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      Department of Public Works Bureau of Sanitation

The City of Los Angeles recently joined the City of Santa Monica, the County of Los Angeles and the State of California to dedicate the Westside Water Quality Improvement Project at Mar Vista Park in Council District 11. The project is a facility designed to treat urban runoff from the east side of the City of Santa Monica and parts of West L.A.

Located beneath the Mar Vista Park parking lot, the treatment system removes oil, grease, heavy metals, pesticides and trash from the runoff through screening, sedimentation and direct filtration before it reaches Ballona Creek and the Santa Monica Bay.

Operating on a gravity flow basis, the Westside Water Quality Improvement Project protects the coastal waters by treating urban runoff as much as possible before it returns to the ocean. The facility treats urban overflow during both wet and dry seasons. Funding for this project was provided by the State of California, with financial and administrative support provided by the City of Santa Monica, the City of Los Angeles Departments of Public Works and Recreation and Parks, and the County of Los Angeles Public Works Department.

The drainage area that will be covered is shown below.


For more information, visit the City of Santa Monica’s Environmental Program’s web site, or download the Project Description document in PDF.