DUQUOIN
Illinois - Community Water System - PWSID: IL1450100
System Information
| PWSID | IL1450100 |
| System Name | DUQUOIN |
| 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 | DUQUOIN |
| ZIP Code | 62832 |
| Address | P.O. Box 466 |
| Organization | HALE, RUTH |
| Phone | 618-542-3841 |
Population & Service
| Population Served | 7,169 |
| Service Connections | 3,039 |
Drinking Water Violations (63)
This water system has 63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 22, 2025 | - | Other | No | No | - | - | - | Resolved | Aug 25, 2025 | - | |
| Aug 22, 2025 | - | Other | No | No | - | - | - | Resolved | Aug 25, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 11, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 11, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 11, 2025 | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 11, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | No | - | - | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | No | - | - | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | No | - | - | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MON | No | No | - | - | - | Resolved | Jul 31, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 28, 2021 | - | |
| Dec 30, 2020 | - | MR | No | No | - | TT | - | Resolved | Jan 28, 2021 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2015 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Jul 28, 2015 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Feb 28, 1998 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1993 | - | |
| Apr 1, 1993 | - | MR | No | No | - | TT | - | Resolved | Sep 27, 1993 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MR | No | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.