Backflow / Cross Connection

Peback flow 2r Federal and State Law Carmichael Water District has implemented a program to set rules and procedures to eliminate, monitor, protect, and prevent cross-connections in the public water supply. A cross- connection is an unprotected actual or potential connection between a potable water system used to supply water for drinking purposes and any source or system containing unapproved water or substance that is not or cannot be approved as safe, wholesome, and potable.


Backflow is thbackflow 4e undesirable reversal of the flow of potentially contaminated water into the potable water supply. The two types of backflow are backpressure and back siphonage. Backflow can be prevented by the installation of an Air Gap or an approved backflow prevention assembly installed on the service line. Through surveys and inspections, Carmichael Water District will determine which properties are required to install backflow prevention assemblies. If an installation is required you will receive a letter outlining the steps you need to take to be in compliance.


For more information about the Cross Connection Control Policy Handbook requirements please click here.

  1. Who can install a backflow prevention assembly?
  2. How do I know if I need a backflow prevention assembly?
  3. Where should a backflow prevention assembly be located?
  4. Do backflow prevention assemblies need to be tested?
  5. Who can test my backflow prevention assembly?
  6. What will it cost to have my backflow prevention assembly tested?
  7. Are backflow prevention assemblies subject to freezing?
View All