THREE LAKES SANITARY DISTRICT
Wisconsin — Community Water System — PWSID: WI7440129
System Information
| PWSID | WI7440129 |
| System Name | THREE LAKES SANITARY DISTRICT |
| 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 | THREE LAKES |
| ZIP Code | 54562-0325 |
| Address | 1861 S MICHIGAN ST |
| Organization | THREE LAKES SANITARY DISTRICT #1 |
| Phone | — |
Population & Service
| Population Served | 500 |
| Service Connections | 283 |
Drinking Water Violations (8)
This water system has 8 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, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 30, 2025 | Consumer Confidence Rule |
| Jul 1, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jul 30, 2025 | Consumer Confidence Rule |
| Mar 1, 2025 | Mar 31, 2025 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2025 | Revised Total Coliform Rule |
| Mar 1, 2025 | Mar 31, 2025 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2025 | Revised Total Coliform Rule |
| Mar 1, 2025 | Mar 31, 2025 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2025 | Revised Total Coliform Rule |
| Jan 16, 2025 | — | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 3, 2025 | Ground Water Rule |
| Jan 16, 2025 | — | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Mar 3, 2025 | Ground Water Rule |
| Nov 1, 2022 | Nov 30, 2022 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Nov 30, 2022 | Revised Total Coliform 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.