ZIP Code 29180
High RiskPFAS above EPA limits detected
4 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
12
PFAS Detected
4
Above EPA Limits
3
Water Systems
820%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 118% of limit
Detected: 4.70 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 115% of limit
Detected: 4.60 ppt
CHESTER METROPOLITAN DISTRICT (1220002)
SC1220002 High RiskWater Type
Surface Water
PFAS Detected
4
Above MCL
2
State
South Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 4.70ppt | 118% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 4.60ppt | 115% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFPeA Perfluoropentanoic acid | 8.90ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 8.50ppt | No federal limit | — | Unregulated |
WINNSBORO TOWN OF (2010001)
SC2010001 High RiskWater Type
Surface Water
PFAS Detected
4
Above MCL
1
State
South Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 32.80ppt | 820% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 9.00ppt | 90% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 3.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.80ppt | No federal limit | — | Unregulated |
MIDCOUNTY WATER DIST 2 (2020004)
SC2020004 High RiskWater Type
Surface Water
PFAS Detected
4
Above MCL
1
State
South Carolina
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 20.10ppt | 503% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.50ppt | 65% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 3.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 3.30ppt | No federal limit | — | Unregulated |
Note: ZIP code 29180 is served by 3 separate water utilities.
Results above show data for each system independently.
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.