Population Served
25.6K
Service Connections
9.0K
Total Violations
35
Health-Based Violations
10
Lead & Copper Data
Lead Level
Elevated11.00 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
1500 ppb
Action Level: 1,300 ppb (EPA) · Sampled: 2023-12-31
Copper action level exceeded
System Details
- Water Source
- Groundwater
- System Type
- Community Water System
- City
- WOODSTOCK
- ZIP Code
- 60098
- Counties Served
- McHenry
- Cities Served
- WOODSTOCK
- Open Violations
- 0
- State
- Illinois
Violation Summary
35
Total Violations
10
Health-Based
0
Open Now
Most recent violation: 2025-03-05
Explore Illinois Water Quality
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Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: IL1110950.SafeWater Home