Skip to Main Content

Create an Account - Increase your productivity, customize your experience, and engage in information you care about.   

  • Sign In
  1. Government
  2. Services
  3. Residents
  4. Business
  5. How Do I...
Click to Home

Site Tools

  1. Home
  2. My Account
  3. Printer Friendly
  4. Email Page
  5. Contact Us
  6. RSS
  7. Site Map
  8. Translate Page
  9. Notifications
  10. Documents

Share

  1. Facebook
  2. Twitter
  3. Pinterest
  4. Delicious
  5. Blogger
  6. LinkedIn
Go to Site Search
  1. Home
  2. Government
  3. Departments
  4. Utilities Department
  5. Water Division
  6. Water FAQs

Water FAQs

Find answers to Frequently Asked Questions (FAQs) for various drinking water topics. Topics and content are continually added below.

Special Notices

  1. Will PG&E planned power outages affect my water service?
View All
/FAQ.aspx

Disinfection Byproducts/Home Filters

  1. I’ve never heard of disinfection byproducts before, so why am I hearing about this now?
  2. Why do we need to add chlorine to the water?
  3. What is a THM and how is it formed?
  4. How much is a ug/l?
  1. What about other water systems?
  2. What can I do to lower the THMs at my tap?
  3. Are personal home filters effective?
  4. Should I drink bottled water instead?
View All
/FAQ.aspx
  1. Water System
  2. Water Quality
  3. Water Conservation
  4. Water Rates
  5. Backflow Prevention
  6. New Development
  7. Capital Improvement Program
  8. Lake Hennessey Boating & Fishing
  9. Water FAQs
Permits
& Licenses
Agendas
& Minutes
Stay
Notified
Fiscal transparency tool
City Projects
bids
Napa Logo

Contact Us

  1. City Hall
    955 School Street
    Napa, CA 94559
    Phone: 707-257-9500
    Email Us

Popular Links

  1. Elections
  2. Marriage Licenses & Wedding Information
  3. Municipal Code
  4. Trails, Parks & Facilities
  5. Resources for Employees
/QuickLinks.aspx

Using This Site

  1. Home
  2. Site Map
  3. Contact Us
  4. Accessibility
  5. Copyright Notices
  6. Privacy Policy
/QuickLinks.aspx

Social Media

Facebook
Instagram
Twitter
YouTube
Government Websites by CivicPlus
Arrow Left Arrow Right
[]
Slideshow Left Arrow Slideshow Right Arrow