South Carolina water quality by county
46 counties with public water systems. Pick a county to see every system that serves it.
| County | Active systems | People served | Share with violations, 3 yr | Serious violators | Health flags |
|---|---|---|---|---|---|
| Abbeville County | 14 | 14,210 | 0 | 0 | |
| Aiken County | 68 | 157,381 | 0 | 0 | |
| Allendale County | 8 | 9,261 | 0 | 0 | |
| Anderson County | 40 | 206,261 | 0 | 0 | |
| Bamberg County | 8 | 8,327 | 0 | 0 | |
| Barnwell County | 18 | 11,520 | 0 | 1 | |
| Beaufort County | 47 | 223,034 | 0 | 0 | |
| Berkeley County | 65 | 165,316 | 1 | 0 | |
| Calhoun County | 11 | 6,171 | 0 | 0 | |
| Charleston County | 73 | 431,366 | 1 | 0 | |
| Cherokee County | 8 | 54,855 | 0 | 0 | |
| Chester County | 18 | 16,760 | 0 | 0 | |
| Chesterfield County | 13 | 44,427 | 0 | 0 | |
| Clarendon County | 33 | 19,092 | 0 | 1 | |
| Colleton County | 39 | 22,246 | 0 | 0 | |
| Darlington County | 6 | 69,227 | 0 | 0 | |
| Dillon County | 6 | 28,656 | 0 | 0 | |
| Dorchester County | 54 | 165,538 | 0 | 0 | |
| Edgefield County | 9 | 29,621 | 0 | 0 | |
| Fairfield County | 18 | 22,911 | 0 | 1 | |
| Florence County | 25 | 101,784 | 0 | 0 | |
| Georgetown County | 24 | 74,409 | 0 | 0 | |
| Greenville County | 47 | 528,724 | 0 | 0 | |
| Greenwood County | 16 | 58,694 | 0 | 0 | |
| Hampton County | 17 | 11,858 | 0 | 0 | |
| Horry County | 51 | 424,440 | 0 | 0 | |
| Jasper County | 17 | 4,110 | 0 | 0 | |
| Kershaw County | 12 | 74,938 | 0 | 0 | |
| Lancaster County | 9 | 96,886 | 0 | 0 | |
| Laurens County | 10 | 67,949 | 0 | 0 | |
| Lee County | 2 | 4,183 | 0 | 0 | |
| Lexington County | 132 | 187,797 | 0 | 0 | |
| Marion County | 6 | 34,320 | 0 | 0 | |
| Marlboro County | 8 | 21,672 | 0 | 0 | |
| McCormick County | 7 | 10,564 | 0 | 0 | |
| Newberry County | 13 | 25,995 | 0 | 0 | |
| Oconee County | 56 | 101,023 | 0 | 0 | |
| Orangeburg County | 36 | 66,605 | 0 | 0 | |
| Pickens County | 47 | 134,014 | 0 | 0 | |
| Richland County | 79 | 396,379 | 0 | 0 | |
| Saluda County | 17 | 10,831 | 0 | 0 | |
| Spartanburg County | 30 | 354,847 | 0 | 0 | |
| Sumter County | 23 | 88,167 | 0 | 0 | |
| Union County | 8 | 31,744 | 0 | 0 | |
| Williamsburg County | 15 | 20,379 | 0 | 0 | |
| York County | 144 | 212,698 | 0 | 1 |
under 30% 30 to 59% 60% and over
About this data
Share with violations counts any violation in the past three years, including monitoring and reporting lapses. Counts cover active systems; systems serving more than one county are counted in each.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The South Carolina records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.