Water softeners and filtration in Johns Island, South Carolina.

Most of Johns Island gets its water from St. John's Water Company, a member owned co-op that buys treated water from Charleston Water System. That water crosses onto the island near the Stono Bridge, the Limehouse Bridge and the airport, and in 2025 it carried a chloramine residual of about 2.5 to 2.6 ppm.

What Johns Island homes are dealing with

Around the Lowcountry the questions are less about scale and more about the chloramine in tap water, the PFAS figures on local reports, and what a private well is carrying. The assessment starts from what your utility publishes about the water at your address.

From there you get one recommendation for your home and one written price, before anything is ordered.

What we install in Johns Island

• Whole home softener and carbon filtration off your main line, the flagship bundle starting at $2,699 installed.
• Under sink reverse osmosis on its own faucet, for drinking and cooking water.

Local install

Every Johns Island install is handled locally, start to finish.