ZIP Code 47231
High RiskPFAS above EPA limits detected
1 compound exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
3
PFAS Detected
1
Above EPA Limits
2
Water Systems
115%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 115% of limit
Detected: 4.60 ppt
MADISON WATER DEPARTMENT, IN
IN5239006 High RiskWater Type
Groundwater
PFAS Detected
2
Above MCL
1
State
Indiana
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOA Perfluorooctanoic acid | 4.60ppt | 115% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFBS Perfluorobutane sulfonic acid | 8.50ppt | No federal limit | — | Unregulated |
DUPONT WATER COMPANY
IN5240004 Low LevelWater Type
Groundwater
PFAS Detected
1
Above MCL
0
State
Indiana
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFBS Perfluorobutane sulfonic acid | 4.50ppt | No federal limit | — | Unregulated |
Note: ZIP code 47231 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.