ZIP Code 29016
High RiskPFAS above EPA limits detected
3 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.
11
PFAS Detected
3
Above EPA Limits
2
Water Systems
820%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 820% of limit
Detected: 32.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 173% of limit
Detected: 6.90 ppt
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 |
COLUMBIA CITY OF (SC4010001)
SC4010001 High RiskWater Type
Surface Water
PFAS Detected
7
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 | 8.60ppt | 215% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 6.90ppt | 173% of limit
| 4 ppt | ⚠ Exceeds MCL |
HFPO-DA GenX (Hexafluoropropylene oxide dimer acid) | 9.20ppt | 92% of limit
| 10 ppt | Below limit |
PFPeA Perfluoropentanoic acid | 6.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.70ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.20ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 3.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 29016 is served by 2 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.