ONARGA
Illinois - Community Water System - PWSID: IL0750700
System Information
| PWSID | IL0750700 |
| System Name | ONARGA |
| 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 | ONARGA |
| ZIP Code | 60955 |
| Address | VILLAGE OF ONARGA |
| Organization | HAMILTON, TIM |
| Phone | 815-268-7311 |
Population & Service
| Population Served | 1,409 |
| Service Connections | 500 |
Drinking Water Violations (33)
This water system has 33 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 16, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 3, 2024 | - | |
| Oct 16, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 3, 2024 | - | |
| Oct 16, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 3, 2024 | - | |
| Oct 16, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 3, 2024 | - | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2023 | - | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2023 | - | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2023 | - | |
| Aug 1, 2023 | Aug 31, 2023 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 25, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 25, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 25, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 25, 2023 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Feb 15, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Feb 15, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Feb 15, 2022 | - | |
| Jul 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Feb 15, 2022 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2020 | - | |
| Oct 1, 2000 | Dec 31, 2000 | MR | No | No | - | TT | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 1994 | - | TT | Yes | No | - | TT | - | Resolved | Jan 25, 1995 | - | |
| Jun 30, 1977 | Jun 29, 1981 | MR | No | No | - | 15 pCi/L | - | Archived | Jun 29, 1981 | - | |
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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.