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Sanitary District No. 5 of Marin County
P.O. BOX 227
Tiburon, CA 94920

 Sanitary District No. 5 of Marin County is located on the San Francisco Bay in the Town of Tiburon, ten miles north and east of the Golden Gate Bridge.

Sewer Emergencies

24 Hours

(415) 779-9048

Dial 9-1-1 if public health or property is threatened.

Our Mission

Sanitary District No.5 of Marin County is a special District, which while meeting or exceeding all applicable local, state and federal laws and regulations, is dedicated to the protection of public health and the environment through effective and economical collection, conveyance, treatment and disposal of wastewater.