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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 (5) vineyards and one (1) 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.

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 (4) California certified wastewater treatment opVactor Cleaning 1-2010 (2)erators.

In addition to the above duties, this division also operates and maintains the Floodwall Pump Station and retention basin and the Household Hazardous Waste Drop-off site located at the WRF/Corporation Yard, 7501 Solano Avenue next to the Fire Station. Yountville residents are encouraged to recycle fluorescent light bulbs household and automotive batteries, used motor oil and antifreeze as well as unwanted latex and oil-based paints at this location where a five-gallon per person limit is allowed. The hours of operation are Monday – Friday 8:00 am – 3:30 pm excluding holidays.

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 document below is a result of the most recent audit.

Sewer System Management Plan 2016

Sewer System Management Audit

The following file is the 2016 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.

 2016 Annual Report for the Yountville Wastewater Reclamation Facility 

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

Click on the following power point presentation for a visual tour of the Yountville water and wastewater systems. 

Link to Powerpoint Slideshow