Backflow is defined as the undesired reverse flow of used water back into the public water supply. The City of North Las Vegas Backflow Prevention Program ensures that the potable water system is protected in the event of a backflow condition.

Backflow prevention devices are required on all industrial and commercial properties and many multi-family units. 

Backflow Ordinance 1125 

For more information, contact the Utilities Department at backflowprogram@cityofnorthlasvegas.com or (702) 633-1275.

Annual Inspection

The City of North Las Vegas requires the testing of backflow prevention devices on an annual basis. When a device becomes due for its annual inspection, a letter will be sent to the water billing account holder to notify them of this requirement. Devices must be tested by an approved backflow testing company with results submitted to the City by the testing company.

The Annual Backflow List is available upon emailed request. 

Backflow Retrofit and Upgrades

All water services that do not currently have service protection backflow assemblies are required to come into compliance upon written notification.  All services with previously approved Double Check Detector Assemblies (DCDA), single-check devices, or Pressure Vacuum Breakers (PVB) must be upgraded upon written notification. Please note that a permit will be required before install or upgrade.

For more information on obtaining a permit, please contact Public Works, Development and Flood Control at (702) 633-1200.

Uniform Design and Construction Standards for Potable Water Systems (UDACS-2025)

Uniform Design and Construction Standards for Potable Water Systems - CNLV Addenda

For Backflow Testers

See the requirements to become an approved backflow testing company.

The City of North Las Vegas uses Tokay Web Test for all backflow report submittals. Backflow reports are not be accepted by email, fax or in person.

Tokay Web Test user guide