Backflow Testing & Prevention in Boise & Treasure Valley
Annual backflow preventer testing, certification, and installation for irrigation systems, fire suppression, and commercial properties. We test, repair, and install RPZ (Reduced Pressure Zone) and DC (Double Check) backflow assemblies to keep your drinking water safe and your property code-compliant.
Idaho code requires backflow preventers on all irrigation systems connected to potable water — and the City of Boise and United Water Idaho require annual testing and certification. Most Boise homes with in-ground sprinkler systems need a backflow device tested every spring before turning on the irrigation.
What's Included
- ✓ Annual backflow preventer testing
- ✓ Certification and compliance reporting to the city
- ✓ Backflow preventer installation (RPZ or DC)
- ✓ Repair of failed assemblies
- ✓ Spring startup testing for irrigation systems
When Do You Need Backflow Testing & Prevention?
Every spring before turning on your irrigation system, when you receive a notice from the City of Boise or United Water requiring a backflow test, when installing a new irrigation system, or when a fire suppression system requires annual testing.
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Call (208) 555-0199 — Free EstimateOur Backflow Testing & Prevention Process
We connect our test kit to the test ports on your backflow preventer and run a series of pressure tests to verify it prevents reverse flow. If it passes, we sign the certification form and submit it to the city. If it fails, we diagnose and repair the faulty check valve, relief valve, or seal — then retest. For new installations, we size and install the correct assembly based on the application.
Backflow Testing & Prevention Cost in Boise
Typical backflow testing & prevention costs in the Boise area: $75-$200 for testing, $200-$800 for preventer installation. We provide upfront pricing before starting any work.
Cost factors: Type of test (residential irrigation vs commercial fire suppression), assembly type (RPZ vs DC — RPZ is more expensive but required for higher-risk applications), repair needs if the test fails, and whether the assembly is easily accessible.
Backflow Testing & Prevention Considerations for Boise Homes
The City of Boise requires annual backflow testing for all irrigation systems connected to the municipal water supply. United Water Idaho has the same requirement. Test reports must be submitted by a certified tester — we handle the paperwork. Most testing is done in April-May before irrigation season begins. Failure to test can result in water service disconnection.
Frequently Asked Questions
Do I need backflow testing in Boise?
If you have an in-ground irrigation system connected to city water, yes. The City of Boise and United Water Idaho require annual testing and certification. You'll typically receive a notice in spring reminding you to schedule the test.
What happens if my backflow test fails?
We repair the failed component on the spot (usually a check valve or relief valve) and retest. Most repairs are under $150. The backflow preventer must pass before we can certify it.
When should I schedule backflow testing?
Schedule in April or early May, before you turn on your irrigation for the season. This ensures your backflow preventer is working properly before water flows through the system and gives time for any repairs before peak watering season.
What's the difference between RPZ and DC backflow preventers?
A Double Check (DC) assembly provides basic protection for low-risk applications like residential irrigation. A Reduced Pressure Zone (RPZ) assembly provides the highest level of protection and is required for commercial systems, fire suppression, and any high-risk application where contamination could affect public health.
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Serving All Treasure Valley Communities
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