For more information about the current drought, click here.

North Marin Water District Logo
  • Contact
  • Español
  • Home
  • Account
    • Pay Bill Online
    • My Water Usage
    • Annual Cost Calculator
    • Update Account Info
    • Start Service
    • Stop Service
    • Rates
    • Low-Income Rate Assistance (LIRA) Program
    • Bill Adjustment Form
    • FAQs
  • Your Water
    • Novato Water
    • West Marin Water
    • Oceana Marin Sewer
    • Water Quality
    • Recycled Water
    • Backflow Prevention
    • Laboratory Services
  • Save Water
    • Indoors
    • Outdoors
    • Business Tips
    • Water Waste Report
    • Drought is Here
    • New Water Supplies
  • About
    • About NMWD
    • Board of Directors
    • NMWD Documents
    • History
    • 2019 By-Division Election System
    • 2022 Redistricting
    • Regulations
    • FAQs
  • News
    • News
    • Waterline Newsletter
  • Search

Backflow Prevention and Cross Connection Control

NMWD approved Backflow Tester List 2022

Above Grade Backflow Preventer Installation Std 19

In order to protect the water delivered to customers from contamination in the distribution system, NMWD has a comprehensive Cross Connection Control and Backflow Prevention program.

The aim of the program is to make sure that – for example – untreated water from a well, chemicals stored in tanks, or other liquids and contaminants do not enter into our water system through a customer’s plumbing.

NMWD staff identify areas or properties where risks might exist, categorize those risks, and apply the appropriate devices to reduce or eliminate risk.

You may need to have your property evaluated and have the proper device installed if you have any of the following on your property:

• A well-used for irrigation
• A pool
• A large storage tank
• Dock side water facilities

Commercial and industrial facilities which pump fluids under pressure or those that contain any amounts of hazardous materials, as well as medical offices, are among those that are required to have a cross connection control device installed at the meter.

More on NMWD’s cross connection control programs can be found here: Regulation 06.

In This Section

Novato Water

West Marin Water

Oceana Marin Sewer

Water Quality

Recycled Water

Backflow Prevention

Laboratory Services

Regulations

Read More

Standard Specifications

Standard Drawings

fb yt insta home-2 tw
  • Business
    • Request for Proposals (RFP) and Notice Inviting Bids (NIB)
    • Engineering Services
    • Recycled Water Truck Program
    • Standard Drawings
    • Standard Specifications
    • Current Projects
  • Careers
    • Employment Opportunities
    • Human Resources
  • Media & Downloads
    • Press Contacts
    • Brand Files
  • Meetings
    • Agendas & Minutes
    • Calendar

© 2022 North Marin Water District, PO Box 146, Novato, CA 94948-0146

  • Privacy Policy

Site by Kiosk