Koetter Fire Protection
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.4 (39 reviews) 2 certified testersOn City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Backflow testing in Dallas, TX
63 backflow testing businesses work within 25 miles of Dallas, 12 of them based in town. Every one is on the approved tester list of 5 water utilities.
63 businesses within 25 miles
1 for-hire testers based in Dallas
Backflow testing companies near Dallas
Allied Fire Protection
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.2 (16 reviews) 6 certified testersOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Firetrol Protection
100/100 ✓ TX Utility-Approved Tester Verified ★ 4 (15 reviews) 3 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
American Fire Protection Group
100/100 ✓ TX Utility-Approved Tester Verified ★ 3.8 (14 reviews) 17 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
United Mechanical
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.4 (50 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Harlen Johnson HVAC, Plumbi
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.8 (1209 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dynamic Systems
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.8 (43 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Fire Safety Solutions Inc
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.3 (11 reviews) On City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Central Fire Protection
90/100 ✓ TX Utility-Approved Tester Verified ★ 3.9 (14 reviews) On City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Denali Construction Service
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.3 (48 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Modern Mechanical Services
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.7 (12 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Brandt Companies
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.3 (87 reviews) On City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
A & A Active Backflow
90/100 ✓ TX Utility-Approved Tester Verified ★ 5 (10 reviews) On City of Garland list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Evolution Mechanical
90/100 ✓ TX Utility-Approved Tester Verified ★ 2.6 (22 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Diamond Scenery
90/100 ✓ TX Utility-Approved Tester Verified ★ 4.8 (31 reviews) On City of Garland list Backflow Testing
Verified Oct 2026 · Unclaimed listing
A Trust Backflow
90/100 ✓ TX Utility-Approved Tester Verified 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Eagle One Fire Systems
90/100 ✓ TX Utility-Approved Tester Verified ★ 5 (132 reviews) On City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
SFS Security Fire Systems
90/100 ✓ TX Utility-Approved Tester Verified ★ 3.8 (16 reviews) On City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Great Southwest Fire
80/100 ✓ TX Utility-Approved Tester Verified ★ 2.9 (20 reviews) On City of Plano list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Automatic Fire Protection
100/100 ✓ TX Utility-Approved Tester Verified ★ 3.5 (8 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dyna Ten
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.3 (36 reviews) 2 certified testersOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
DFS Fire Systems
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.3 (64 reviews) 2 certified testersOn City of Garland list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Summit Fire & Security
100/100 ✓ TX Utility-Approved Tester Verified 3 certified testersOn City of Garland list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Ranger Fire
100/100 ✓ TX Utility-Approved Tester Verified ★ 3.9 (11 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Saving Grace Plumbing
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.7 (1132 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Automatic Sprinkler of Texas
100/100 ✓ TX Utility-Approved Tester Verified ★ 3.4 (10 reviews) 2 certified testersOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Kodiak Fire Protection
100/100 ✓ TX Utility-Approved Tester Verified ★ 3.7 (26 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Blaze X Sprinkler Corp
100/100 ✓ TX Utility-Approved Tester Verified 3 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Elyon Fire and Life Safety
100/100 ✓ TX Utility-Approved Tester Verified ★ 4.9 (224 reviews) 2 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Lux Texas Landscaping
100/100 ✓ TX Utility-Approved Tester Verified ★ 5 (204 reviews) 2 certified testersOn City of Grand Prairie list Backflow Testing
Verified Oct 2026 · Unclaimed listing
Dallas Water Utilities: backflow test rules
- Who must test. Under Dallas City Code Chapter 49, Section 29 and 30 TAC 290.44, high-hazard backflow prevention assemblies need annual testing by a licensed tester registered with the City of Dallas. Source.
- Notices and deadlines. DWU sends notification letters to locations with high-hazard devices due for testing; if a device fails, the owner has 30 days to have it repaired and retested. Source.
- How the report is filed. Owners ask their tester to upload the test form to the City of Dallas through the SwiftComply online portal (www.bftester.com/dallastx). Source.
- Tester registration. Every backflow assembly tester must be registered with the City of Dallas Building Inspection office and enrolled with SwiftComply; enrolment requires the tester's certification and test kit information. Source.
- Fees. Original registration requires appearing in person at 320 E Jefferson Blvd. with the form, the state pocket licence, photo ID and $120; renewals also cost $120, and registration expires each year with the state licence. Amendments carry a $30 record change fee. Source.
Independent certified testers based in Dallas
Testers Texas's roster lists without a company. Names, certificate numbers and phones as the state publishes them.
| Town | Tester | Certificate | Phone |
|---|---|---|---|
| Dallas | Giuseppe Baldi-Castro | BP0021200 | (469) 781-3558 |
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 in Dallas 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
Backflow testing questions in Dallas
Who can test a backflow preventer in Dallas?
A tester certified by Texas Commission on Environmental Quality. Your water utility may also keep its own list of testers allowed to file reports. In Dallas, see Dallas Water Utilities's rules below.
How many certified backflow testers are based in Dallas?
1 testers who test for the public list Dallas as their base on Texas's roster, and 63 testing businesses are within 25 miles.
How often do I need a backflow test?
Most utilities require a test when the assembly is installed and then every year. Your utility's notice gives the due date and how the tester files the report.
Roster: Texas Commission on Environmental Quality, read October 6, 2026.
Approved list: Backflow Tester Company List, City of Houston.
Approved list: City of Plano registered backflow testers, City of Plano Utility Operations.
Approved list: City of Grand Prairie registered backflow testers, City of Grand Prairie.
Approved list: City of Garland registered backflow testers, City of Garland.
Approved list: City of Round Rock registered backflow testers, City of Round Rock Utilities and Environmental Services.
Approved list: McAllen Public Utility certified backflow testers, McAllen Public Utility.
Approved list: City of Saginaw backflow tester list, City of Saginaw Environmental Services.
Approved list: Brownsville PUB cross connection control and backflow prevention testers, Brownsville Public Utilities Board.
Approved list: City of Laredo local registered backflow prevention assembly testers, City of Laredo Utilities.
Approved list: City of Plano registered backflow testers who test without a water shutoff, City of Plano Utility Operations.
Keep looking
- Carrollton, TX(5 mi)
- Irving, TX(7 mi)
- Garland, TX(12 mi)
- Plano, TX(13 mi)
- Grand Prairie, TX(14 mi)
- Duncanville, TX(18 mi)
- Allen, TX(18 mi)
- Wylie, TX(20 mi)
- Arlington, TX(20 mi)
- Rockwall, TX(25 mi)