LAKE MILLS WATERWORKS
Wisconsin — Community Water System — PWSID: WI1280108
System Information
| PWSID | WI1280108 |
| System Name | LAKE MILLS 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 | Dec 17, 2025 |
Location & Contact
| State | Wisconsin |
| City | LAKE MILLS |
| ZIP Code | 53551-1632 |
| Address | 200D WATER ST |
| Organization | QUEST, MISTY - LAKE MILLS CITY CLERK |
| Phone | — |
Population & Service
| Population Served | 6,211 |
| Service Connections | 2,607 |
Drinking Water Violations (124)
This water system has 124 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 17, 2022 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 26, 2022 | Lead and Copper Rule |
| Sep 17, 2022 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 26, 2022 | Lead and Copper Rule |
| Sep 17, 2022 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 26, 2022 | Lead and Copper Rule |
| Sep 17, 2022 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Oct 26, 2022 | Lead and Copper Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2020 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 13, 2020 | Consumer Confidence Rule |
| Jan 1, 2018 | — | Public Notice | Other | No | No | — | — | — | Resolved | Mar 15, 2018 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2018 | — | Public Notice | Other | No | No | — | — | — | Resolved | Mar 15, 2018 | Public Notice Rule and Revised PN Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 27, 2018 | Lead and Copper Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 27, 2018 | Lead and Copper Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 27, 2018 | Lead and Copper Rule |
| Oct 1, 2017 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 27, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | Sep 30, 2017 | Combined Radium (-226 and -228) | MCL | Yes | No | 5.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | Radionuclides and Revised Rad Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2018 | Lead and Copper Rule |
| Jul 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2018 | Lead and Copper Rule |
| Jun 23, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Dec 27, 2017 | Public Notice Rule and Revised PN Rule |
| Jun 23, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Dec 27, 2017 | Public Notice Rule and Revised PN Rule |
| Apr 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 29, 2017 | Lead and Copper Rule |
| Apr 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 29, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Jun 22, 2017 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2017 | — | Public Notice | Other | No | No | — | — | — | Resolved | Jun 22, 2017 | Public Notice Rule and Revised PN Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | Jun 30, 2017 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 30, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
| Jan 1, 2017 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 6, 2017 | Lead and Copper Rule |
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.