ZIP Code 42431
Low Level4
PFAS Detected
0
Above EPA Limits
4
Water Systems
N/A
Highest % of MCL
NORTH HOPKINS WATER DISTRICT
KY0540138 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Kentucky
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 6.30ppt | No federal limit | — | Unregulated |
SOUTH HOPKINS WATER DISTRICT
KY0540406 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Kentucky
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 5.20ppt | No federal limit | — | Unregulated |
MADISONVILLE LIGHT & WATER
KY0540936 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Kentucky
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 6.80ppt | No federal limit | — | Unregulated |
NEBO WATER DISTRICT
KY0540977 Low LevelWater Type
Surface Water
PFAS Detected
1
Above MCL
0
State
Kentucky
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBA Perfluorobutanoic acid | 7.90ppt | No federal limit | — | Unregulated |
Note: ZIP code 42431 is served by 4 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.