Columbia
PWSID: IL1330050
System Details
| Population Served | 11,129 |
| Service Connections | 4,117 |
| Water Source | Surface Water Purchased |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Columbia |
| Zip Code | 62236 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0000 mg/L | 0.015 mg/L | Below Action Level |
2 Active Violations
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-07-01 | | Open |
| | 2025-07-01 | | Open |
Violation History (6 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2019-07-01 | | Returned to Compliance |
| | 2019-07-01 | | Returned to Compliance |
| | 2018-07-01 | | Returned to Compliance |
| | 2018-07-01 | | Returned to Compliance |