Population Served
40.7K
Service Connections
14.1K
Total Violations
54
Health-Based Violations
22
Lead & Copper Data
Lead Level
Elevated9.30 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-06-30
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Groundwater
- System Type
- Community Water System
- City
- CRYSTAL LAKE
- ZIP Code
- 60014
- Counties Served
- McHenry
- Cities Served
- CRYSTAL LAKE
- Open Violations
- 0
- State
- Illinois
Violation Summary
54
Total Violations
22
Health-Based
0
Open Now
Most recent violation: 1996-07-01
Explore Illinois Water Quality
See all water systems, lead data, and violation trends for Illinois.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: IL1110150.SafeWater Home