ZIP Code 53716
Moderate7
PFAS Detected
0
Above EPA Limits
2
Water Systems
73%
Highest % of MCL
MADISON WATER UTILITY
WI1130224 Low LevelWater Type
Groundwater
PFAS Detected
2
Above MCL
0
State
Wisconsin
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 7.30ppt | 73% of limit
| 10 ppt | Below limit |
PFBA Perfluorobutanoic acid | 46.50ppt | No federal limit | — | Unregulated |
MONONA WATERWORKS
WI1130245 ModerateWater Type
Groundwater
PFAS Detected
5
Above MCL
0
State
Wisconsin
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFHxS Perfluorohexane sulfonic acid | 5.40ppt | 54% of limit
| 10 ppt | Below limit |
PFBA Perfluorobutanoic acid | 11.00ppt | No federal limit | — | Unregulated |
PFBS Perfluorobutane sulfonic acid | 5.30ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.60ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.20ppt | No federal limit | — | Unregulated |
Note: ZIP code 53716 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.