GRASS LAKE MARINA
Illinois — Transient Non-Community — PWSID: IL3120782
System Information
| PWSID | IL3120782 |
| System Name | GRASS LAKE MARINA |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Mixed |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 13, 1988 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Illinois |
| City | ANTIOCH |
| ZIP Code | 60002 |
| Address | 26250 W. Heart O Lakes Blvd |
| Organization | RONKOSKE, MIKE |
| Phone | — |
Population & Service
| Population Served | 100 |
| Service Connections | 1 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2022 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jul 1, 2021 | — | TT | Yes | No | — | — | — | Resolved | Oct 6, 2022 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2021 | Dec 31, 2021 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2008 | — | |
| Apr 1, 1994 | Jun 30, 1994 | MR | No | No | — | 5% of samples | — | Archived | Jun 30, 1994 | — |
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.