MOUNT STERLING WATERWORKS
Wisconsin — Community Water System — PWSID: WI6120246
System Information
| PWSID | WI6120246 |
| System Name | MOUNT STERLING 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 | MT STERLING |
| ZIP Code | 54645-0067 |
| Address | 155 SECOND ST |
| Organization | JONES, KIMBERLY - MT STERLING VIL CLERK |
| Phone | — |
Population & Service
| Population Served | 206 |
| Service Connections | 76 |
Drinking Water Violations (105)
This water system has 105 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2025 | Sep 30, 2025 | MON | No | No | — | — | — | Resolved | Sep 30, 2025 | — | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | No | — | — | — | Resolved | Sep 30, 2025 | — | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | No | — | — | — | Resolved | Sep 30, 2025 | — | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | No | — | — | — | Resolved | Sep 30, 2025 | — | |
| Dec 11, 2024 | — | TT | Yes | No | — | TT | — | Resolved | Jul 3, 2025 | — | |
| Dec 11, 2024 | — | TT | Yes | No | — | TT | — | Resolved | Jul 3, 2025 | — | |
| Dec 11, 2024 | — | TT | Yes | No | — | TT | — | Resolved | Jul 3, 2025 | — | |
| Dec 11, 2024 | — | TT | Yes | No | — | TT | — | Resolved | Jul 3, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jun 25, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jun 25, 2025 | — | |
| Oct 17, 2024 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jun 25, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jun 25, 2025 | — | |
| Oct 17, 2024 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | No | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | No | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | No | — | — | — | Resolved | Jul 31, 2024 | — | |
| Jul 1, 2024 | Jul 31, 2024 | MON | No | No | — | — | — | Resolved | Jul 31, 2024 | — | |
| May 2, 2024 | — | TT | Yes | No | — | — | — | Resolved | May 22, 2024 | — | |
| May 2, 2024 | — | TT | Yes | No | — | — | — | Resolved | May 22, 2024 | — | |
| Jan 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jan 24, 2024 | — | |
| Jan 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Jan 24, 2024 | — | |
| Oct 1, 2023 | — | TT | Yes | No | — | TT | — | Resolved | Jan 30, 2024 | — | |
| Oct 1, 2023 | — | TT | Yes | No | — | TT | — | Resolved | Jan 30, 2024 | — | |
| Oct 1, 2023 | — | TT | Yes | No | — | TT | — | Resolved | Jan 30, 2024 | — | |
| Oct 1, 2023 | — | TT | Yes | No | — | TT | — | Resolved | Jan 30, 2024 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Jun 1, 2023 | Nov 30, 2023 | MR | No | No | — | TT | — | Resolved | Nov 30, 2023 | — | |
| Sep 1, 2017 | — | Other | No | No | — | — | — | Resolved | Nov 15, 2018 | — | |
| Sep 1, 2017 | — | Other | No | No | — | — | — | Resolved | Nov 15, 2018 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 2015 | — | |
| Jan 1, 2015 | Dec 31, 2015 | MR | No | No | — | 0.080 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jan 1, 2015 | Dec 31, 2015 | MR | No | No | — | 0.060 mg/L | — | Resolved | Dec 31, 2015 | — |
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.