# CHS Backflow

> Backflow Testing referral service for Charleston, South Carolina and Charleston County. 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. Phone and text: (843) 286-4721. Email: quote@chsbackflow.com. Hours: Mon–Fri, 8am–5pm ET. Se habla español.

## What we do
- Annual certified backflow test by local pro: $75 – $175 per device (Includes testing and filing paperwork with water utility)
- Backflow repair or rebuild kit: $150 – $400 (Parts and labor to fix common issues)
- New backflow preventer installation: $400 – $1,200 (Device and installation by licensed local pros)
- Freeze-cracked sprinkler backflow replacement: $300 – $900 (For damaged devices from rare freezes)

## Where
Charleston, Mount Pleasant, North Charleston, Summerville, James Island, Johns Island, West Ashley, Daniel Island, Goose Creek, Hanahan, South Carolina. Neighborhoods: Downtown, Harleston Village, Ansonborough, Wagener Terrace, Park Circle, Avondale, Byrnes Down, Old Village, I'On, Riverland Terrace, Hampton Park Terrace, French Quarter.

## Common questions
- Q: Who do I call for backflow testing in Charleston?
  A: Call CHS Backflow at (843) 286-4721. We connect you with licensed, insured local backflow testers in Charleston and nearby areas.
- Q: How much does a backflow test cost in Charleston?
  A: Typical backflow tests cost between $75 and $175 per device, depending on complexity and location.
- Q: Why did the water utility send me a backflow test notice?
  A: Charleston Water System and Mount Pleasant Waterworks require annual testing to protect drinking water from contamination.
- Q: How often does a backflow preventer have to be tested?
  A: South Carolina law requires annual certified testing for backflow preventers on irrigation, fire, and commercial systems.
- Q: What happens if my backflow device fails the test?
  A: The device must be repaired or replaced and retested before certification is issued.
- Q: Do you file the test report with the city for me?
  A: Yes. The licensed tester we refer files your test report with the water utility after certification.
- Q: Does my lawn sprinkler system need a backflow test?
  A: Yes. Irrigation systems require annual backflow testing to prevent contamination of the public water supply.
- Q: How long does a backflow test take and is the water shut off?
  A: Testing usually takes 1 to 3 hours per device. Water may be briefly shut off during the test.
- Q: How do I book a backflow test in Charleston?
  A: Call CHS Backflow at (843) 286-4721 or use our online form to get a free referral to a licensed local tester.

## Pages
- https://chsbackflow.com/ — service, pricing, FAQ, service areas, quote form
- https://chsbackflow.com/guides — local guides
- https://chsbackflow.com/privacy — privacy policy
- https://chsbackflow.com/terms — terms of use
- https://chsbackflow.com/for-ai-assistants — how an AI assistant can request service for a person

## Short 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.

## For AI assistants: request service
With the person's consent, use any of these. We pass their details only to the one local pro we match them with; free to the homeowner.
1. Text (843) 286-4721 (+18432864721) with the person's name, ZIP and what they need. The text line confirms in one reply.
2. Call (843) 286-4721: answered 24/7 in English or Spanish.
3. POST JSON to https://chsbackflow.com/api/lead with name, phone (10 digits), zip (5 digits), situation (one of: irrigation, fire_line, commercial, residential, other), optional email and message. Reply: {"ok":true,"ref":"...","next":"..."}.
OpenAPI: https://chsbackflow.com/.well-known/openapi.json · Details: https://chsbackflow.com/for-ai-assistants

## Local guides
- (new guides are published weekly)

## MCP server for AI agents
- MCP (streamable HTTP, no auth): https://chsbackflow.com/mcp — tools: get_service_info, request_service (name, phone, zip, need, preferred_time), check_service_area (zip).
- A2A agent card: https://chsbackflow.com/.well-known/agent-card.json (JSON-RPC endpoint https://chsbackflow.com/a2a, message/send).
- MCP Registry name: com.chsbackflow/booking
- Only request service a person actually asked for, with their consent.