Advisory
Routine Maintenance on outdoor warning sirens
Routine Maintenance on outdoor warning sirens 
We have been informed that routine maintenance will be conducted on the outdoor warning sirens today and tomorrow. Testing will take place from now until 2:30 PM each day.
Please do not be alarmed if you hear the sirens during these times. This is a standard procedure to ensure the systems are functioning properly.
Thank you for your understanding and cooperation!
Address/Location
City of Crystal Lake
100 W Woodstock St
Crystal Lake, IL 60014
Contact
Emergency: 9-1-1
Non-emergencies: 815-356-3620