Charleston Water System provides direct retail water service to 110,000 accounts, serving areas of Charleston, Berkeley, and Dorchester Counties.
Searchable Service Area Map New!
To find out if a home, business, or vacant lot is in our water and/or sewer service area, open the map and search the address.
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Charleston Water System also provides water on a wholesale basis to the Department of Defense and the following municipalities/utilities:
- St. Johns Water Company (serves Kiawah and Seabrook Islands)
- Mount Pleasant Waterworks
- Dorchester County Public Works
- Town of Folly Beach
- Town of Sullivan's Island
- Isle of Palms Water & Sewer Commission
Charleston Water System is a member of the Partnership of Safe Water and has won many honors and awards for operational excellence.