MOUNT VERNON
Illinois - Community Water System - PWSID: IL0810300
System Information
| PWSID | IL0810300 |
| System Name | MOUNT VERNON |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | MOUNT VERNON |
| ZIP Code | 62864 |
| Address | 1100 Main Street |
| Organization | MCKENNA, NATHAN |
| Phone | 618-242-6802 |
Population & Service
| Population Served | 15,793 |
| Service Connections | 6,655 |
Drinking Water Violations (39)
This water system has 39 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, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 6, 2024 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 6, 2024 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 14, 2021 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 14, 2021 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 24, 2017 | - | |
| Jul 1, 2017 | - | Other | No | No | - | - | - | Resolved | Jul 24, 2017 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2007 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Sep 23, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Sep 23, 2005 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Jul 23, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Jul 23, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Jul 23, 2004 | - | |
| Jun 1, 2000 | Jun 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 2000 | - | |
| Jun 1, 2000 | Jun 30, 2000 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 2000 | - | |
| May 23, 1990 | May 22, 1991 | MCL | Yes | No | 116.041 | 0.080 mg/L | - | Resolved | Oct 1, 1990 | - | |
| May 23, 1990 | May 22, 1991 | MCL | Yes | No | 116.041 | 0.080 mg/L | - | Resolved | Oct 1, 1990 | - | |
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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.