Population Served
22.3K
Service Connections
8.5K
Total Violations
101
Health-Based Violations
4
Lead & Copper Data
Lead Level
Elevated6.30 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
- MCHENRY
- ZIP Code
- 60050
- Counties Served
- McHenry
- Cities Served
- MCHENRY
- Open Violations
- 0
- State
- Illinois
Violation Summary
101
Total Violations
4
Health-Based
0
Open Now
Most recent violation: 2025-07-01
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: IL1110600.SafeWater Home