HILLSBORO WATERWORKS
Wisconsin - Community Water System - PWSID: WI6630257
System Information
| PWSID | WI6630257 |
| System Name | HILLSBORO WATERWORKS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | Hillsboro |
| ZIP Code | 54634 |
| Address | CITY HALL- 123 MECHANIC ST |
| Organization | CITY OF HILLSBORO |
| Phone | - |
Population & Service
| Population Served | 1,325 |
| Service Connections | 661 |
Drinking Water Violations (93)
This water system has 93 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 12, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 12, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 31, 2023 | - | |
| Mar 11, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Mar 29, 2023 | - | |
| Mar 11, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Mar 29, 2023 | - | |
| Mar 11, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Mar 29, 2023 | - | |
| Mar 11, 2023 | - | TT | Yes | No | - | TT | - | Resolved | Mar 29, 2023 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Sep 17, 2021 | - | TT | Yes | No | - | TT | - | Resolved | Nov 4, 2021 | - | |
| Jul 1, 2019 | - | TT | Yes | No | - | TT | - | Resolved | Feb 25, 2020 | - | |
| Jul 1, 2019 | - | TT | Yes | No | - | TT | - | Resolved | Feb 25, 2020 | - | |
| Jul 1, 2019 | - | TT | Yes | No | - | TT | - | Resolved | Feb 25, 2020 | - | |
| Jul 1, 2019 | - | TT | Yes | No | - | TT | - | Resolved | Feb 25, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Dec 30, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | TT | Yes | No | - | - | - | Resolved | Feb 24, 2020 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - | |
| Jun 2, 2019 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2019 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.