MSD Chicago-Deep Tunnel Sys SW-4
Status not reported Other well
| API number | 12-031-00765 |
|---|---|
| Operator | Layne-Western Co. |
| County | Cook, Illinois |
| Permitted | 1968-01-09 |
| Completed | 1968-02-15 |
| Depth | 1,003 ft |
| Surface location | 41.589304, -87.581478 · wells within 1 mile |
| State record | Illinois State Geological Survey ↗ |
| Data as of | 2026-10-17 |
From Illinois State Geological Survey public records. Verify with the state before relying on this information.