COLP
Illinois — Community Water System — PWSID: IL1990200
System Information
| PWSID | IL1990200 |
| System Name | COLP |
| 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 | COLP |
| ZIP Code | 62921 |
| Address | PO BOX 266 |
| Organization | CLARK, MARCELLA |
| Phone | 618-944-1890 |
Population & Service
| Population Served | 506 |
| Service Connections | 272 |
Drinking Water Violations (54)
This water system has 54 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 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Unaddressed | — | — | |
| Jul 11, 2024 | — | Other | No | No | — | — | — | Resolved | Jun 1, 2023 | — | |
| Jul 11, 2024 | — | Other | No | No | — | — | — | Resolved | Jun 1, 2023 | — | |
| Jul 1, 2024 | — | Other | No | No | — | — | — | Resolved | Jul 1, 2025 | — | |
| Jul 1, 2024 | — | Other | No | No | — | — | — | Resolved | Jul 1, 2025 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 1, 2025 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 1, 2025 | — | |
| 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 | — | |
| Jul 1, 2019 | — | Other | No | No | — | — | — | Resolved | Nov 22, 2019 | — | |
| Jul 1, 2019 | — | Other | No | No | — | — | — | Resolved | Nov 22, 2019 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 30, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 30, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 30, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 30, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Sep 28, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Sep 28, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Sep 28, 2014 | — | |
| Oct 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Sep 28, 2014 | — | |
| Jul 1, 2011 | — | Other | No | No | — | — | — | Resolved | Oct 24, 2011 | — | |
| Jul 1, 2011 | — | Other | No | No | — | — | — | Resolved | Oct 24, 2011 | — | |
| Dec 14, 2004 | — | TT | Yes | No | — | TT | — | Resolved | Oct 16, 2007 | — | |
| Dec 14, 2004 | — | TT | Yes | No | — | TT | — | Resolved | Oct 16, 2007 | — | |
| Dec 14, 2004 | — | TT | Yes | No | — | TT | — | Resolved | Oct 16, 2007 | — | |
| Dec 14, 2004 | — | TT | Yes | No | — | TT | — | Resolved | Oct 16, 2007 | — | |
| Dec 14, 2004 | — | TT | Yes | No | — | TT | — | Resolved | Oct 16, 2007 | — | |
| Jun 30, 1977 | Jun 29, 1981 | MR | No | No | — | 15 pCi/L | — | Archived | Jun 29, 1981 | — | |
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| — | — | — | 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.