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Central Marin Sanitation Agency
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The Technical Services Department provides full engineering support for the Agency and is responsible for all regulatory compliance activities required by the Agency’s National Pollutant Discharge Elimination System permit.


  • Design small maintenance and capital projects, and oversee the design of larger projects by engineering consulting firms.

  • Manage construction contracts and associated engineering construction records.

  • Assist with operational studies, and energy efficiency and greenhouse gas emission evaluations.

  • Negotiate and administer the Agency’s contracts for employee uniforms, biosolids hauling and reuse, natural gas supply, and procurement of chemicals used in the wastewater and biosolids treatment processes.

  • Chair the Agency’s Capital Improvement Planning Committee which develops, implements, and manages the Agency’s 10-year Capital Improvement Program (CIP).

  • Assist with Underground Service Alert (U.S.A) utility locating services.

  • Under contract with the California Department of Corrections and Rehabilitation to help administer the San Quentin Asset Management Program.



  • Regulate commercial and industrial disposal of wastewater into the collection and treatment systems.

  • Operate an accredited environmental laboratory that performs the majority of routine testing required in the Agency’s NPDES permit and oversees specialized outside analytical testing services.

  • Provide pretreatment program administration services under contract with wastewater and other local agencies in Marin County.

  • Lead the Wastewater Treatment Agencies of Marin County Public Education Program.


 Please click here for the Agency directory.




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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