Dorchester County, South Carolina: drinking water report. Dorchester County lies inland from Charleston, home to about 170,000 residents in Summerville and…
Dorchester County lies inland from Charleston, home to about 170,000 residents in Summerville and surrounding communities. Dorchester County Water and Sewer draws from the Edisto River and groundwater. The county's rapid growth as a Charleston suburb has increased water demand and infrastructure expansion.
Dorchester County's sources are generally clean. The Edisto River is the longest free-flowing blackwater river in North America, with minimal industrial contamination. UCMR5 data shows low-level PFAS detections in some county systems. The county does not host major military installations, though it borders Joint Base Charleston's airfield.
According to the South Carolina DHEC's 2024 monitoring data, county systems met all federal standards.
Dorchester County's water quality is generally good. Growth-related infrastructure expansion is the main dynamic.
Check your water for data in your area. A carbon filter handles taste concerns. Our water filter guide covers options. Pull your detailed report, and visit our South Carolina page for statewide data.