SHANNON
Illinois — Community Water System — PWSID: IL0150300
System Information
| PWSID | IL0150300 |
| System Name | SHANNON |
| 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 | SHANNON |
| ZIP Code | 61078 |
| Address | Village of Shannon |
| Organization | WILSON, PERRI |
| Phone | 815-297-7023 |
Population & Service
| Population Served | 801 |
| Service Connections | 390 |
Drinking Water Violations (391)
This water system has 391 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 1, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 1, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 1, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 1, 2023 | — | |
| Sep 29, 2022 | — | MR | No | No | — | TT | — | Resolved | Oct 5, 2022 | — | |
| Sep 29, 2022 | — | MR | No | No | — | TT | — | Resolved | Oct 5, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Aug 1, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Aug 1, 2022 | — | |
| Dec 30, 2020 | — | MR | No | No | — | TT | — | Resolved | Jan 20, 2021 | — | |
| Dec 30, 2020 | — | MR | No | No | — | TT | — | Resolved | Jan 20, 2021 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | 17 PCI/L | 15 pCi/L | 15 | Resolved | Jun 30, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 9 PCI/L | 5 pCi/L | 5 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | 16 PCI/L | 15 pCi/L | 15 | Resolved | Mar 31, 2020 | — |
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.