Formed in 1950, the Sausalito-Marin City Sanitary District provides sewage collection, treatment and disposal to Sausalito and the unincorporated area of Marin City, as well as to Fort Baker and the Tamalpias Community Services District.

History -

In the past 50 years, we've come a long way!

The original facility consisted of a primary treatment plant and a system of pump stations and lines, adding a sludge dewatering facility around 1974.

In 1987, a major upgrade occurred. Secondary treatment was added with fixed film reactors on top of new secondary sedimentation tanks, and two contact tanks were added which dramatically improved the plants chlorination/dechlorination process. A sludge thickener and secondary digester were also added to better manage the flow of solids. These upgrades improved the plants capacity while meeting stricter discharge regulations.

In 1992, the addition of four sand filters was instrumental in reducing the Parts Per Million counts in our discharge water. Since that time, several smaller efficiency and upgrade changes have occurred, including upgrading electrical equipment and pump stations. Process efficiencies have been added to existing facilities based on advances in technology, like the new mixing system that is being added to the primary digester.

Please visit our New Construction page to see the exciting changes that are happening right now!

Focused, Efficient Local Agency

Our Board of Directors is elected by residents who live within the service area. The Board, made up of customers of the district, is directly accessible and accountable to its constituents.

As a local independent special district authorized by state law, we focus all of our attention on providing excellent wastewater collection, treatment and disposal services to the community.

Our full-time staff provides friendly and responsive service, seven days a week, around-the-clock. We respond to customer calls promptly, maintain simple procedures for issuing permits, and cooperate with many other local, state and federal agencies.