COUNTY WATER-SYSTEM LEDGER
Charleston, South Carolina
EPA’s September 2026 export lists 8 active community water systems serving Charleston, South Carolina, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Charleston, South Carolina
EPA associates 8 covered systems with Charleston, South Carolina; their reported population-served values total 474,140 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Charleston Water System (Sc1010001)SC1010001 | 327,422 | Surface water | No current violation flagged |
| Mt Pleasant Water Works (1010002)SC1010002 | 91,500 | Surface water purchased | No current violation flagged |
| St John'S Water (Sc1020002)SC1020002 | 22,592 | Surface water purchased | No current violation flagged |
| Kiawah Island Utility (Sc1010008)SC1010008 | 9,550 | Surface water purchased | No current violation flagged |
| Isle Of Palms W/S Comm (Sc1010004)SC1010004 | 9,530 | Surface water purchased | No current violation flagged |
| Seabrook Island Town Of (1010009)SC1010009 | 5,939 | Surface water purchased | No current violation flagged |
| Folly Beach City Of (1010005)SC1010005 | 5,086 | Surface water purchased | No current violation flagged |
| Sullivans Island Town Of (1010003)SC1010003 | 2,521 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Charleston, South Carolina
EPA classifies 8 systems serving Charleston, South Carolina across 2 primary-source categories; Surface water is the largest category with 1 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.