CHS Backflow
Free quote

Charleston, SC · Free referral to state-certified testers

Backflow issues in Charleston?Free referral to local pros.

A licensed pro comes to test and certify your device. Ask for proof of license and insurance.

Quick answer

CHS Backflow is a free referral service for backflow testing in Charleston, SC: call or text (843) 286-4721 (our assistant answers 24/7 in English or Spanish; callbacks Mon–Fri, 8am–5pm ET) and a vetted local pro calls back within the hour during business hours; backflow repair or rebuild kit: typically $150–$400; serving Charleston, Mount Pleasant, North Charleston, Summerville, James Island, Johns Island.

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What backflow testing measures

Typical backflow test results

Backups a year

6backups/yr

Device needs repair

High pressure drop

Potential backflow risk

Certified by the local pro we refer

Passed test

Safe water flow

Test setup · Measure pressure drop · Fail if over limit

75

Typical test cost

dollars per device

175

High test cost

for complex devices

1

Yearly test required

per South Carolina law

3

Hours per test

typical onsite time

The work

What to expect during testing

Testing usually takes 1 to 3 hours per device. Repairs add time and cost. Water may be briefly shut off.

  • FREE REFERRAL • NO COST •

    Free referral

    No fee to you

  • STATE-CERTIFIED TESTERS • VERIFIED •

    Local pros

    Vetted, insured local pros we refer

  • WRITTEN QUOTE • TRANSPARENT PRICES •

    Written quote

    Know costs before work

Pros we refer carry South Carolina state certification and insurance where required.

Pros we refer carry South Carolina state certification where required. Ask for proof of license and insurance.

Who calls

Why Charleston homeowners use our referrals

Cost in Charleston

What it costs here.

Typical Charleston ranges, 2026. Nothing is billed until you approve a written estimate.

Most homes

Annual backflow test

Certified test and report filing by the local pro we refer

$75–175/ device
Request a referral
  • State-certified tester visits (referred pro)
  • Test and certify device (by local pro)
  • Paperwork filed with utility
  • Free referral, no obligation

Repair or rebuild kit

Parts and labor for repairs

$150–400/ repair
Get repair estimate
  • Replace valves and seals
  • Fix leaks and malfunctions
  • Vetted local pros
  • Written quote before work

New backflow preventer

Full device installation

$400–1,200/ device
Get installation quote
  • Vetted, insured local pros we refer
  • Includes device and install
  • Paperwork filed with utility
  • Free referral, no obligation

Where we work

Charleston and nearby communities

All of Charleston County and the towns around it. Tap a town to see it.

Charleston neighborhoods

Charleston, SC

Backflow testing is required annually by Charleston Water System and Mount Pleasant Waterworks for irrigation and fire systems. Salt air may corrode devices; rare freezes can cause damage.

Questions

What Charleston homeowners ask before they call.

Hover to pause. Straight answers, no fluff.