Charleston Water Quality Report
9 cities ranked · Average grade: B+ · South Carolina
Avg Score
84.9
Cities Ranked
9
Health Violations
7
PFAS Detected
6
84.9
County avg score
9
Cities ranked
100%
A or B grade
0%
D or F grade
7
Health violations
6
PFAS detected
Grade Distribution
How Charleston cities scored
A
4
44%
Excellent
B
5
56%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs South Carolina average
▲ 3.1 pts above state average
City Map
Water quality across Charleston
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Charleston
County context
2
Superfund sites in Charleston
99.8%
of residents on fluoridated water (CDC, 2020)
21,350
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Charleston
Industrial polluters nearby
Facilities reporting the most surface-water releases in Charleston, 2023.
Total reported releases to surface water: 21,350 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
KAPSTONE PAPER & PACKAGING CORP NORTH CHARLESTON, SC29406 | Manganese compounds | 21,056 |
GS II INC. NORTH CHARLESTON, SC29405 | Formaldehyde | 120 |
EVERRIS NA INC NORTH CHARLESTON, SC29418 | Manganese compounds | 94 |
DETYENS SHIPYARD NORTH CHARLESTON, SC29405 | Copper | 61 |
MERCEDES-BENZ VANS LLC LADSON, SC29456 | Zinc compounds | 13 |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Charleston
Superfund sites nearby
Federally tracked hazardous-waste sites within Charleston on the EPA National Priorities List.
- KOPPERS CO INC CHARLESTON PLANT
- MACALLOY CORPORATION
Source: EPA Superfund National Priorities List
Full Rankings
All 9 cities in Charleston
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Sullivans Island | A | 90.3 | 3K | 5 | Health Unresolved | |
| 2 | Folly Beach | A- | 86.5 | 5K | 13 | PFAS Unresolved | |
| 3 | Seabrook | A- | 86 | 6K | 8 | Health PFAS Unresolved | |
| 4 | Johns Island (Sta.) | A- | 85.8 | 32K | 11 | Health PFAS Unresolved | |
| 5 | Isle Of Palms | B+ | 84.3 | 10K | 14 | Health PFAS Unresolved | |
| 6 | Mount Pleasant | B+ | 84 | 92K | 5 | Health PFAS Unresolved | |
| 7 | Charleston | B+ | 82.8 | 327K | 16 | Health PFAS Unresolved | |
| 8 | Lincolnville | B+ | 82.8 | 2K | 33 | Unresolved | |
| 9 | Awendaw | B+ | 81.6 | 746 | 19 | Health Unresolved |