Charleston, South Carolina · Local guide

Can I do irrigation backflow testing myself, or do I need a pro in Charleston, SC?

Short answer

A pro in Charleston, SC charges about $85 for a residential irrigation backflow test, and South Carolina law requires testing by a state-certified backflow prevention tester. Call or text (843) 286-4721: CHS Backflow is a free referral service that connects you with a vetted local pro in Charleston. You cannot legally do irrigation backflow testing yourself.

Updated October 26, 2026 2 min read

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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Quick facts Answer
Cost range $85 residential, $125 commercial; $225 same-day emergency
Time Annual testing required by Charleston Water System
Who's qualified State-certified backflow prevention tester with up-to-date DES certification card

Why can't homeowners do irrigation backflow testing in Charleston?

South Carolina DES requires all backflow testing to be done by a state-certified backflow prevention tester holding an up-to-date certification card issued by the Department. Certification requires a four-day course plus a proctored practical exam and a written exam. A homeowner without that certification cannot legally perform or file a passing test.

How often is irrigation backflow testing required in Charleston?

Charleston Water System requires annual testing for irrigation backflow devices to stay compliant with local standards. All test reports must be filed with the applicable filing fees through its third-party reporting process. A certified tester handles both the test and the paperwork.

What can a handy Charleston homeowner do themselves?

You can locate your irrigation backflow assembly, clear access to it, and watch for visible leaks or damage between tests. You can also shut off and drain the system if you suspect a problem. The actual test, repairs, and report filing must be left to a certified tester.

When to call a pro for irrigation backflow testing in Charleston

Call a pro right away if your annual test is due, since Charleston Water System requires yearly testing and filing. Also call if the device fails, leaks, or was installed recently and needs its first certification. Same-day emergency residential tests run about $225, while scheduled tests avoid a $45 dispatch fee.

How do you verify a certified backflow tester in Charleston?

Ask the pro for their up-to-date backflow prevention assembly tester certification card issued by South Carolina DES. Certification must be renewed every 3 years, so check the card's date. The state recognizes four tester types: General Tester, Limited Tester, Inspector Tester, and Manufacturer's Agent.

What to do next

  1. Schedule your annual irrigation backflow test before Charleston Water System's compliance deadline.
  2. Ask the pro for their up-to-date South Carolina DES backflow prevention tester certification card and confirm the renewal date is within 3 years.
  3. Request a written quote covering the test, any filing fees, and the third-party report submission to Charleston Water System.
  4. Book a scheduled test rather than a same-day emergency visit to avoid the $45 dispatch fee.
  5. Call (843) 286-4721 or email [email protected] for a free quote from a licensed, insured local backflow tester.

CHS Backflow is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.

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Quick answers

How much does irrigation backflow testing cost in Charleston, SC?

Residential backflow tests run about $85 and commercial tests about $125. Same-day emergency residential tests cost around $225.

How long does backflow tester certification last in South Carolina?

Certification is valid for three years from the date of initial certification or recertification. Testers must renew through the state.

What does it take to become a certified backflow tester in South Carolina?

It takes a four-day course plus a proctored practical exam and a written exam. One listed course costs $699 in tuition, not including fees and equipment.

Where can I take a backflow tester certification class near Charleston?

South Carolina DES lists a tester certification class at the North Charleston Convention Center with dates shown as June 9-12, 2026. Check the state's Cross Connection Control program for current availability.

Backflow testing help in Tulsa

CHS Backflow is a free referral service connecting you with licensed, insured local backflow testers in Charleston and nearby areas. The pros we refer perform all work and may pay us a referral fee. We do not perform work or hold licenses. You pay no fee to us and may get other quotes.

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