Since it was founded in 1945, NapaSan has helped to protect public health and the Napa River by providing wastewater collection, treatment and disposal, and pollution prevention programs. NapaSan serves approximately 82,000 people in a 21 square mile area that comprises the City of Napa and surrounding unincorporated areas.

Treatment Facility

In order to perform this important community service, NapaSan operates and maintains several facilities.