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 | Feb 26, 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 (54)
This water system has 54 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, 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 | - | |
| 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 | - | |
| 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 | - | 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 | - | 0.05 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 | - | 0.005 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 | - | |
| 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 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - | |
| Jun 1, 1983 | May 31, 1986 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1986 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 1, 1980 | May 31, 1983 | MCL | Yes | No | 4 | 2 mg/L | - | Archived | May 31, 1983 | - | |
| Jun 30, 1977 | Jun 29, 1981 | MR | No | No | - | 15 pCi/L | - | Archived | Jun 29, 1981 | - |
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.