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 | Dec 4, 2025 |
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 (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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | Jul 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2005 | Total Coliform Rule |
| Jul 1, 2005 | Sep 30, 2005 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Sep 30, 2005 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Sep 30, 2005 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2005 | Sep 30, 2005 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Aug 15, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Aug 1, 2000 | Aug 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2000 | Total Coliform Rule |
| Aug 1, 2000 | Aug 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2000 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1999 | Total Coliform Rule |
| Aug 1, 1999 | Aug 31, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1999 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Oct 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1993 | Total Coliform Rule |
| Jun 30, 1977 | Jun 29, 1981 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Jun 29, 1981 | Radionuclides and Revised Rad 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.