Alto Sanitary District

Alto Sanitary District is a governmental special district responsible for wastewater collection for approximately 1,200 residents in the Alto neighborhood, an unincorporated area of Mill Valley. The District maintains the wastewater collection system that transports sewage from homes and businesses to the Sewerage Agency of Southern Marin (SASM) wastewater treatment plant. Alto Sanitary District is a member agency of SASM and also administers contracts for solid waste, recycling, and related services within the District.

To be eligible for appointment or election to the Alto Sanitary District Board of Directors, an individual must reside and be a registered voter within the District. Marin County Elections identifies residency and registered-voter status as qualifications for sanitary district candidates.

Applications may be obtained from the Clerk of the Board of Supervisors, Room 329, Administration Building, Marin Civic Center (415-473-7331), or access the Application online.