ROCK FALLS
Illinois — Community Water System — PWSID: IL1950450
System Information
| PWSID | IL1950450 |
| System Name | ROCK FALLS |
| 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 | ROCK FALLS |
| ZIP Code | 61071 |
| Address | 603 WEST 10th STREET |
| Organization | BLACKERT, ROBBIN |
| Phone | 815-564-1366 |
Population & Service
| Population Served | 8,620 |
| Service Connections | 4,150 |
Drinking Water Violations (142)
This water system has 142 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | May 16, 2024 | — | |
| Jul 1, 2023 | — | Other | No | No | — | — | — | Resolved | May 16, 2024 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 22, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 22, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 22, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 22, 2023 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | No | — | — | — | Resolved | Dec 31, 2022 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | No | — | — | — | Resolved | Dec 31, 2022 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | No | — | — | — | Resolved | Dec 31, 2022 | — | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | No | — | — | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Jul 28, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Jul 28, 2022 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 2004 | — | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 2004 | — |
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.