ASSUMPTION
Illinois — Community Water System — PWSID: IL0210050
System Information
| PWSID | IL0210050 |
| System Name | ASSUMPTION |
| 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 | ASSUMPTION |
| ZIP Code | 62510 |
| Address | P.O. Box #81 |
| Organization | DUNCAN, JOHN A. |
| Phone | 217-820-0914 |
Population & Service
| Population Served | 1,315 |
| Service Connections | 622 |
Drinking Water Violations (62)
This water system has 62 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 13, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 13, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 13, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Aug 22, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Oct 1, 2024 | Dec 31, 2024 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Sep 1, 2024 | Sep 30, 2024 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2024 | — | |
| Jul 12, 2024 | — | Other | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Jul 12, 2024 | — | Other | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Jul 12, 2024 | — | Other | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Jul 12, 2024 | — | Other | No | No | — | — | — | Resolved | Dec 4, 2025 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| Jul 1, 2024 | Sep 30, 2024 | MCL | Yes | No | .091 MG/L | 0.080 mg/L | .08 | Resolved | Sep 30, 2024 | — | |
| 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 | — | |
| 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 | — | |
| Jun 21, 2023 | — | MR | No | No | — | 0.080 mg/L | — | Resolved | Jan 24, 2025 | — | |
| Jun 21, 2023 | — | MR | No | No | — | 0.080 mg/L | — | Resolved | Jan 24, 2025 | — | |
| Jun 21, 2023 | — | MR | No | No | — | 0.080 mg/L | — | Resolved | Jan 24, 2025 | — | |
| Jun 21, 2023 | — | MR | No | No | — | 0.080 mg/L | — | Resolved | Jan 24, 2025 | — | |
| Jun 21, 2023 | — | MR | No | No | — | 0.080 mg/L | — | Resolved | Jan 24, 2025 | — |
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.