FBT

Backflow Testing Services in Florissant, Missouri

Finding a reliable backflow testing professional in Florissant, Missouri is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 18 backflow testing companies serving Florissant and surrounding communities including Hazelwood, Maryland Heights, Saint Charles.

Whether you need annual backflow testing, RPZ (Reduced Pressure Zone) valve inspection, or cross-connection control services, the providers listed below offer professional testing services for both residential and commercial properties throughout the Florissant area.

Most water authorities in Missouri require annual testing and reporting for all backflow prevention assemblies. A certified backflow tester will inspect your devices, perform the required differential pressure tests, and file compliance reports with your local water authority.

Browse the listings below to compare ratings, read customer reviews, and contact backflow testing professionals near Florissant directly. Use the filters above to narrow results by rating, review count, or specific services like RPZ testing and preventer installation.

Data source: Google Maps. Always verify licensing with your local water authority.

18 listed providers

Services:
MPR Supply Co backflow testing
Testing Verified
7 mi

MPR Supply Co

No reviews yet

Testing Verified · St. Louis, MO · 7 mi

Backflow Testing
Website
Classic Aire Care backflow testing
8 mi

Classic Aire Care

No reviews yet

St. Louis, MO · 8 mi

CommercialEmergency Service
Website
Flow King Rooter backflow testing
9 mi

Flow King Rooter

4.7(94)

Maryland Heights, MO · 9 mi

Preventer InstallationPreventer RepairCommercial
Website
Missouri American Water backflow testing
10 mi

Missouri American Water

1.6(231)

Creve Coeur, MO · 10 mi

Emergency Service
Website
SL
Testing Verified
11 mi

St Louis Backflow Services

3.4(5)

Testing Verified · St. Louis, MO · 11 mi

Backflow Testing
Website
Tony LaMartina Plumbing Co. Inc backflow testing
12 mi

Tony LaMartina Plumbing Co. Inc

No reviews yet

St. Louis, MO · 12 mi

Website
Roto-Rooter Plumbing & Water Cleanup backflow testing
12 mi

Roto-Rooter Plumbing & Water Cleanup

4.8(5,322)

St. Louis, MO · 12 mi

CommercialResidentialEmergency Service
Website
Maplewood Plumbing & Sewer, LLC. backflow testing
Testing Verified
12 mi

Maplewood Plumbing & Sewer, LLC.

No reviews yet

Testing Verified · St. Louis, MO · 12 mi

Backflow TestingPreventer RepairCommercial
Website
Linek Plumbing Company backflow testing
Testing Verified
13 mi

Linek Plumbing Company

No reviews yet

Testing Verified · Webster Groves, MO · 13 mi

Backflow TestingPreventer InstallationPreventer Repair
Website
Signature Plumbing Services St Louis backflow testing
Testing Verified
15 mi

Signature Plumbing Services St Louis

No reviews yet

Testing Verified · Webster Groves, MO · 15 mi

Backflow TestingEmergency ServiceSame Day Service
Website
Lemay Plumbing, Inc. backflow testing
18 mi

Lemay Plumbing, Inc.

4.3(43)

St. Louis, MO · 18 mi

ResidentialEmergency Service
Website
BI
18 mi

Ballwin Irrigation Services

No reviews yet

Ballwin, MO · 18 mi

Preventer RepairEmergency Service
Website
Flow King Rooter Plumbing backflow testing
19 mi

Flow King Rooter Plumbing

4.9(32)

St. Louis, MO · 19 mi

Preventer InstallationPreventer RepairCommercial
Website
Mr. Rooter Plumbing of St. Louis backflow testing
19 mi

Mr. Rooter Plumbing of St. Louis

No reviews yet

Fenton, MO · 19 mi

Emergency Service
Website
Faszold Heating and Cooling backflow testing
19 mi

Faszold Heating and Cooling

No reviews yet

O'Fallon, MO · 19 mi

Commercial
Website
Pro Outdoor - formerly Professional Irrigation Systems - Chesterfield backflow testing
19 mi

Pro Outdoor - formerly Professional Irrigation Systems - Chesterfield

No reviews yet

Chesterfield, MO · 19 mi

Sprinkler Backflow
Website
Pro Outdoor - formerly Professional Irrigation Systems backflow testing
19 mi

Pro Outdoor - formerly Professional Irrigation Systems

No reviews yet

Sunset Hills, MO · 19 mi

Sprinkler Backflow
Website
Merlo Plumbing Co. Inc. backflow testing
Testing Verified
20 mi

Merlo Plumbing Co. Inc.

3.6(54)

Testing Verified · St. Louis, MO · 20 mi

Backflow TestingCommercialEmergency Service
Website

Frequently Asked Questions About Backflow Testing in Florissant

Most jurisdictions in Missouri require backflow testers to hold a current certification from an approved training program, typically involving classroom instruction, a hands-on practical exam, and continuing education credits. Some municipalities maintain their own approved-tester lists. Always verify certification before hiring.

Residential tests typically involve a single PVB or DCVA device and are quicker to complete. Commercial properties in Florissant often have multiple assemblies, RPZ devices, and fire-line backflow preventers that require more time and specialized equipment. Pricing and scheduling may differ for each type.

Many certified backflow testers in Florissant will file test reports directly with your local water authority or municipality on your behalf. Confirm this with your provider before scheduling. Some jurisdictions require the property owner to submit reports, while others accept direct submissions from the tester.

Backflow testing in Florissant, Missouri typically costs between $50 and $200 per device, depending on the type of backflow preventer and the complexity of the installation. RPZ assemblies generally cost more to test than double check valve assemblies. Contact providers listed above for current pricing in the Florissant area.

If a backflow preventer fails its annual test, the certified tester will diagnose the issue — often a worn check valve, damaged disc, or fouled relief valve. Most testers in Florissant can repair the device on site and re-test it the same day. Your water authority may require the passing report within a set deadline.

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