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Central Marin Sanitation Agency
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CMSA provides contractual services to several local agencies in Marin County for a variety of wastewater related services. These arrangements benefit both the local agencies and CMSA. For the local agency, it is more cost-effective to utilize CMSA staff expertise and resources than hiring contractors or consultants. For CMSA, the revenues incrementally reduce the amount of wastewater service fees charged to our customers.


San Quentin State Prison

CMSA has had a wastewater service agreement with the California Department of Corrections since 2012. Services include operating and maintaining SQSP’s main pump station and forcemain to transport wastewater to CMSA’s treatment plant, and treating and disposing of the prison property’s wastewater and biosolids. 

San Quentin Village Sewer Maintenance District

CMSA and the County of Marin entered into a service agreement in 2012 for the operation and maintenance of the District’s 1,500’ gravity collection system and pump station.

Sanitary District No. 2 of Marin Pump Station Maintenance

CMSA has had a service agreement with Sanitary District No. 2 since April 1985, under which CMSA operates and maintains SD2’s nineteen pump stations and provides limited maintenance to the District’s forcemains.

FOG (Fats, Oils and Grease) Source Control Programs

CMSA has served in a consultative capacity to assist local wastewater agencies in the development and implementation of FOG source control programs within their jurisdictions. These include programs for the Las Gallinas Valley Sanitary District, San Rafael Sanitation District, Ross Valley Sanitary District, Sanitary District #2 of Marin County, Tamalpais Community Services District, and Almonte Sanitary District in Southern Marin.

Mercury Reduction Programs

Novato Sanitary District and Las Gallinas Valley Sanitary District have contracted with CMSA to administer dental amalgam programs in their respective service areas. The programs are similar to the program implemented at CMSA that has been recognized for our outreach, annual compliance inspections, and comprehensive record keeping. 



1301 Andersen Drive, San Rafael, CA 94901
Phone: 415-459-1455 / 415-223-7793
Fax: 415-459-3971


8:00 am - 4:00 pm  Monday - Thursday
8:00 am - 3:00 pm  Friday


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