
Ocean Plan Requirements for Seawater Desalination Facilities
Seawater Desalination Overview
Desalination facilities produce freshwater by removing salts from brackish or saltwater for municipal, industrial, or other uses. Seawater desalination draws water from the ocean and passes the water through a membrane, resulting in an amount of fresh water and an amount of hypersaline brine. The Ocean Plan includes requirements to ensure the construction and operation of seawater desalination facilities minimize intake and mortality of all forms of marine life. Mitigation measures are required to address harmful impacts to marine life that occur even when a desalination facility uses the best available site, design, and technology feasible. State Water Board Resources Control Board Resolution 2015-0033 describes the responsibility regarding the siting, planning, construction, and operation of desalination plants in the state of California.
Draft Seawater Desalination Siting and Streamlining Report to Expedite Permitting
The Draft Seawater Desalination Siting and Streamlining Report to Expedite Permitting (Draft Report) is now available. Staff solicited public comment in July 2023 and anticipate finalizing an updated report for submission to the Governor’s Office in Fall 2023.
State Water Board staff convened a Seawater Desalination Interagency Group, comprised of state and federal agencies that review environmental documents and permit or lease applications for proposed seawater desalination facilities, to develop a report in fulfillment of directives in California’s Water Supply Strategy: Adapting to a Hotter Drier Future. The Draft Report has no regulatory force or effect but includes interagency recommendations to clarify the most efficient permitting process while ensuring appropriate review of projects.
To learn more about this report, please watch our Informational Webinar, which staff held on July 21, 2023, or view the PDF of webinar slides. The purpose of the informational webinar was to share the impetus and approach for developing the Draft Report and provide an overview of its recommendations, including brief presentations from some of the interagency partners involved in this collaborative effort.
For more information, please contact Clifton Herrmann at Clifton.Herrmann@waterboards.ca.gov.
Seawater Desalination Facilities
- Desalination Plant Entrainment Impacts and Mitigation, October 9, 2013
- Hyper-Salinity Toxicity Thresholds for Nine California Ocean Plan Toxicity Test Protocols, July 2012
- Mitigation and Fees for the Intake of Seawater by Desalination and Power Plants, March 14, 2012
- Management of Brine Discharges to Coastal Waters - Recommendations of a Science Advisory Panel, March 2012
The Seawater Desalination MOA memorializes the relationship between agencies to coordinate timely and effective review of environmental documents and permits or lease applications for proposed seawater desalination facilities, and demonstrates the Water Boards’ ongoing commitment to interagency coordination. The included agencies and their websites can be found below:
Monterey Bay National Marine Sanctuary
California Coastal Commission
National Marine Fisheries Service’s West Coast Region
Region 1 – North Coast
Charles Reed
Charles.Reed@waterboards.ca.gov
(707) 576-2752
Region 2 – San Francisco Bay
Thomas Mumley
Thomas.Mumley@waterboards.ca.gov
(510) 622-2395
Peter von Langen
Peter.VonLangen@waterboards.ca.gov
(805) 549-3688
Region 4 – Los Angeles
Jeong-Hee Lim
Jeong-Hee.Lim@waterboards.ca.gov
(951) 576-6616
Region 8 – Santa Ana
Julio Lara
Julio.Lara@waterboards.ca.gov
(951) 782-4995
Region 9 – San Diego
Fisayo Osibodu
Olufisayo.Osibodu@waterboards.ca.gov
(619) 521-8036
Contact the State Water Board
Clifton Herrmann
Recycled Water and Desalination Unit
Clifton.Herrmann@waterboards.ca.gov
(916) 327-8638
Laura McLellan
Recycled Water and Desalination Unit
Laura.McLellan@waterboards.ca.gov
(916) 319-8288
Gintare Huckeba
Recycled Water and Desalination Unit
Gintare.Huckeba@waterboards.ca.gov
(916) 323-0684