In order to ensure public health and protect the environment, CMSA requires that certain customers apply for permits. One purpose is to prevent industrial and hazardous waste from being discharged into the treatment plant.

The CMSA service area is Fairfax, Ross, San Anselmo, Greenbrae, Kentfield, Larkspur, Corte Madera, and areas of San Rafael south of the Santa Venetia ridge (Terra Linda and Civic Center are not in our service area).

More details about permits can be found below.

Type of Waste or Activity	Comments	Files to Download
Industrial discharge into sewers	Usually need a permit	Permit application
Auto repair facility discharge into sewers	Engine, body, radiator, car wash, corp yard, fleet service - all need permit	Permit requirements  Permit application
Photoprocessor, printer discharge into sewers	No permit required- comply with photoprocessing waste BMP	Photoprocessing waste BMP
Septic tank, portable toilet, and grease trap wastes from certain parts of Marin County may be discharged at CMSA.	1) Hauled waste policies letter specifies area from which each type of waste will be accepted 2) No permit required, call contact number above to be placed on list of approved haulers	Hauled waste policies letter
CMSA accepts discharge of contaminated groundwater, provided that it is generated in the CMSA service area and it meets discharge limits.	Permit required	Permit application
Mobile cleaning operations, other small impact discharges at the treatment plant	Permit application, if approved and returned, is discharge permit	Permit application

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