Monona Waterworks
PWSID WI1130245 · Monona, Wisconsin · serves 8,624 people · groundwater source
A
Excellent
PFAS test results (EPA UCMR 5)
| Contaminant | Result | Federal limit (MCL) | Sampled |
|---|---|---|---|
| PFBA | 11 ppt | — | 6/17/2025 |
| PFBA | 11 ppt | — | 12/8/2025 |
| PFBA | 6.1 ppt | — | 6/17/2025 |
| PFBA | 6 ppt | — | 12/8/2025 |
| PFHxS | 5.4 ppt | 10 ppt | 6/17/2025 |
| PFBS | 5.3 ppt | — | 6/17/2025 |
| PFHxS | 5.3 ppt | 10 ppt | 6/17/2025 |
| PFHxS | 4.8 ppt | 10 ppt | 12/8/2025 |
| PFHxS | 4.8 ppt | 10 ppt | 12/8/2025 |
| PFBS | 4.7 ppt | — | 12/8/2025 |
| PFPeA | 4.6 ppt | — | 6/17/2025 |
| PFPeA | 4.4 ppt | — | 12/8/2025 |
| PFHxA | 4.2 ppt | — | 6/17/2025 |
| PFBS | 4.2 ppt | — | 6/17/2025 |
| PFBS | 4.1 ppt | — | 12/8/2025 |
| PFHxA | 3.7 ppt | — | 12/8/2025 |
ppt = parts per trillion (ng/L). Rows highlighted red meet or exceed the 2024 federal limit.
Violation history
No violations on record in the period covered. 🎉