GRATIOT WATERWORKS
PWS ID: WI1330074 · GRATIOT, Wisconsin 53541-0189
Population Served
224
Total Violations
305
Health-Based Violations
34
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 82
- County
- Lafayette
- School/Daycare
- No
- MCL Violations
- 25
- Monitoring Violations
- 266
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 25 | 2013 |
| Coliform (TCR) | MR | 23 | 2014 |
| Revised Total Coliform Rule | MON | 10 | 2025 |
| Lead and Copper Rule | MR | 8 | 2023 |
| Groundwater Rule | TT | 8 | 2023 |
| Chlorine | MR | 7 | 2014 |
| Endrin | MR | 6 | 2023 |
| HEXACHLOROBENZENE | MR | 6 | 2023 |
| 2,4,5-TP | MR | 6 | 2023 |
| Heptachlor | MR | 6 | 2023 |
| Atrazine | MR | 6 | 2023 |
| Methoxychlor | MR | 6 | 2023 |
| BHC-GAMMA | MR | 6 | 2023 |
| Toxaphene | MR | 6 | 2023 |
| Dalapon | MR | 6 | 2023 |
| OXAMYL | MR | 6 | 2023 |
| Heptachlor epoxide | MR | 6 | 2023 |
| 2,4-D | MR | 6 | 2023 |
| Chlordane | MR | 6 | 2023 |
| Simazine | MR | 6 | 2023 |
| Pentachlorophenol | MR | 6 | 2023 |
| Hexachlorocyclopentadiene | MR | 6 | 2023 |
| Carbofuran | MR | 6 | 2023 |
| Dinoseb | MR | 6 | 2023 |
| LASSO | MR | 6 | 2023 |
| Picloram | MR | 6 | 2023 |
| TTHM | MR | 5 | 2013 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2013 |
| Radium-228 | MR | 4 | 2009 |
| Public Notice | Other | 4 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.