ONTONAGON
Michigan — Community Water System — PWSID: MI0005030
System Information
| PWSID | MI0005030 |
| System Name | ONTONAGON |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 3, 1981 |
| Last Reported | Dec 18, 2025 |
Location & Contact
| State | Michigan |
| City | ONTONAGON |
| ZIP Code | 49953 |
| Address | 315 QUARTZ ST |
| Organization | DUPONT, WILLIE |
| Phone | 906-884-2305 |
Population & Service
| Population Served | 2,607 |
| Service Connections | 870 |
Drinking Water Violations (19)
This water system has 19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2017 | Jun 30, 2017 | Interim Enhanced Surface Water Treatment Rule | MR | No | No | — | — | — | Resolved | Jun 30, 2017 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Jun 1, 2017 | Jun 30, 2017 | Interim Enhanced Surface Water Treatment Rule | MR | No | No | — | — | — | Resolved | Jun 30, 2017 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Jan 1, 2016 | Mar 31, 2016 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2016 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2016 | Mar 31, 2016 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2016 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 1993 | Aug 31, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 1993 | Total Coliform Rule |
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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.