NapaSan offers free tours of the Soscol Water Recycling Facility, which offers tertiary wastewater treatment and water recycling. These tours are available to school groups, organizations, service clubs and businesses, or anyone with an interest in wastewater treatment and water quality. Tours can be tailored to suit specific age groups, knowledge, and interest levels. Call 707-258-6002 to schedule a tour for your group. We also offer tours during our annual open house.