ST MARKS DAY SCHOOL
Illinois — Non-Transient Non-Community — PWSID: IL3117762
System Information
| PWSID | IL3117762 |
| System Name | ST MARKS DAY SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Nov 7, 1989 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Illinois |
| City | BARRINGTON HILLS |
| ZIP Code | 60010 |
| Address | 337 RIDGE ROAD |
| Organization | SANDS, M. DALE |
| Phone | 847-381-0596 |
Population & Service
| Population Served | 60 |
| Service Connections | 1 |
Drinking Water Violations (60)
This water system has 60 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 12, 2023 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Oct 1, 2014 | — | MR | No | No | — | TT | — | Resolved | Sep 14, 2015 | — | |
| Jul 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 2012 | — | |
| Jul 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 2012 | — | |
| Jul 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 2012 | — | |
| Jul 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 2012 | — | |
| Jul 1, 2012 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 2012 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | May 18, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | May 18, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | May 18, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | May 18, 2009 | — | |
| Jan 1, 2009 | — | MR | No | No | — | TT | — | Resolved | May 18, 2009 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.5 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.0005 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2001 | — |
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.