Population Served
46.6K
Service Connections
18.5K
Total Violations
102
Health-Based Violations
44
Lead & Copper Data
Lead Level
Safe0.00 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Purchased Surface Water
- System Type
- Community Water System
- City
- O'FALLON
- ZIP Code
- 62269
- Counties Served
- St. Clair
- Cities Served
- O FALLON
- Open Violations
- 0
- State
- Illinois
Violation Summary
102
Total Violations
44
Health-Based
0
Open Now
Most recent violation: 2007-01-01
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: IL1631100.SafeWater Home