Theresa Waterworks
PWSID: WI1140154
System Details
| Population Served | 1,262 |
| Service Connections | 569 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Theresa |
| Zip Code | 53091-0327 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0011 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0007 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0005 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2024-10-17 | Yes | Open |
| | 2024-10-17 | | Open |
Violation History (12 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-09-03 | Yes | Returned to Compliance |
| | 2019-07-01 | | Returned to Compliance |
| | 2019-07-01 | | Returned to Compliance |
| | 2018-10-01 | | Returned to Compliance |
| | 2018-07-01 | | Returned to Compliance |
| | 2018-07-01 | | Returned to Compliance |
| | 2018-01-01 | | Returned to Compliance |
| | 2018-01-01 | | Returned to Compliance |
| | 2018-01-01 | | Returned to Compliance |
| | 2017-09-01 | Major | Returned to Compliance |