Walnut
PWSID: IL0111100
System Details
| Population Served | 1,311 |
| Service Connections | 608 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Walnut |
| Zip Code | 61376 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Copper (90th percentile) | 2.1100 mg/L | 1.300 mg/L | EXCEEDS Action Level |
| Copper (90th percentile) | 1.4600 mg/L | 1.300 mg/L | EXCEEDS Action Level |
| Lead (90th percentile) | 0.0054 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0050 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0048 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0032 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0029 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0014 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0013 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0013 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0013 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0011 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 |
Violation History (16 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2024-07-01 | | Returned to Compliance |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Acknowledged |
| | 2024-01-01 | Major | Returned to Compliance |
| | 2023-07-01 | | Returned to Compliance |
| | 2023-07-01 | | Returned to Compliance |
| | 2022-01-01 | | Returned to Compliance |
| | 2022-01-01 | | Returned to Compliance |
| | 2019-07-01 | Yes | Returned to Compliance |
| | 2019-07-01 | Yes | Returned to Compliance |
| | 2017-12-30 | | Returned to Compliance |
| | 2017-12-30 | | Returned to Compliance |
| | 2010-01-02 | | Returned to Compliance |