BackflowNear Test-Due Reminder

Backflow testing in Fenton, MO

122 backflow testing businesses work within 25 miles of Fenton, 6 of them based in town. Every one has testers on Missouri's certified backflow tester roster.

122 businesses within 25 miles
49 for-hire testers based in Fenton

Certified backflow testers near Fenton

What the badges mean
✓ MO Certified Backflow Tester Verified
A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

The Waldinger Corp

100/100
✓ MO Certified Backflow Tester Verified #13-7292 9 certified testers Backflow Testing

2066 Fenton Logistics Pk Blvd, Fenton, MO 63026 · under 1 mile from Fenton

Call (314) 371-1000 Details Website

Verified Oct 2026 · Unclaimed listing

Lawn Systems, Inc.

100/100
✓ MO Certified Backflow Tester Verified #34-10124 ★ 4.8 (255 reviews) 15 certified testers Backflow Testing

2260 Cassens Dr, Fenton, MO 63026 · under 1 mile from Fenton

Call (636) 349-6640 Details Website

Verified Oct 2026 · Unclaimed listing

Lawn Masters Inc

100/100
✓ MO Certified Backflow Tester Verified #34-8475 ★ 4.6 (212 reviews) 2 certified testers Backflow Testing

709 Glover Ave, Valley Park, MO 63088 · 2 mi from Fenton

Call (636) 230-0700 Details Website

Verified Oct 2026 · Unclaimed listing

OJ Laughlin

100/100
✓ MO Certified Backflow Tester Verified #06-9600 ★ 4.1 (55 reviews) 13 certified testers Backflow Testing

300 St Louis Ave, Valley Park, MO 63088 · 2 mi from Fenton

Call (636) 225-0992 Details Website

Verified Oct 2026 · Unclaimed listing

Pro Outdoor

100/100
✓ MO Certified Backflow Tester Verified #34-13872 ★ 4.9 (814 reviews) 7 certified testers Backflow Testing

12852 Maurer Industrial Dr, Sappington, MO 63127 · 3 mi from Fenton

Call (636) 692-4441 Details Website

Verified Oct 2026 · Unclaimed listing

Merlo Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-9970 ★ 3.6 (56 reviews) 20 certified testers Backflow Testing

11041 Gravois Industrial Ct, St. Louis, MO 63128 · 3 mi from Fenton

Call (314) 843-1000 Details Website

Verified Oct 2026 · Unclaimed listing

Rock Hill Mechanical

100/100
✓ MO Certified Backflow Tester Verified #13-10768 ★ 5 (6 reviews) 7 certified testers Backflow Testing

524 Clark Ave, Kirkwood, MO 63122 · 3 mi from Fenton

Call (314) 966-0600 Details Website

Verified Oct 2026 · Unclaimed listing

Linek Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-10548 ★ 4.7 (162 reviews) 14 certified testers Backflow Testing

24 Kirkham Industrial Ct, Webster Groves, MO 63119 · 6 mi from Fenton

Call (314) 962-0956 Details Website

Verified Oct 2026 · Unclaimed listing

Ideal Landscape Group

100/100
✓ MO Certified Backflow Tester Verified #34-14604 ★ 3.6 (65 reviews) 3 certified testers Backflow Testing

6252 Olsen Rd, St. Louis, MO 63129 · 8 mi from Fenton

Call (314) 892-9500 Details Website

Verified Oct 2026 · Unclaimed listing

Hoffman Brothers

100/100
✓ MO Certified Backflow Tester Verified #32-9608 ★ 4.9 (11981 reviews) 6 certified testers Backflow Testing

1025 Hanley Industrial Ct, Brentwood, MO 63144 · 8 mi from Fenton

Call (314) 664-3011 Details Website

Verified Oct 2026 · Unclaimed listing

Peters Eichler

100/100
✓ MO Certified Backflow Tester Verified #13-8326 ★ 4.1 (7 reviews) 6 certified testers Backflow Testing

3115 Sutton Blvd, St. Louis, MO 63143 · 8 mi from Fenton

Call (314) 647-4023 Details Website

Verified Oct 2026 · Unclaimed listing

Bieg Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-11682 ★ 4.4 (293 reviews) 10 certified testers Backflow Testing

2015 Lemay Ferry Rd, St. Louis, MO 63125 · 8 mi from Fenton

Call (314) 487-4564 Details Website

Verified Oct 2026 · Unclaimed listing

RA Guinner Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-6814 ★ 4.8 (45 reviews) 3 certified testers Backflow Testing

7244 Gravois Ave, St. Louis, MO 63116 · 9 mi from Fenton

Call (314) 752-9850 Details Website

Verified Oct 2026 · Unclaimed listing

Trio Plumbing Co.

100/100
✓ MO Certified Backflow Tester Verified #06-9200 ★ 4 (149 reviews) 4 certified testers Backflow Testing

2138 Hunters Way Ct, Chesterfield, MO 63017 · 9 mi from Fenton

Call (636) 537-4938 Details Website

Verified Oct 2026 · Unclaimed listing

Lemay Plumbing, Inc.

100/100
✓ MO Certified Backflow Tester Verified #06-3403 ★ 4.3 (47 reviews) 2 certified testers Backflow Testing

945 Lemay Ferry Rd, St. Louis, MO 63125 · 9 mi from Fenton

Call (314) 544-1066 Details Website

Verified Oct 2026 · Unclaimed listing

Maplewood Plumbing

100/100
✓ MO Certified Backflow Tester Verified #32-11793 ★ 4.8 (1815 reviews) 2 certified testers Backflow Testing

2725 Watson Rd, St. Louis, MO 63139 · 10 mi from Fenton

Call (314) 645-6350 Details Website

Verified Oct 2026 · Unclaimed listing

Classic Aire Care

100/100
✓ MO Certified Backflow Tester Verified #32-12616 ★ 4.9 (5615 reviews) 2 certified testers Backflow Testing

1276 N Warson Rd, St. Louis, MO 63132 · 10 mi from Fenton

Call (314) 352-1111 Details Website

Verified Oct 2026 · Unclaimed listing

Hydro Dynamics Corp.

100/100
✓ MO Certified Backflow Tester Verified #34-10436 ★ 4.5 (152 reviews) 12 certified testers Backflow Testing

9211 Olive Blvd, Olivette, MO 63132 · 10 mi from Fenton

Call (314) 997-0064 Details Website

Verified Oct 2026 · Unclaimed listing

Vogel

90/100
✓ MO Certified Backflow Tester Verified #13-14833 ★ 4.9 (1061 reviews) Backflow Testing

1642 Manufacturers Dr, Fenton, MO 63026 · under 1 mile from Fenton

Call (314) 408-6068 Details Website

Verified Oct 2026 · Unclaimed listing

Frey Plumbing

90/100
✓ MO Certified Backflow Tester Verified #06-11593 ★ 5 (6 reviews) 3 certified testers Backflow Testing

335 Leffingwell Ave #108, St. Louis, MO 63122 · 3 mi from Fenton

Call (314) 849-7300 Details

Verified Oct 2026 · Unclaimed listing

J.E. Redington

90/100
✓ MO Certified Backflow Tester Verified #32-7693 ★ 4.4 (60 reviews) Backflow Testing

639 Leffingwell Ave, Kirkwood, MO 63122 · 3 mi from Fenton

Call (314) 965-3200 Details Website

Verified Oct 2026 · Unclaimed listing

Beetz Plumbing

90/100
✓ MO Certified Backflow Tester Verified #06-1463 ★ 3.9 (20 reviews) 10 certified testers Backflow Testing

9511 Watson Industrial Park, St. Louis, MO 63126 · 4 mi from Fenton

Call (314) 942-3500 Details

Verified Oct 2026 · Unclaimed listing

Metro guide: Backflow testing in St. Louis: every utility's rules, filing portals and published prices in one place.

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 Fenton 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 Fenton

Who can test a backflow preventer in Fenton?

A tester certified by Missouri Department of Natural Resources. 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 Fenton?

49 testers who test for the public list Fenton as their base on Missouri's roster, and 122 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: Missouri Department of Natural Resources, read October 6, 2026.

Approved list: WaterOne approved backflow testers, WaterOne.

Approved list: City of Nixa certified backflow testers, City of Nixa.

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