CRYSTAL LAKE
Illinois - Community Water System - PWSID: IL1110150
System Information
| PWSID | IL1110150 |
| System Name | CRYSTAL LAKE |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | May 27, 2026 |
Location & Contact
| State | Illinois |
| City | CRYSTAL LAKE |
| ZIP Code | 60014 |
| Address | 100 WEST WOODSTOCK STREET |
| Organization | MAGNUSON, MICHAEL P. |
| Phone | 815-356-3611 |
Population & Service
| Population Served | 40,661 |
| Service Connections | 14,101 |
Drinking Water Violations (66)
This water system has 66 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, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.0004 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.04 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.004 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.001 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | - | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.4 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.006 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | Yes | - | 0.003 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1996 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.05 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 2 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.010 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 10 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 10 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 10 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 10 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.002 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.002 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.005 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.002 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.05 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.05 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.05 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.005 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.1 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.1 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.1 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.1 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 4.0 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 4.0 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 4.0 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 4.0 mg/L | - | Archived | Oct 27, 1989 | - | |
| Oct 28, 1986 | Oct 27, 1989 | MR | No | No | - | 0.002 mg/L | - | Archived | Oct 27, 1989 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1986 | May 31, 1989 | MCL | Yes | No | 4 | 2 mg/L | - | Resolved | Sep 29, 1987 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - |
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.