MACKINAW
Illinois — Community Water System — PWSID: IL1790350
System Information
| PWSID | IL1790350 |
| System Name | MACKINAW |
| 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 13, 1981 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | MACKINAW |
| ZIP Code | 61755 |
| Address | 14684 KILLION ROAD |
| Organization | SCHOPP, MICHAEL E. |
| Phone | 309-392-2442 |
Population & Service
| Population Served | 3,399 |
| Service Connections | 1,345 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2005 | Jul 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | — | |
| Jul 1, 2005 | Jul 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | — | |
| Jul 1, 2005 | Jul 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | — | |
| Jul 1, 2005 | Jul 31, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | — | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | — | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2000 | — | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2000 | — | |
| Aug 1, 1999 | Aug 31, 1999 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1999 | — | |
| Aug 1, 1999 | Aug 31, 1999 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1999 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Oct 1, 1993 | Oct 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | — | |
| Jun 30, 1977 | Jun 29, 1981 | MR | No | No | — | 15 pCi/L | — | Archived | Jun 29, 1981 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.