ONSTED
Michigan — Community Water System — PWSID: MI0005020
System Information
| PWSID | MI0005020 |
| System Name | ONSTED |
| 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 | Feb 3, 1981 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Michigan |
| City | ONSTED |
| ZIP Code | 49265 |
| Address | 108 S MAIN ST |
| Organization | SCHAFER, ROBERT |
| Phone | 517-270-8344 |
Population & Service
| Population Served | 907 |
| Service Connections | 365 |
Drinking Water Violations (21)
This water system has 21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 11, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Jun 30, 2024 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Aug 1, 2019 | Jul 31, 2020 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2020 | — | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | — | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | — | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | — | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | — | |
| Oct 1, 2009 | Oct 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2009 | — | |
| Oct 1, 2009 | Oct 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2009 | — | |
| Oct 1, 2009 | Oct 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2009 | — |
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.