In November 2020, NapaSan celebrated 75 years of service to the community. The timeline below was created to show the dramatic changes that have taken place since voters chose to establish NapaSan in 1945. From a set of sewage treatment ponds constructed to treat and dispose of wastewater to a state of the art resource recovery facility, NapaSan has come a long way. Check out the timeline below to see NapaSan's progress and imagine what the next 75 years will bring!