TANNERON BAY HOMEOWNERS ASSOCIATION
Illinois — Community Water System — PWSID: IL0971130
System Information
| PWSID | IL0971130 |
| System Name | TANNERON BAY HOMEOWNERS ASSOCIATION |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 5, 1997 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | VERNON HILLS |
| ZIP Code | 60061 |
| Address | GEWALT HAMILTON ASSOC, INC |
| Organization | ULLRICH, ROBERT |
| Phone | 847-478-9700 |
Population & Service
| Population Served | 256 |
| Service Connections | 86 |
Drinking Water Violations (73)
This water system has 73 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 1, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | Jul 31, 2023 | — | |
| Mar 1, 2022 | — | TT | Yes | No | — | TT | — | Resolved | Mar 2, 2022 | — | |
| Mar 1, 2022 | — | TT | Yes | No | — | TT | — | Resolved | Mar 2, 2022 | — | |
| Jul 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2022 | — | |
| Jul 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2022 | — | |
| Jul 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2022 | — | |
| Jul 1, 2021 | — | MR | No | No | — | TT | — | Resolved | Feb 10, 2022 | — | |
| Apr 1, 2001 | Apr 30, 2001 | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 2001 | — | |
| Apr 1, 2001 | Apr 30, 2001 | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 2001 | — | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | No | — | 5% of samples | — | Archived | Feb 28, 2001 | — | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | No | — | 5% of samples | — | Archived | Feb 28, 2001 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — | |
| Apr 1, 1998 | Jun 30, 1998 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 1998 | — |
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.