Water Quality Report

By July 1 each year the City provides its water customers with a summary of any contaminants detected for the previous calendar year. Also referred to as the Consumer Confidence Report (CCR), the annual Drinking Water Quality Report is a key part of the public's right-to-know as established in the Safe Drinking Water Act. The primary purpose of the report is to provide detailed information regarding contaminants, related potential adverse health effects, and possible sources of contamination. Additional report sections describe our source waters, the importance of protecting our watersheds, and specific water quality concerns some customers may have.

2020 AQR Cover Page

The 2020 Drinking Water Quality Report (PDF) is here.
(Aqui en Espanol)

Please call 707-257-9521 to request mailing of paper copies if needed. Paper copies may be picked up at the Utilities Department, 1700 Second Street, Suite 100 or at the Finance-Collections windows in City Hall, 955 School Street. 

The City’s drinking water met all Federal and State standards in 2020. The City of Napa analyzes hundreds of constituents, but only those constituents that are detected in the City’s drinking water are listed in the Drinking Water Quality Report.  If you have any specific questions after reading the 2020 Drinking Water Quality Report, please call the Water Quality Manager at 707-253-0822 or Email the Water Quality Manager.

Past Reports

  1. 2019 Drinking Water Quality Report (PDF)
  2. 2018 Drinking Water Quality Report (PDF)
  3. 2017 Drinking Water Quality Report (PDF)
  4. 2016 Drinking Water Quality Report (PDF)
  5. 2015 Drinking Water Quality Report (PDF)
  6. 2014 Drinking Water Quality Report (PDF)
  7. 2013 Drinking Water Quality Report (PDF)
  8. 2012 Drinking Water Quality Report (PDF)