Charleston has multiple water providers: Charleston water and St. John's Water Company. This page provides information about St. John's Water Company.
The St. John's Water Company, Inc. provides water for about 17,132 residents living in the Johns Island area, Charleston County, South Carolina. Established in 1975, the St. John's Water Company purchases its water from Charleston Water System, which draws surface water from the Bushy Park Reservoir and the Edisto River.

Johns Island Drinking Water Quality
Consumer Confidence Water Quality Reports
Under the authority of the Safe Drinking Water Act, the EPA requires St. John's Water Company, Inc. to assess local water quality each year and distribute a Consumer Confidence Water Quality Report. At WaterZen, we review these reports and make the information available, in a concise, straightforward, and easy-to-understand way. You can find CCR report on the St. John's Water Company, Inc. website.
Contact St. John's Water Company, Inc. Customer Service
Have a Question, Issue or Comment?
Main Customer Service
Physical Address:
3362 Maybank Highway
P.O. Box 629
Johns Island, South Carolina 29457
843-559-0186
sjwc@stjohnswaterinc.com
Emergency (24 hours - broken water main or pipeline, etc.)
843-559-0186
Pay Your St. John's Water Company Bill
Already have an account?
If you already have an account, you just need to login to the St. John's Water Company site. St. John's Water Company accepts credit cards, debit, and direct deposit. Click here to login.
Want to create a new account?
You can create a new account on the St. John's Water Company website. Once you create the account, you can setup payment with credit, debit, or direct deposit. Click here to create an account.
Want to pay without an account?
You can make a one-time payment without creating an account. You will need to have your credit or debit card in order to make the one time payment. Click here to make a one time payment.
How to Start Charleston Water Service
Starting Your Service
When you move to a new home in Johns Island, you'll most likely already have running water, but you'll still need to set up water service with the St. John's Water Company. Luckily, Charleston has made it pretty simple with the following online form. Starting service generally takes just two business days.
Click here to fill out a Start Service Form.
Stopping Your Service
When you move out of a home in Johns Island, you'll need to stop your water service with the St. John's Water Company, so you don't keep getting billed. Simply fill out the following online form. Stopping service normally takes just two business days.
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