Irrigation Systems Require Backflow Protection

Backflow regulations are necessary to help prevent contaminates from entering the public water supply through what is known as backflow. Backflow is defined as, “the flow, other than the intended direction of flow of any foreign liquids, gases, or substances into the distribution system of a public water supply.” An approved backflow prevention assembly, certified by the State of Idaho, is designed to properly prevent backflow.

New irrigation systems have been required to install approved backflow prevention assemblies since the early 1990s. Last year, the water department began implementing a comprehensive program to bring all irrigation systems that are not already or improperly protected with a backflow prevention assembly into compliance with the Idaho Rules for Public Drinking Water Systems and Moscow City Code. All irrigation systems, existing or new, must be equipped with an approved backflow prevention assembly and must be inspected and tested annually by a State of Idaho licensed backflow assembly tester. This program will take approximately 24 months to complete.

A street side survey has initiated to locate systems that have inadequate or non-existent backflow protection. A notice requiring corrections to bring these systems into compliance will be sent to the owner(s) of record. A plumbing permit is required before work can begin and must be purchased at the Building Department.

The protection of Moscow’s water supply is of critical importance to both the City of Moscow and its citizens; your cooperation will be greatly appreciated. If you have any questions about your irrigation system, or if you know that your irrigation system is not protected and would like a list of licensed testers who can install the appropriate assembly, please contact Kyle Steele at ksteele@ci.moscow.id.us or by calling (208) 882-3122. If you receive a notice requiring the installation of a backflow prevention assembly and you believe your irrigation system has approved backflow protection or that the notice has been sent in error, please contact me by phone or email as listed above.

Contact Us

  • Engineering Division
    Kevin Lilly - City Engineer
    klilly@ci.moscow.id.us
    208.883.7034
    Paul Mann Building
    221 E. Second Street
    Moscow, Idaho 83843
  • Streets & Fleet Divisions
    Tyler Palmer - Streets/Fleets Manager
    tpalmer@ci.moscow.id.us
    208.883.7097
    650 W. Van Buren
    Moscow, Idaho 83843
  • Water & Wastewater Divisions
    Tom Scallorn - Water/Wastewater
    tscallorn@ci.moscow.id.us
    208.882.3122
    201 N. Main Street
    Moscow, Idaho 83843
  • Wastewater Treatment Plant
    Todd J. Swanstrom - Wastewater Supervisor
    tswanstrom@ci.moscow.id.us
    208.883.7091
    2221 Pullman Road
    Moscow, Idaho 83843