TOMAH WATERWORKS
Wisconsin — Community Water System — PWSID: WI6420254
System Information
| PWSID | WI6420254 |
| System Name | TOMAH 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 | TOMAH |
| ZIP Code | 54660-0151 |
| Address | 819 SUPERIOR AVE |
| Organization | CITY OF TOMAH |
| Phone | — |
Population & Service
| Population Served | 9,192 |
| Service Connections | 3,139 |
Drinking Water Violations (127)
This water system has 127 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 11.13 MG/L | 10 mg/L | 10.5 | Archived | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 11.13 MG/L | 10 mg/L | 10.5 | Archived | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 11.13 MG/L | 10 mg/L | 10.5 | Archived | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 11.13 MG/L | 10 mg/L | 10.5 | Archived | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MCL | Yes | No | 11.13 MG/L | 10 mg/L | 10.5 | Archived | Jun 30, 2025 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | 6.95 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Jan 1, 2018 | Mar 31, 2018 | MCL | Yes | No | 7.33 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2018 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2017 | Dec 31, 2017 | MCL | Yes | No | 6.75 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Sep 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 6.35 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2017 | — | |
| Feb 15, 2017 | — | Other | No | No | — | — | — | Resolved | Jun 19, 2017 | — | |
| Feb 15, 2017 | — | Other | No | No | — | — | — | Resolved | Jun 19, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 6.13 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2017 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 6.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 6.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 6.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2016 | — | |
| Oct 1, 2016 | Dec 31, 2016 | MCL | Yes | No | 6.5 PCI/L | 5 pCi/L | 5.5 | Resolved | Dec 31, 2016 | — |
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.