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  5. Backflow FAQs

Backflow FAQs

  1. I received a letter saying my annual backflow test is due. What do I need to do?
  2. I'm a renter, why did I receive a letter about the backflow preventer?
  3. I received a letter saying I need to install a backflow preventer. How do I do that?
  4. Why are backflow preventers tested annually?
  5. Do Backflow Testers work for Charleston Water System?
  6. Who should I contact for more information?
  7. How do I know if I need to install a backflow preventer?
  8. What is backflow?
  1. What is a cross connection?
  2. What causes backflow?
  3. How does Charleston Water System prevent backflow?
  4. What can I do to protect my home plumbing system from backflow?
  5. What is the backflow administration fee?
  6. A backflow preventer was already installed when I moved into this home / commercial space, but I don't think I need it. What should I do?
  7. I don’t use my irrigation system. Do I still have to test and maintain my backflow preventer?
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Watch a Video Explaining Backflow (1:55) 

Contact Us

  1. Cross-Connection Control Department


    103 St. Philip Street
    PO Box B (29402)
    Charleston, SC 29403
    Directions

    General Info
    (843) 727-7148

    Installation Inspection Request
    (843) 727-6981

    Fax: 843-579-6852
    Email Us

    John Watkins
    Cross-Connection Manager
    Email

    Randy Hunt
    Cross-Connection Inspector
    Email

    Don Sondles
    Cross-Connection Inspector
    Email
  1. Overview of Backflow Prevention
  2. Commercial Customers
  3. Residential Customers
  4. Approved Tester List
  5. Information for Installers
  6. Information for Testers
  7. How to Become a Tester
  8. Documents & Forms
  9. Backflow FAQs
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