JOLIET
Illinois - Community Water System - PWSID: IL1970450
System Information
| PWSID | IL1970450 |
| System Name | JOLIET |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1981 |
| Last Reported | Feb 26, 2026 |
Location & Contact
| State | Illinois |
| City | JOLIET |
| ZIP Code | 60432 |
| Address | 150 W. Jefferson Street |
| Organization | SWISHER, ALLISON |
| Phone | 815-724-4222 |
Population & Service
| Population Served | 160,000 |
| Service Connections | 49,000 |
Drinking Water Violations (384)
This water system has 384 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 15, 2025 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | No | - | 0.0005 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | No | - | 0.0005 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | No | - | 0.0005 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2023 | Dec 31, 2025 | MR | No | No | - | 0.0005 mg/L | - | Archived | Dec 31, 2025 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2018 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2018 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2018 | - | |
| Oct 1, 2017 | - | MR | No | No | - | TT | - | Resolved | Jul 19, 2018 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2017 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 17 PCI/L | 5 pCi/L | 5 | Resolved | Dec 31, 2007 | - | |
| Aug 1, 2007 | Aug 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2007 | - | |
| Aug 1, 2007 | Aug 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 24, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 24, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 16 PCI/L | 5 pCi/L | 5 | Resolved | Sep 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 18 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 18 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 18 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 18 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2007 | - | |
| Apr 1, 2007 | Jun 30, 2007 | MCL | Yes | No | 18 PCI/L | 5 pCi/L | 5 | Resolved | Jun 30, 2007 | - |
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.