000 service connections and less than or equal to 3,300 population [HSC §116275(n)]. The 12 WTPs provide drinking water to staff, and irrigation and fire flow supplies to the SWP facilities.

Through their operations and reporting, DWR staff ensures compliance with the State drinking water regulations, supports source water assessments, and promotes drought preparedness and water conservation efforts. Additionally, staff oversees equipment installation and responds to operational emergencies.

The following field divisions operate these WTPs:

  • Delta Field Division - Harvey O. Banks (CDPH permitted SWS) and Skinner Fish Facility
  • San Luis Field Division - San Luis Operations and Maintenance (O&M) Center (CDPH permitted SWS), Dos Amigos, and Coalinga Sub-Center
  • San Joaquin Field Division - Teerink, Chrisman (CDPH permitted SWS), and Edmonston (CDPH permitted SWS)
  • Southern Field Division - Oso, Warne, Vista Del Lago (CDPH permitted SWS), and Cedar Springs

Consumer Confidence Report (CCR):

Every year each permitted SWS is required to provide a CCR to its water users by July 1st as required by HSC §116470. To request a CCR, Contact Us.

Visit the State Water Resources Control Board, Division of Drinking Water Programs for more CCR information.