Contact Us

Wastewater Treatment Plant Office Hours: 
Monday to Friday 7:00 am to 4:00 pm

Contact:
Mark Grushayev, Wastewater Treatment Manager 
Sewerage Agency of Southern Marin 
Location: 450 Sycamore Avenue 
Mailing Address: 26 Corte Madera Avenue 
Mill Valley, CA, 94941 

Telephone: (415) 388-2402 
Fax: (415) 381-8128 
Main email: sasm@cityofmillvalley.org