Backflow Prevention & Testing in Palm Desert

What a Backflow Field Test Evaluates

A required field test checks whether the installed device operates as required to protect the drinking water supply. The test must be performed by a certified backflow prevention assembly tester, an individual qualified to test regulated devices.

The compliance process generally addresses:

• Testing schedule: The water purveyor administers the schedule for assemblies covered by its compliance program.
• Assembly performance: Field testing determines whether the installed assembly passes the required operational checks.
• Compliance paperwork: The applicable utility establishes its forms and submission requirements.
• Failed results: An assembly that doesn’t pass requires correction and a passing result before the connection returns to compliance.

Property owners shouldn’t ignore a testing notice or failed result. A water utility may shut off service to a noncompliant connection until the required testing is completed and passed. Because schedules, forms, and procedures depend on the applicable water purveyor, review the property’s notice and confirm its stated requirements.

Coachella Valley Water District Backflow Standards

Properties served by the district must follow its cross-connection control standards when a backflow prevention assembly is required. The correct protection method depends on the degree of hazard associated with the connection.

Methods recognized in district standards include:

• Double check valves
• Reduced pressure principle devices
• Air-gap separation

Higher-hazard uses require stronger protection under district code. For example, a chemical-injected irrigation system requires a reduced pressure principle device because the substance that could enter the potable supply presents a higher hazard.

Placement also affects compliance. District code requires a reduced pressure principle device to be installed 12 to 36 inches above grade, with at least 12 inches of clearance on each side.