MOUNT OLIVE
Illinois — Community Water System — PWSID: IL1170700
System Information
| PWSID | IL1170700 |
| System Name | MOUNT OLIVE |
| 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 | AVISTON |
| ZIP Code | 62216 |
| Address | CERTOP INC |
| Organization | HORSTMANN, CHRISTOPHER L. |
| Phone | 618-973-0633 |
Population & Service
| Population Served | 2,193 |
| Service Connections | 1,034 |
Drinking Water Violations (275)
This water system has 275 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 26, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Dec 1, 2025 | Dec 31, 2025 | TT | Yes | No | — | — | — | Archived | Dec 31, 2025 | — | |
| Nov 1, 2025 | Nov 30, 2025 | TT | Yes | No | — | — | — | Archived | Nov 30, 2025 | — | |
| Nov 1, 2025 | Nov 30, 2025 | TT | Yes | No | — | — | — | Archived | Nov 30, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | TT | Yes | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | TT | Yes | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Jul 12, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Aug 12, 2025 | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Aug 12, 2025 | — | |
| Apr 1, 2025 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Jul 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Nov 20, 2024 | — | |
| Jul 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Nov 20, 2024 | — | |
| Jul 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Nov 20, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 23, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 23, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 23, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Jan 31, 2024 | MON | No | No | — | — | — | Resolved | Jan 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 23, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 11, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 18, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 18, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2024 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2024 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Feb 23, 2024 | — | |
| Nov 30, 2022 | — | MR | No | No | — | TT | — | Resolved | Jan 31, 2023 | — | |
| Nov 30, 2022 | — | MR | No | No | — | TT | — | Resolved | Jan 31, 2023 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| Jun 1, 2008 | Jun 30, 2008 | TT | Yes | No | — | — | — | Resolved | Jun 27, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| May 1, 2008 | May 31, 2008 | TT | Yes | No | — | — | — | Resolved | May 31, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Apr 1, 2008 | Apr 30, 2008 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2008 | — | |
| Mar 1, 2008 | Mar 31, 2008 | TT | Yes | No | — | — | — | Resolved | Mar 31, 2008 | — |
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.