The Water Division is responsible for the operation, maintenance, and improvement of the municipal water system serving more than 86,000 people in the City of Napa and adjacent areas. The Division is dedicated to providing a safe and reliable supply of high-quality drinking water for its residential, commercial, industrial, and institutional customers.
A comprehensive review of the City's water system is contained in the Urban Water Management Plan. The Plan describes and evaluates water supply sources, projected demand, water conservation and water shortage contingency programs, and overall water service reliability through 2035.
SPECIAL NOTICE: The City of Napa Water System is meeting the regulatory standard for Disinfection Byproducts in Drinking Water. If you have previously received a special notice in the mail regarding the presence of disinfection byproducts, specifically trihalomethanes (THMs), that occur from the reaction of chlorine with organic matter in potable water, the Water Division is pleased to report that the running annual averages for all sites are now in compliance, below the new regulatory threshold of 80 parts per billion (ppb).
The Governor first declared a Drought State of Emergency in January 2014, encouraging all Californians to take personal actions to reduce water demand. In 2015, with record low snowpack in the Sierra Nevada mountains, the Governor issued additional Executive Orders mandating statewide reductions in urban water use. Under the adopted regulations, the City of Napa was required to reduce its total water consumption by 20% for the period of June 2015 through May 2016 (compared to 2013 levels). Together, we beat the target, saving 1.2 billion gallons! With improved water supply conditions in Northern California this year, the State Water Board has allowed urban water suppliers to establish conservation standards based on their own local circumstances. As a result of our local Water Supply Reliability Certification, the City is no longer subject to a percentage savings mandate as of June 2016. As we transition back to our long-term water efficiency goals, please visit our Water Conservation section for local water-saving ideas, including generous rebate programs, and get some great tips from the Save Our Water campaign. Keep in mind that the State Water Board has retained statewide regulations to prohibit water waste and the City is enforcing for all customers:
- As of June 2016, Napa is no longer subject to State-mandated percentage-based water savings, due to our Water Supply Reliability Certification. Statewide Water Waste Prohibitions remain in effect.
- Napa beat its State-mandated 20% conservation target for June 2015-May 2016, with 25% water savings.
- Our 2015 Drinking Water Quality Report is available. View the report online to learn about your drinking water and the stringent State and Federal health standards it must meet. Paper copies of the report will be mailed only upon request by calling 707-257-9521. Copies are also available for pick-up at the Water Division, 1340 Clay Street, and at Public Works, 1600 First Street.
- New Water Fee Schedule is in effect as of November 1, 2015.
Click the following links for details on specific Water Division topics:
- Water System Overview
- Water Conservation
- Water Quality and Backflow Prevention
- Water Rates and Fees
- New Water Service Installation
- High Performance Building Regulations
- Water Efficient Landscape Ordinance (WELO)
- Standard Specifications
- Capital Improvement Program
- Lake Hennessey Boating & Fishing
Contact Water Division administrative staff at 707-257-9521. Our downtown Napa headquarters is located at 1340 Clay Street (Clay & Franklin Streets), and is open weekdays 8am to 5pm. For after-hours water emergencies, please call 707-253-4451.