Charleston Water System provides direct retail water service to 110,000 accounts, serving areas of Charleston, Berkeley, and Dorchester counties.

Searchable Service Area Map
To find out if a home, business, or vacant lot is in our water and / or sewer service area, view the map and search the address.

Service Availability for New Development
To find out if water and/or sewer service is available for a property, please complete the Request for Service Availability Letter form. 

Wholesale Service
Charleston Water System also provides water on a wholesale basis to the Department of Defense and the following municipalities / utilities:

• Dorchester County Public Works
• Isle of Palms Water & Sewer Commission
• Mount Pleasant Waterworks
• St. Johns Water Company (serves Kiawah and Seabrook Islands)
• Town of Folly Beach
• Town of Sullivan's Island

Charleston Water System is a member of the Partnership of Safe Water and has won many honors and awards for operational excellence.