LYONS
Illinois - Community Water System - PWSID: IL0311710
System Information
| PWSID | IL0311710 |
| System Name | LYONS |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | LYONS |
| ZIP Code | 60534 |
| Address | 4200 S LAWNDALE AVE |
| Organization | SHEAHAN, THOMAS |
| Phone | 708-442-4500 |
Population & Service
| Population Served | 10,304 |
| Service Connections | 2,975 |
Drinking Water Violations (38)
This water system has 38 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 2, 2025 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Jul 2, 2025 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Sep 4, 2020 | - | |
| Jul 1, 2020 | - | Other | No | No | - | - | - | Resolved | Sep 4, 2020 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 1998 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 1998 | - | |
| Jul 1, 1997 | Dec 31, 1997 | MR | No | No | - | TT | - | Resolved | Dec 31, 1997 | - | |
| Apr 1, 1997 | Jun 30, 1997 | MR | No | No | - | TT | - | Resolved | Jun 30, 1997 | - | |
| Jan 1, 1997 | Mar 31, 1997 | MR | No | No | - | TT | - | Resolved | Mar 31, 1997 | - | |
| Jan 1, 1996 | - | TT | Yes | No | - | TT | - | Resolved | Mar 3, 1997 | - | |
| Jan 1, 1996 | - | TT | Yes | No | - | TT | - | Resolved | Mar 3, 1997 | - | |
| Jan 1, 1996 | - | TT | Yes | No | - | TT | - | Resolved | Mar 3, 1997 | - | |
| Jan 1, 1994 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Jan 1, 1993 | - | TT | Yes | No | - | TT | - | Resolved | Feb 5, 1995 | - | |
| Dec 7, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 28, 1994 | - | |
| Dec 7, 1992 | - | TT | Yes | No | - | TT | - | Resolved | Jan 28, 1994 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1992 | - | |
| Mar 1, 1991 | Mar 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Mar 31, 1991 | - | |
| Mar 1, 1991 | Mar 31, 1991 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 1991 | - | |
| Mar 1, 1991 | Mar 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Mar 31, 1991 | - | |
| Mar 1, 1991 | Mar 31, 1991 | MR | No | No | - | 5% of samples | - | Archived | Mar 31, 1991 | - | |
| Jun 30, 1977 | Jun 29, 1981 | MR | No | No | - | 15 pCi/L | - | Archived | Jun 29, 1981 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.