PlainWater
Counties → South Carolina

Charleston County, South Carolina

Water Systems
74
Population Served
480,067
Total Violations
846
252 health-based
PFAS Detected
7
of 7 tested

Violation Analysis

54.1%
Systems with Violations
11.4
Avg Violations per System
29.8%
Health-Based Violations

Water Source Types

GW
35 systems (47%)
SW
15 systems (20%)

PFAS Contamination

7
Systems Tested
7
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Charleston South Carolina water systems by violation status, EPA SDWIS records.

No violations on record (14) One or more violations (36)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Charleston Water System (Sc1010001) 327,422 22 Detected
Mt Pleasant Water Works (1010002) 91,500 17 Detected
St John's Water (Sc1020002) 22,592 19 Detected
Kiawah Island Utility (Sc1010008) 9,550 5 Detected
Isle of Palms W/S Comm (Sc1010004) 9,530 32 Detected
Seabrook Island Town of (1010009) 5,939 19 Detected
Folly Beach City of (1010005) 5,086 19 Detected
Sullivans Island Town of (1010003) 2,521 9 -
Lincolnville Town of (Sc1010007) 1,980 114 -
Awendaw Town of (Sc1010504) 713 8 -
E Frierson School (Sc1070115) 281 5 -
St James School (Sc1070143) 240 27 -
Minnie Hughes Elementary (Sc1070124) 227 12 -
Camp Ho Non Wah (Sc1070675) 200 12 -
Cape Romain School (Sc1070140) 198 41 -
Burbage MHP (Sc1060063) 171 33 -
Jericho Trailer Park (1060061) 103 3 -
Jane Edwards Elementary (Sc1070122) 100 6 -
WA Burbage Trailer Park 1 (1060014) 81 38 -
Ems Medic 6/Magistrate Court (1079003) 72 4 -
Dollar General-McClellanville(sc1070008) 60 48 -
Dewees Utilities (Sc1050011) 55 89 -
The Bent Rod (Sc1070236) 50 18 -
Whole Foods Mkt Chas (Sc1080096) 50 0 -
Circle K 2720878 (1070913) 49 2 -
T W Graham Co (Sc1072002) 40 6 -
Windwood Farm Home (Sc1070963) 33 47 -
Berkeley Electric Coop (1030028) 32 6 -
Wadmalaw Island Comm Ctr (Sc1070958) 30 6 -
Deas Restaurant Water System (Sc1072016) 30 0 -
Charleston Tea Garden #1 (Sc1030020) 26 0 -
St James-Santee Fhc Inc (Sc1070006) 26 38 -
Adams Run Civic Center (Sc1070148) 26 37 -
McClellanville Diner (Sc1070234) 26 4 -
Old Post Office Restaurant (Sc1070247) 26 29 -
Scprt-Hampton Plantation (1070600) 26 12 -
Oak Plantation Campground (1070802) 26 5 -
Shree Food Mart (Sc1070915) 26 2 -
Enk 878 (Sc1070974) 26 0 -
Buckshot Restaurant (Sc1072010) 26 11 -
Mt Pleasant Ro Dispensing Sta#1(1080032) 26 0 -
Mt Pleasant Ro Dispensing Sta#2(1080033) 26 0 -
Dewees Island Ro Dis Sta (Sc1080038) 26 0 -
Earth Fare Charleston (Sc1080063) 26 0 -
Whole Food Market/Mt Pleasant (1080065) 26 0 -
Mt Pleasant Ro Dispensing Sta#3(1080066) 26 0 -
Primo-Walmart 3367 (1080067) 26 0 -
Primo-Walmart 1748 (Sc1080068) 26 0 -
Ems Medic 6/Wtr Dispense (Sc1080069) 26 0 -
Primo-Food Lion 1097 (Sc1080076) 26 0 -

Other Counties in South Carolina

Greenville County
45 systems · 498,460 served · 567 violations
Horry County
53 systems · 416,612 served · 307 violations
Richland County
77 systems · 361,654 served · 5,612 violations
Spartanburg County
29 systems · 318,077 served · 154 violations
Anderson County
40 systems · 206,616 served · 1,334 violations
Beaufort County
45 systems · 203,764 served · 537 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Charleston County? ▼
Charleston County has 846 total drinking water violations across 74 water systems, of which 252 are health-based violations. 54.1% of systems have at least one violation.
How many people get water from Charleston County systems? ▼
Water systems in Charleston County serve approximately 480,067 people through 74 public water systems.
Has PFAS been detected in Charleston County water? ▼
Of 7 water systems tested for PFAS in Charleston County, 7 had PFAS detected (100.0% detection rate).
What types of water sources supply Charleston County? ▼
Water systems in Charleston County use GW (35 systems), SW (15 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 29.8% of Charleston County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.