The Sacramento Regional County Sanitation District’s EchoWater Project is the largest public works construction project taking place in the region, and is one of the largest ever in the region’s history. This project will upgrade Regional San’s wastewater treatment plant and improve water quality in the Sacramento River. Regional San provides wastewater conveyance and treatment services to residential, industrial and commercial customers throughout the Sacramento Region, including Folsom. The EchoWater Project must be fully complete and operational by 2023. Learn more in the annual EchoWater Project Customer Update.