NapaSan Events and Tours

NapaSan Open House

Stay tuned for details about NapaSan’s 2021 Open House!

The NapaSan Open House is an annual event that features treatment plant tours, laboratory visits, bird walks, crafts and games for kids, large equipment demonstrations, and refreshments.

For more information, call Stephanie at (707)258-6002.


Adults and Children looking at computer screens
Child behind cutoff
People standing in line

NapaSan Monthly Tours


Please note- Until further notice, all tours of NapaSan’s facility are canceled.  


Join NapaSan staff on the third Thursday of every month at 2pm to take a tour of the facility and learn about the wastewater treatment process!  No reservation necessary- just drop by and join us! Tours are roughly one hour in length.  For more information, call (707)258-6002.