Wastewater & Recycled Water

The primary goal of this division is to treat the wastewater generated by the Town of Yountville including the California Veterans Home to high quality that can be beneficially reused for irrigation purposes. After treatment, nearly 70% of the total annual effluent is used to irrigate five vineyards and one golf course. This is achieved through a distribution pipeline that extends 5.5 miles to the celebrated Silverado Trail.

Promoting the use of recycled water allows for the prudent saving of groundwater for potable use during extreme drought conditions. The recycled water that is not beneficially reused is discharged to the Napa River under strict regulations through a National Pollutant Discharge Elimination System (NPDES) Permit issued by the CA State Water Resources Control Board. View the Agreement for Construction and Operation of a Joint Wastewater Treatment Facility (PDF).

Sanitary Sewer System MaintenanceSanitary Sewer System

The sanitary sewer collection system is comprised of a nine-mile network of underground pipelines. Wastewater flows by gravity to a sewer pump station and is then pumped to the Yountville Wastewater Reclamation Facility (WRF). The collection system is cleaned annually by use of a Vactor Hydro Truck purchased in 2004. The WRF is staffed seven days per week by four California certified wastewater treatment operators.

In addition to the above duties, this division also operates and maintains the Floodwall Pump Station and Retention Basin. View the following PowerPoint presentation for a visual tour of the Yountville water and wastewater systems.

Sewer Management Plan

On April 20, 2010, the Town Council adopted the Sewer System Management Plan, which includes the "Sewer Backup Prevention and Response Policy". This policy lists procedures that staff will follow for inspections, mitigating incidents, and reporting sanitary sewer system overflows, backflows and backups. Town staff is required to audit the SSMP every two years. The following documents is a result of the most recent audit:

The following file is the 2019 Annual Report for the Wastewater Reclamation Facility (WRF) that was submitted to the Regional Water Quality Control Board (RWQCB). Town staff operates the WRF in compliance with the National Pollutant Discharge Elimination System Permit that was issued by the RWQCB. The Report describes improvements, testing results, and other information about operations at the WRF. View the 2019 Annual Report for the Yountville Wastewater Reclamation Facility (PDF).

The Yountville Wastewater Reclamation Facility is located at 7501 Solano Avenue in Yountville, CA. Any questions or problems regarding the previously mentioned facilities can be emailed to Don Moore - Utility Operations Manager and call 707-944-2988.