Sandwich
PWSID: IL0374850
System Details
| Population Served | 7,156 |
| Service Connections | 2,777 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Sandwich |
| Zip Code | 60548 |
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0063 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0056 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0035 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0023 mg/L | 0.015 mg/L | Below Action Level |
Violation History (2 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-07-02 | | Returned to Compliance |
| | 1994-10-01 | | Returned to Compliance |