BackflowNear Test-Due Reminder

Backflow testing in Washington, MO

42 backflow testing businesses work within 25 miles of Washington, 4 of them based in town. Every one has testers on Missouri's certified backflow tester roster.

42 businesses within 25 miles
12 for-hire testers based in Washington

Certified backflow testers near Washington

Skouby Brother's Plumbing

90/100
✓ MO Certified Backflow Tester Verified #06-4547 ★ 4.8 (16 reviews) 3 certified testers Backflow Testing

1320 W 5th St C, Washington, MO 63090 · 1 mi from Washington

Call (636) 390-2500 Details

Verified Oct 2026 · Unclaimed listing

Lawn Authority

100/100
✓ MO Certified Backflow Tester Verified #34-10719 ★ 4.8 (104 reviews) 2 certified testers Backflow Testing

2709 Hopewell Rd, Wentzville, MO 63385 · 17 mi from Washington

Call (636) 928-5296 Details Website

Verified Oct 2026 · Unclaimed listing

Pro Outdoor

100/100
✓ MO Certified Backflow Tester Verified #34-12921 ★ 4.7 (756 reviews) 18 certified testers Backflow Testing

304 TCW Ct, Lake St Louis, MO 63367 · 18 mi from Washington

Call (636) 695-7800 Details Website

Verified Oct 2026 · Unclaimed listing

Heggemann Inc

100/100
✓ MO Certified Backflow Tester Verified #06-10900 ★ 4.6 (113 reviews) 13 certified testers Backflow Testing

508 Booneslick Rd, Warrenton, MO 63383 · 19 mi from Washington

Call (636) 456-8524 Details Website

Verified Oct 2026 · Unclaimed listing

Bob's Plumbing Co

90/100
✓ MO Certified Backflow Tester Verified #32-14509 ★ 4.4 (29 reviews) Backflow Testing

487 Pelton Trails, St Clair, MO 63077 · 15 mi from Washington

Call (636) 629-3979 Details Website

Verified Oct 2026 · Unclaimed listing

Shamrock Sewer & Drain

90/100
✓ MO Certified Backflow Tester Verified #06-9202 ★ 4.8 (351 reviews) 2 certified testers Backflow Testing

2084 McNamee Rd, Pacific, MO 63069 · 18 mi from Washington

Call (314) 882-0857 Details Website

Verified Oct 2026 · Unclaimed listing

Pipe Guys

90/100
✓ MO Certified Backflow Tester Verified #32-13204 ★ 5 (20 reviews) Backflow Testing

1072 Wies Industrial Dr, Lake St Louis, MO 63367 · 18 mi from Washington

Call (314) 930-6009 Details Website

Verified Oct 2026 · Unclaimed listing

Superior Service

90/100
✓ MO Certified Backflow Tester Verified #36-12691 ★ 4.9 (2605 reviews) Backflow Testing

101 Stag Industrial Blvd, Lake St Louis, MO 63367 · 19 mi from Washington

Call (314) 209-7500 Details Website

Verified Oct 2026 · Unclaimed listing

Prestige Landscape

90/100
✓ MO Certified Backflow Tester Verified #34-14540 ★ 4.7 (7 reviews) Backflow Testing

108 N Eatherton Rd, Chesterfield, MO 63005 · 20 mi from Washington

Call (636) 375-2221 Details Website

Verified Oct 2026 · Unclaimed listing

Roden Landscaping

90/100
✓ MO Certified Backflow Tester Verified #34-8418 ★ 4.6 (7 reviews) 2 certified testers Backflow Testing

7800 State Rte N, O'Fallon, MO 63368 · 20 mi from Washington

Call (636) 561-3947 Details Website

Verified Oct 2026 · Unclaimed listing

Plumb Wizards

80/100
✓ MO Certified Backflow Tester Verified #32-14512 ★ 4.8 (64 reviews) Backflow Testing

776 St Louis Inn Rd, St Clair, MO 63077 · 15 mi from Washington

Call (636) 364-8465 Details

Verified Oct 2026 · Unclaimed listing

3 Seasons Irrigation

80/100
✓ MO Certified Backflow Tester Verified #34-12361 ★ 4.6 (16 reviews) Backflow Testing

1419 Diehr Road, Wentzville, MO 63385 · 17 mi from Washington

Call (636) 262-8026 Details

Verified Oct 2026 · Unclaimed listing

Best Outdoor LLC

80/100
✓ MO Certified Backflow Tester Verified #34-1701 Backflow Testing

18518 Melrose Rd, Wildwood, MO 63038 · 17 mi from Washington

Call (636) 345-2378 Details

Verified Oct 2026 · Unclaimed listing

Wayne's Plumbing

80/100
✓ MO Certified Backflow Tester Verified #06-8594 Backflow Testing

75 Saybridge Manor Pkwy, Lake St Louis, MO 63367 · 19 mi from Washington

Call (636) 561-1499 Details

Verified Oct 2026 · Unclaimed listing

KCJ Plumbing

80/100
✓ MO Certified Backflow Tester Verified #32-9663 ★ 4.2 (12 reviews) Backflow Testing

810 Top Notch Ln, Eureka, MO 63025 · 20 mi from Washington

Call (314) 229-9895 Details

Verified Oct 2026 · Unclaimed listing

FDF Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-3396 2 certified testers Backflow Testing

320 Cahoon Dr, Eureka, MO 63025 · 21 mi from Washington

Call (636) 492-3220 Details Website

Verified Oct 2026 · Unclaimed listing

E&M Plumbing

100/100
✓ MO Certified Backflow Tester Verified #06-0062 ★ 4.6 (47 reviews) 5 certified testers Backflow Testing

101 Dreyer Ave, Eureka, MO 63025 · 21 mi from Washington

Call (636) 938-1311 Details Website

Verified Oct 2026 · Unclaimed listing

Best Lawn Care

100/100
✓ MO Certified Backflow Tester Verified #34-11683 ★ 4.9 (979 reviews) 3 certified testers Backflow Testing

209 Josephville Rd, Wentzville, MO 63385 · 21 mi from Washington

Call (636) 200-3000 Details Website

Verified Oct 2026 · Unclaimed listing

Chesterfield Irrigation

100/100
✓ MO Certified Backflow Tester Verified #34-10712 ★ 3.5 (33 reviews) 4 certified testers Backflow Testing

727 Spirit of Saint Louis Blvd, Chesterfield, MO 63005 · 21 mi from Washington

Call (636) 537-9795 Details Website

Verified Oct 2026 · Unclaimed listing

Chesterfield Service

100/100
✓ MO Certified Backflow Tester Verified #32-9598 ★ 4.9 (4483 reviews) 2 certified testers Backflow Testing

245 Chesterfield Industrial Blvd, Chesterfield, MO 63005 · 22 mi from Washington

Call (636) 532-5841 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 Washington 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 Washington

Who can test a backflow preventer in Washington?

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 Washington?

12 testers who test for the public list Washington as their base on Missouri's roster, and 42 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.

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