DIAMOND LAKE SCHOOL
Illinois — Non-Transient Non-Community — PWSID: IL3086868
System Information
| PWSID | IL3086868 |
| System Name | DIAMOND LAKE SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Jun 18, 1981 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Illinois |
| City | MUNDELEIN |
| ZIP Code | 60060 |
| Address | 25807 DIAMOND LAKE RD. |
| Organization | STYSKAL, THEODORE |
| Phone | 847-566-6601 |
Population & Service
| Population Served | 350 |
| Service Connections | 1 |
Drinking Water Violations (55)
This water system has 55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Resolved | Oct 14, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Mar 31, 2025 | — | |
| Mar 26, 2024 | — | MR | No | No | — | TT | — | Resolved | Sep 12, 2024 | — | |
| Mar 26, 2024 | — | MR | No | No | — | TT | — | Resolved | Sep 12, 2024 | — | |
| Sep 2, 2021 | — | MR | No | No | — | TT | — | Resolved | Nov 2, 2021 | — | |
| Sep 2, 2021 | — | MR | No | No | — | TT | — | Resolved | Nov 2, 2021 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.7 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.7 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.6 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.6 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 10 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 10 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.075 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Mar 31, 1996 | — | |
| Jan 1, 1996 | Mar 31, 1996 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Mar 31, 1996 | — |
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.