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Backflow Testing Services in Charleston, South Carolina

Finding a reliable backflow testing professional in Charleston, South Carolina is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 14 backflow testing companies serving Charleston and surrounding communities including Mount Pleasant, North Charleston, Goose Creek.

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 Charleston area.

Most water authorities in South Carolina 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 Charleston 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.

14 listed providers

Services:
Charleston Water System backflow testing
< 1 mi

Charleston Water System

1.7(219)

Charleston, SC · < 1 mi

Emergency Service
Website
Ashley Plumbing Co backflow testing
Testing Verified
1 mi

Ashley Plumbing Co

5.0(7)

Testing Verified · Charleston, SC · 1 mi

Backflow TestingPreventer InstallationCommercial
Website
Blitch Plumbing backflow testing
Testing Verified
3 mi

Blitch Plumbing

4.3(162)

Testing Verified · Charleston, SC · 3 mi

Backflow TestingPreventer InstallationPreventer Repair
Website
Grace Plumbing and Water Filtration LLC backflow testing
5 mi

Grace Plumbing and Water Filtration LLC

5.0(33)

Mt Pleasant, SC · 5 mi

CommercialResidentialEmergency Service
Website
Charleston Irrigation and Backflow, llc backflow testing
Testing Verified
5 mi

Charleston Irrigation and Backflow, llc

No reviews yet

Testing Verified · Mt Pleasant, SC · 5 mi

Backflow TestingPreventer InstallationSprinkler Backflow
Website
Pardee Service Experts backflow testing
6 mi

Pardee Service Experts

4.9(6,366)

Charleston, SC · 6 mi

ResidentialEmergency Service
Website
PlumbX backflow testing
8 mi

PlumbX

5.0(39)

North Charleston, SC · 8 mi

CommercialEmergency ServiceSame Day Service
Website
The Hiller Companies backflow testing
Testing Verified
9 mi

The Hiller Companies

3.0(10)

Testing Verified · Charleston, SC · 9 mi

Backflow Testing
Website
Rooter Man Plumbing backflow testing
Testing Verified
9 mi

Rooter Man Plumbing

4.9(572)

Testing Verified · Charleston, SC · 9 mi

Backflow TestingCommercialEmergency Service
Website
Swell Guy Plumbing Co backflow testing
Testing Verified
10 mi

Swell Guy Plumbing Co

4.9(35)

Testing Verified · Hanahan, SC · 10 mi

Backflow TestingEmergency Service
Website
DI
Testing Verified
12 mi

Daniel Island Backflow

5.0(5)

Testing Verified · Mt Pleasant, SC · 12 mi

Backflow Testing
Website
Purpose Plumbing backflow testing
13 mi

Purpose Plumbing

4.4(327)

Charleston, SC · 13 mi

CommercialResidentialEmergency Service
Website
Mr. Rooter Plumbing of Greater Charleston backflow testing
13 mi

Mr. Rooter Plumbing of Greater Charleston

4.7(960)

North Charleston, SC · 13 mi

Emergency Service
Website
BHM Backflow backflow testing
17 mi

BHM Backflow

5.0(6)

Goose Creek, SC · 17 mi

Website

Frequently Asked Questions About Backflow Testing in Charleston

Many certified backflow testers in Charleston 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 Charleston, South Carolina 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 Charleston 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 Charleston 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.

Cross-connection control prevents contaminated water from flowing backwards into the clean water supply. Backflow prevention devices are installed at cross-connection points to protect public health. Regular testing ensures these devices function properly. Many municipalities in South Carolina require cross-connection control programs for commercial properties and irrigation systems.

Many municipalities in South Carolina require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Charleston can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.

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