Find a certified backflow tester near you
Your water utility wants a test report from a state-certified tester, usually every year. Every business here comes from a state certification roster, with how many certified testers it has and when their certificates expire.
or browse: Missouri · Tennessee · Arkansas · Oregon · Utah · Indiana · South Carolina · Texas
- Every listing from a state certification roster
- Certificate expiry dates shown
- Phones checked against Google
- Free for property owners
Certified testers by state
Each state certifies its own testers. These are the official rosters we read, and what they show.
| State | Certified testers | Testing businesses | Roster |
|---|---|---|---|
| Missouri | 3,975 | 346 | Missouri Department of Natural Resources, read October 6, 2026 |
| Tennessee | 4,306 | 364 | Tennessee Department of Environment and Conservation (Fleming Training Center), read October 6, 2026 |
| Arkansas | 915 | individual testers | Arkansas Department of Health, read October 6, 2026 |
| Oregon | 533 | 133 | Oregon Health Authority, read October 6, 2026 |
| Utah | 835 | individual testers | Utah Division of Drinking Water, read October 6, 2026 |
| Indiana | 1,292 | 119 | Indiana Department of Environmental Management, read October 6, 2026 |
| South Carolina | 251 | 2 | South Carolina Department of Environmental Services, read January 20, 2026 |
| Texas | 176 | individual testers | Texas Commission on Environmental Quality, read October 6, 2026 |
Browse by town
141 towns with certified testing businesses, busiest first.
Missouri
49 cities- Maryland Heights97 testers nearby
- Olivette97 testers nearby
- Kirkwood95 testers nearby
- Valley Park92 testers nearby
- Fenton91 testers nearby
- Webster Groves91 testers nearby
- St. Louis89 testers nearby
- Chesterfield88 testers nearby
All 49 Missouri cities
- Arnold
- Blue Springs
- Branson
- Bridgeton
- Cape Fair
- Cape Girardeau
- Columbia
- Earth City
- Eureka
- Grandview
- Hazelwood
- Independence
- Jackson
- Jefferson City
- Joplin
- Kansas City
- Lake St Louis
- Lee's Summit
- Liberty
- Monett
- Nixa
- North Kansas City
- O'Fallon
- Osage Beach
- Pacific
- Parkville
- Platte City
- Pleasant Hill
- Pleasant Valley
- Rogersville
- Rolla
- Sedalia
- Sikeston
- Smithville
- Springfield
- St Charles
- St Clair
- St Joseph
- St Peters
- Washington
- Wentzville
Tennessee
44 cities- Hermitage86 testers nearby
- Cordova79 testers nearby
- Germantown79 testers nearby
- Nashville79 testers nearby
- Old Hickory76 testers nearby
- Bartlett75 testers nearby
- Memphis74 testers nearby
- Madison72 testers nearby
All 44 Tennessee cities
- Antioch
- Arlington
- Blountville
- Bon Aqua
- Brentwood
- Bristol
- Chattanooga
- Clarksville
- Collierville
- Columbia
- Cookeville
- Crossville
- Dyersburg
- Franklin
- Gallatin
- Goodlettsville
- Hendersonville
- Hixson
- Jackson
- Johnson City
- Kingsport
- Knoxville
- La Vergne
- Lawrenceburg
- Lebanon
- Louisville
- Maryville
- Millington
- Mt. Juliet
- Murfreesboro
- Ooltewah
- Paris
- Portland
- Powell
- Signal Mountain
- Smyrna
Oregon
25 citiesIndiana
23 citiesWhy your utility wants a backflow test
A backflow preventer keeps water from your irrigation system, fire line or building from flowing back into the public supply. Valves and springs wear, so water utilities require a certified tester to check testable assemblies, usually once a year, and file the result with them. A missed test can lead to a shutoff notice. Read the guides.
Never miss your annual backflow test
Most water utilities require the backflow assembly on an irrigation, fire or commercial line to be tested every year, and a missed test can mean a shutoff notice. Tell us when yours was last tested and we'll text you a month before it is due, with certified local testers ready to book.
Free. One text before your test is due. No spam, cancel anytime. Privacy