Tap Truth EPA drinking water records, in plain English

County drinking water records

Charleston County, SC drinking water systems

14 community water systems serve Charleston County, SC, reporting 501,799 people served in all. A system that also serves other counties counts all of its customers here.

3 of them (21%) had at least one health-based violation in the last 10 years. 3 systems still have one unresolved.

5 rely mainly on groundwater and 9 on surface water, counting water bought from other systems.

Their lead service line inventories list 6,504 lead lines, 2 galvanized lines that must be replaced and 68,648 lines of unknown material.

2 more systems are placed in Charleston County, SC by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
14
People served, sum of each system's own figure
501,799
Systems with a health-based violation, last 10 years
3
Systems with one unresolved
3
Lead service lines in inventories
6,504

Water systems serving Charleston County

14 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Charleston Water System Charleston, North Charleston and 6 more 327,422 Surface water 0 0 6,504
Mt Pleasant Water Works Mount Pleasant 91,500 Purchased surface water 0 0 0
DCWS Ashley Phosphate Ladson and North Charleston 26,536 Purchased surface water 0 0 0
St John's Water Charleston and land outside it 22,592 Purchased surface water 0 0 0
Kiawah Island Utility Kiawah Island 9,550 Purchased surface water 0 0 0
Isle of Palms W/S Comm Isle of Palms 9,530 Purchased surface water 0 0 0
Town of Seabrook Island Seabrook Island 5,939 Purchased surface water 0 0 0
City of Folly Beach Folly Beach 5,086 Purchased surface water 0 0 0
Town of Sullivans Island Sullivan's Island 2,521 Purchased surface water 0 0 0
Town of Awendaw McClellanville and Awendaw and land outside them 713 Groundwater 0 0 0
Burbage MHP Ravenel 171 Groundwater 1 1 0
Jericho Trailer Park Adams Run and land outside it 103 Groundwater 0 0 0
WA Burbage Trailer Park 1 Ravenel 81 Groundwater 1 2 0
Dewees Utilities Outside cities and towns 55 Groundwater 9 1 0

Systems placed by county record in Charleston County

2 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Town of Lincolnville County on record 1,980 Purchased surface water 0 2 0
Windwood Farm Home County on record 33 Groundwater 1 0 0

Cities and towns in Charleston County

16 places

Back to South Carolina

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations