Lead pipes by county in South Carolina
Lead, galvanized and unknown service lines reported by the water systems serving each South Carolina county.
| County | Lead | Galv. | Unknown | Systems |
|---|
| Abbeville County | 24 | 0 | 3,642 | 4 |
| Aiken County | 1 | 32 | 3,476 | 15 |
| Allendale County | 0 | 9 | 2,100 | 3 |
| Anderson County | 0 | 804 | 10,640 | 24 |
| Bamberg County | 0 | 0 | 1,132 | 3 |
| Barnwell County | 0 | 0 | 795 | 3 |
| Beaufort County | 0 | 18 | 885 | 7 |
| Berkeley County | 0 | 83 | 15,315 | 5 |
| Calhoun County | 0 | 0 | 0 | 3 |
| Charleston County | 6,504 | 2 | 65,064 | 9 |
| Cherokee County | 0 | 39 | 4,477 | 6 |
| Chester County | 0 | 0 | 0 | 1 |
| Chesterfield County | 0 | 0 | 2,637 | 7 |
| Clarendon County | 0 | 0 | 2,432 | 4 |
| Colleton County | 0 | 0 | 0 | 2 |
| Darlington County | 0 | 0 | 21,095 | 4 |
| Dillon County | 0 | 0 | 9,999 | 4 |
| Dorchester County | 0 | 111 | 419 | 7 |
| Edgefield County | 0 | 0 | 0 | 1 |
| Fairfield County | 0 | 0 | 0 | 5 |
| Florence County | 1 | 907 | 9,431 | 7 |
| Georgetown County | 0 | 294 | 6,591 | 10 |
| Greenville County | 0 | 1,809 | 31,006 | 6 |
| Greenwood County | 0 | 0 | 2,006 | 4 |
| Hampton County | 0 | 247 | 285 | 4 |
| Horry County | 0 | 0 | 58,745 | 10 |
| Jasper County | 0 | 0 | 0 | 1 |
| Kershaw County | 0 | 2 | 2,575 | 4 |
| Lancaster County | 0 | 59 | 9,605 | 4 |
| Laurens County | 0 | 0 | 4,237 | 3 |
| Lee County | 0 | 656 | 0 | 1 |
| Lexington County | 0 | 205 | 7,689 | 25 |
| Marion County | 0 | 0 | 9,477 | 4 |
| Marlboro County | 3 | 1,050 | 513 | 5 |
| McCormick County | 32 | 110 | 2,452 | 2 |
| Newberry County | 0 | 4 | 5,996 | 4 |
| Oconee County | 0 | 0 | 12,262 | 8 |
| Orangeburg County | 0 | 0 | 1,304 | 9 |
| Pickens County | 0 | 2,744 | 6,317 | 14 |
| Richland County | 0 | 21 | 461 | 8 |
| Saluda County | 0 | 0 | 2,107 | 3 |
| Spartanburg County | 0 | 0 | 0 | 7 |
| Sumter County | 0 | 17 | 2,042 | 8 |
| Union County | 0 | 0 | 0 | 6 |
| Williamsburg County | 5 | 28 | 902 | 7 |
| York County | 0 | 416 | 7,548 | 13 |
Systems serving several counties are counted in each. Source: EPA SDWIS service line inventory, 2026 Q3.