Service

Backflow Testing & Repair in Houston

Certified testing and repair for backflow prevention assemblies.

Texas requires annual testing of backflow prevention assemblies on irrigation systems connected to a public water supply. We test, complete the paperwork, submit it to your water authority, and repair or rebuild assemblies that fail.

Signs you need this service

  • Annual test notice from your city or MUD
  • Water weeping from the relief port
  • Assembly froze during a hard winter
  • You just bought the home and have no test record

How we handle it

  1. 1 Certified test with calibrated gauge
  2. 2 Rebuild check valves and relief valves if the test fails
  3. 3 Retest and document the result
  4. 4 File the report with your local water authority

Where we handle this most

Backflow Testing & Repair in Houston City of Houston requires an annual test on record for every system tied to the public supply. Backflow Testing & Repair in Katy Katy's MUD districts send annual test notices and want the paperwork filed on time. Backflow Testing & Repair in League City The city tracks annual assembly tests for every irrigation meter. Backflow Testing & Repair in Stafford Mixed commercial and residential meters in Stafford are on strict annual test cycles. Backflow Testing & Repair in La Porte Corroded assemblies frequently fail their annual test here. Backflow Testing & Repair in Texas City Corrosion-prone assemblies need their annual test taken seriously here.

Available across the metro

We provide backflow testing & repair throughout Houston and the surrounding communities, including Houston, Katy, Sugar Land, Cypress, The Woodlands, Spring, Tomball, Pearland, Friendswood, League City, and more.

View all service areas

Guides about Backflow Testing & Repair

March 10, 2025

Backflow Testing Rules Houston Homeowners Should Know

Backflow Testing Rules Houston Homeowners Should Know Practical Houston backflow testing guidance: diagnosis order, clay-soil notes, and when to call a ...

June 5, 2025

Freeze-Damaged Backflow Assemblies on Gulf Coast Homes

Freeze-Damaged Backflow Assemblies on Gulf Coast Homes Practical Houston backflow testing guidance: diagnosis order, clay-soil notes, and when to call a...

June 8, 2025

RPZ vs Double-Check Backflow Assemblies for Irrigation

RPZ vs Double-Check Backflow Assemblies for Irrigation Practical Houston backflow testing guidance: diagnosis order, clay-soil notes, and when to call a...

What customers say about our work

4.9 average from 12 customer reviews
“Two zones had quit on us and another company told us the whole manifold had to be replaced. The tech from Reliable traced it to a bad solenoid and a nicked wire, fixed both, and ran every zone with me before he left. Straight answers the whole way through.”
Marcus D. Katy, TX · Valve Repair & Replacement · June 9, 2026
“Our water bill nearly doubled and we could not find the cause. They located a cracked lateral under the side yard in about forty minutes, repaired it, and put the sod back so neatly you cannot tell where they dug.”
Priya S. Sugar Land, TX · Leak Detection & Repair · May 28, 2026
“Eleven heads replaced and every arc reset. The shade zones under the oaks were drowning and the sunny strip was burning up — they rebalanced the whole thing and the lawn evened out within two weeks.”
Bill R. The Woodlands, TX · Sprinkler Head Replacement · May 14, 2026

Need backflow testing & repair?

Talk to a Houston-based technician about what your system is doing — we diagnose before we dig.

(832) 639-6777