COG HILL COUNTRY CLUB
Illinois - Non-Transient Non-Community - PWSID: IL3088518
System Information
| PWSID | IL3088518 |
| System Name | COG HILL COUNTRY CLUB |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 18, 1981 |
| Last Reported | May 29, 2026 |
Location & Contact
| State | Illinois |
| City | LEMONT |
| ZIP Code | 60439 |
| Address | 12294 ARCHER AVENUE |
| Organization | NEWPORT, TROY |
| Phone | - |
Population & Service
| Population Served | 340 |
| Service Connections | 1 |
Drinking Water Violations (1,892)
This water system has 1,892 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 24, 2025 | - | MR | No | No | - | TT | - | Resolved | Jul 24, 2025 | - | |
| Sep 24, 2025 | - | MR | No | No | - | TT | - | Resolved | Jul 24, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 14, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 14, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 14, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 14, 2025 | - | |
| Jul 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 13, 2023 | - | |
| Jul 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 13, 2023 | - |
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.