BackflowNear Test-Due Reminder

Backflow testing in Duncanville, TX

49 backflow testing businesses work within 25 miles of Duncanville, 2 of them based in town. Every one is on the approved tester list of 5 water utilities.

49 businesses within 25 miles

Backflow testing companies near Duncanville

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

1147 S Cedar Ridge Dr, Duncanville, TX 75137 · under 1 mile from Duncanville

Call (972) 298-2772 Details Website

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

1607 Osprey Dr, DeSoto, TX 75115 · 4 mi from Duncanville

Call (972) 228-8222 Details Website

Verified Oct 2026 · Unclaimed listing

One Source Plumbing

90/100
✓ TX Utility-Approved Tester Verified ★ 4.8 (637 reviews) On City of Grand Prairie list Backflow Testing

518 E Hwy 67, Duncanville, TX 75137 · under 1 mile from Duncanville

Call (214) 375-2588 Details Website

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

3111 Dallas Fort Worth Turnpike Ste 100, Dallas, TX 75212 · 9 mi from Duncanville

Call (214) 986-5358 Details Website

Verified Oct 2026 · Unclaimed listing

Polk Mechanical

90/100
✓ TX Utility-Approved Tester Verified ★ 3.9 (64 reviews) On City of Grand Prairie list Backflow Testing

2425 Dillard St, Grand Prairie, TX 75051 · 10 mi from Duncanville

Call (972) 571-3735 Details Website

Verified Oct 2026 · Unclaimed listing

Western States Fire Protection

100/100
✓ TX Utility-Approved Tester Verified ★ 3.3 (12 reviews) 9 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing

220 Westway Pl #150, Arlington, TX 76018 · 12 mi from Duncanville

Call (214) 634-7562 Details Website

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

801 Station Dr Ste 113, Arlington, TX 76015 · 13 mi from Duncanville

Call (817) 953-8061 Details Website

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

4375 Diplomacy Rd, Fort Worth, TX 76155 · 15 mi from Duncanville

Call (817) 616-2200 Details Website

Verified Oct 2026 · Unclaimed listing

Koetter Fire Protection

100/100
✓ TX Utility-Approved Tester Verified ★ 4.4 (39 reviews) 2 certified testersOn City of Plano list Backflow Testing

10351 Olympic Dr, Dallas, TX 75220 · 16 mi from Duncanville

Call (214) 358-3593 Details Website

Verified Oct 2026 · Unclaimed listing

Crisp-Ladew Fire Protection

100/100
✓ TX Utility-Approved Tester Verified ★ 3.9 (7 reviews) 3 certified testersOn City of Garland listOn City of Grand Prairie list Backflow Testing

5201 Saunders Rd, Fort Worth, TX 76119 · 20 mi from Duncanville

Call (817) 572-3663 Details Website

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

3439 Maybeth St, Dallas, TX 75212 · 10 mi from Duncanville

Call (214) 725-4499 Details Website

Verified Oct 2026 · Unclaimed listing

Fire Power Systems

90/100
✓ TX Utility-Approved Tester Verified ★ 4.2 (50 reviews) On City of Plano list Backflow Testing

1171 Ruggles St, Grand Prairie, TX 75050 · 12 mi from Duncanville

Call (972) 647-8172 Details Website

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

3113 Roanoke Dr, Irving, TX 75061 · 14 mi from Duncanville

Call (214) 315-7290 Details

Verified Oct 2026 · Unclaimed listing

Summit Fire & Security

90/100
✓ TX Utility-Approved Tester Verified ★ 3.6 (39 reviews) On City of Grand Prairie list Backflow Testing

1203 S 2nd Ave, Mansfield, TX 76063 · 15 mi from Duncanville

Call (817) 842-1220 Details Website

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

2683 Lombardy Ln, Dallas, TX 75220 · 16 mi from Duncanville

Call (214) 351-7500 Details Website

Verified Oct 2026 · Unclaimed listing

Action Fire Pros

90/100
✓ TX Utility-Approved Tester Verified ★ 4 (20 reviews) On City of Saginaw list Backflow Testing

3709 S Interstate 35 E, Waxahachie, TX 75165 · 19 mi from Duncanville

Call (972) 923-1516 Details Website

Verified Oct 2026 · Unclaimed listing

Pearson Plumbing

90/100
✓ TX Utility-Approved Tester Verified ★ 4 (21 reviews) On City of Plano list Backflow Testing

1000 W Kearney St, Mesquite, TX 75149 · 20 mi from Duncanville

Call (214) 368-4617 Details Website

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

8100 Mesquite Bend Dr, Irving, TX 75063 · 20 mi from Duncanville

Call (469) 930-0270 Details Website

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

310 W Commerce St, Dallas, TX 75208 · 11 mi from Duncanville

Call (214) 653-1100 Details

Verified Oct 2026 · Unclaimed listing

Advanced Aqua Plumbing

80/100
✓ TX Utility-Approved Tester Verified ★ 5 (17 reviews) On City of Plano listOn City of Saginaw list Backflow Testing

1285 N Main St #302, Mansfield, TX 76063 · 15 mi from Duncanville

Call (817) 453-9550 Details

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

10320 Markison Rd, Dallas, TX 75238 · 21 mi from Duncanville

Call (214) 343-9200 Details Website

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

10575 Vista Park Rd, Dallas, TX 75238 · 21 mi from Duncanville

Call (214) 349-2221 Details Website

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

11540 Plano Rd, Dallas, TX 75243 · 22 mi from Duncanville

Call (214) 341-9300 Details Website

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

1000 S Main St #150, Grapevine, TX 76051 · 23 mi from Duncanville

Call (817) 410-9070 Details Website

Verified Oct 2026 · Unclaimed listing

Allied Fire Protection

100/100
✓ TX Utility-Approved Tester Verified ★ 4.2 (16 reviews) 6 certified testersOn City of Grand Prairie list Backflow Testing

3361 Boyington Dr Apt 160, Carrollton, TX 75006 · 23 mi from Duncanville

Call (972) 840-1700 Details Website

Verified Oct 2026 · Unclaimed listing

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 Duncanville and we'll text you a month before it is due, with certified local testers ready to book.

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Backflow testing questions in Duncanville

Who can test a backflow preventer in Duncanville?

A tester certified by Texas Commission on Environmental Quality. Your water utility may also keep its own list of testers allowed to file reports. Check the notice your utility sent.

How many certified backflow testers are based in Duncanville?

Texas's roster lists no for-hire testers based in Duncanville itself, and 49 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.

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