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The Water Division is responsible for the operation, maintenance, and improvement of the municipal water system serving more than 85,000 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.  

Click for latest EARTHQUAKE STATUS REPORT including water supply advisories.

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.


sow logo smallThe Governor has declared a Drought State of Emergency, encouraging all Californians to take personal actions to reduce water usage.  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.  Customers are urged to limit lawn watering to early morning two days per week.  The State Water Board has approved statewide emergency regulations to increase water conservation and the City is required to enforce local prohibitons on water waste:



REPORT WATER WASTE:  Call 707-257-9521 or This e-mail address is being protected from spambots. You need JavaScript enabled to view it


HYDRANT FLUSHING:  Due to ongoing drought conditions, the City is deferring the full hydrant flushing program that was planned for 2014.  This program is important in maintaining water quality however, and it will be resumed when conditions permit.  Affected areas will be notified, and all efforts will be made to minimize water used.  

Current News    

  • Crews are addressing earthquake-related water main breaks and water outages as quickly as possible.  Visit City web site front page for latest Earthquake status report.
  • The City of Napa is enforcing Emergency Drought Regulations as required by the State Water Board.
  • Smart Rebates for commercial customers are back!  Generous incentives on high-efficiency commercial clothes washers, toilets, urinals, and waterbrooms.
  • The City is offering a $500 Green Business Stipend, courtesy of the Water and Recycling Divisions.
  • Primitive Boat Launching Facility at Lake Hennessey is open.  Repairs to original dock are expected later in 2014.  No body contact with water.  No paddleboards.

Click the following links for details on specific Water Division topics: waterhq.jpg

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.