WASHINGTON MILLS
Illinois — Non-Transient Non-Community — PWSID: IL3117408
System Information
| PWSID | IL3117408 |
| System Name | WASHINGTON MILLS |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 23, 1986 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Illinois |
| City | HENNEPIN |
| ZIP Code | 61327 |
| Address | EXOLON COMPANY |
| Organization | FERRARI, ED |
| Phone | 815-925-7302 |
Population & Service
| Population Served | 65 |
| Service Connections | 1 |
Drinking Water Violations (237)
This water system has 237 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.7 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MON | No | Yes | — | — | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.6 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.075 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Apr 12, 2025 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2024 | Dec 31, 2024 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2024 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 2 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.006 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.004 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.05 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | Yes | — | 0.010 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2017 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.