Backflow prevention assemblies have internal seals, springs, and moving parts that are susceptible to wear and failure. Annual testing ensures they are functioning properly and protecting our public water system.
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Provide a copy of the letter to your Tester. After completing the test, the Tester will submit the results to Charleston Water System.
Compliance with our backflow requirements is the responsibility of the water account holder. If you are renting a home or commercial space, your landlord or property management company may agree to take care of the backflow installation and/or annual testing, but it is the ultimately the account holder's responsibility.
If you hire someone to install it, provide him with a copy of the letter and installation guidelines enclosed in the letter.
Once it's installed, you or the installer should contact us to request an inspection. If it passes inspection, the final step is to have it tested by a tester from our List of Approved Backflow Testers.
We do require backflow tests to be performed by Testers on our List of Approved Backflow Testers.
Contact our Cross-Connection Control Program by calling (843) 727-7148 or send us an email.
Backflow requirements vary for commercial customers based on the business's water use. Our staff reviews newly established commercial water accounts to assess the degree of backflow hazard and notifies businesses about backflow requirements.
Backflow prevention devices protect plumbing systems and our public water supply by preventing backflow.
Backpressure can also cause backflow. Backpressure occurs when a building's plumbing system has higher pressure than the public water supply.
Both situations can allow water and contaminants from a private plumbing system to reverse flow into the public supply, potentially contaminating the water for other users. Backflow preventers keep this from happening.
Hose-bib vacuum breakers are inexpensive and available at hardware stores. They have been required by the Standard Plumbing Code since 1963.
To eliminate these backflow requirements, the irrigation system must be physically disconnected from your plumbing system.
If your irrigation system is served by the same water service that serves your home or business, you can have the irrigation system cut and capped. Once this is complete, contact us to schedule an inspection.
If your irrigation system is served by a separate irrigation meter, contact us to close the account and we will lock or remove the meter.