Central Marin Sanitation Agency


Individual and group public tours of CMSA facilities are available upon request. Tours are ADA compliant, and offer a firsthand look at how wastewater is treated, recycled and safely discharged into the bay environment.
Please call 415-459-1455 to schedule and arrange your visit.


Students view the treated water as it courses through the Chlorine Contact Tanks.

Students are led through the underground gallery to see the extensive pipe network.







Students view the microorganisms (activated sludge) that treat the water.