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Charleston County, South Carolina

Water Treatment inCharleston County, SC

Charleston County water is largely Charleston Water System water, treated surface water from the Edisto River and Bushy Park Reservoir with chloramine for residual disinfection. Mount Pleasant Waterworks blends that source with groundwater from the Middendorf and Black Creek aquifers. The downtown peninsula's historic homes sit on older service lines, which is why so many calls we take from Charleston ask about taste, off odors, and scale on glass shower doors. SC DHEC publishes the consumer reports each utility files.

What is in the water in Charleston County

Primary utilities

  • Charleston Water System
  • Mount Pleasant Waterworks
  • St. Andrew's Public Service District

Published water-quality reports

SOURCE-NEEDED: current-year CCR numeric extracts pending verification. Links go to the utility's own water-quality page.

Common concerns we treat

  • Chloramine taste and odor on city water
  • Disinfection byproducts (TTHMs) on the CCR — Charleston Water CCR reports 3 GPG total hardness (58 ppm CaCO3)
  • Aging service lines in the downtown peninsula
  • Coastal humidity accelerating scale on fixtures

Cities we serve in Charleston County

6 cities, one local crew.

Charleston Water System

Charleston, SC

Charleston Water System treats surface water from the Edisto River and Bushy Park Reservoir and disinfects with chloramine. The downtown peninsula has a high concentration of historic homes on aging service lines.

Mount Pleasant Waterworks

Mount Pleasant, SC

Mount Pleasant Waterworks blends treated surface water (purchased from Charleston Water System) with groundwater from the Middendorf and Black Creek aquifers, then disinfects with chloramine.

Charleston Water System

North Charleston, SC

North Charleston is served by Charleston Water System with the same Edisto and Bushy Park source water as the City of Charleston.

Charleston Water System

Daniel Island, SC

Daniel Island is served by Charleston Water System. The neighborhood's age means most homes have modern interior plumbing, but coastal humidity still drives faster scale buildup than inland markets.

Charleston Water System

Folly Beach, SC

Folly Beach receives treated water from Charleston Water System. Heavy seasonal-rental occupancy means many homes run softeners and filters intermittently and benefit from systems that handle long idle periods.

Charleston Water System / St. Andrew's PSD

James Island, SC

James Island households are served by Charleston Water System or by St. Andrew's Public Service District, which purchases treated water from Charleston Water System.

Lifetime warranty. 500+ customers. 4.9 stars.

Free in-home water test across Charleston County.

We size the system to the actual water at your address, not a brochure. One free in-home test, real numbers, no obligation.