Olympic Well Field Restoration and Arcadia Water Treatment Plant Expansion Project
The Olympic Well Field
Restoration and Arcadia Water Treatment Plant Expansion Project (Project) is
intended to enhance sustainability of the City of Santa Monica’s (City’s) local
water supply through developing alternative water supplies and expanding local
groundwater supplies. The proposed Project would further reduce the City’s
reliance upon purchased imported water from the Metropolitan Water District of
Southern California (MWD). The Project would accomplish this goal through the
restoration of the Olympic Well Field’s pumping capacity, expansion of local
groundwater production and concurrent reduction of imported water supply,
conveyance of the extracted groundwater to a new Olympic Advanced Water
Treatment Facility (co-located at the Arcadia Water Treatment Plant [WTP]) via
a new dedicated pipeline, and upgrades to the Arcadia WTP with an innovative
Reverse Osmosis (RO) concentrate treatment technology to enhance production
efficiency. Upon Project completion, the overall raw water treatment capacity of
the Arcadia WTP would be expanded from approximately 10 million gallons per day
(mgd) to approximately 13 mgd.
Although not required by CEQA, the City is circulating an addendum to the Olympic Well Field Restoration and Arcadia Water Treatment Plant Expansion Project Mitigated Negative Declaration for a 14-day public review period for all interested persons to submit comments on the adequacy of the addendum. The comment period starts on May 17, 2022, and ends at 5:30 p.m. on May 31, 2022. The addendum will also be on the June 14, 2022 City Council agenda for adoption. For comments, questions, and inquiries, please e-mail: water.resources@santamonica.gov
Project Components
Olympic Well Field Restoration Components
Arcadia Water Treatment Plant Expansion Components
In the News
Santa Monica’s Journey to Water Self-Sufficiency
Southern California City Seeks to End Reliance on Imported Water
Reversing RO Flow in California
Environmental Documents
Initial Study and Mitigated Negative Declaration
First Addendum to the Mitigated Negative Declaration
Second Addendum to the Mitigated Negative Declaration