RIVERDALE SCHOOL DISTRICT #100
Illinois - Non-Transient Non-Community - PWSID: IL3113985
System Information
| PWSID | IL3113985 |
| System Name | RIVERDALE SCHOOL DISTRICT #100 |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Mixed |
| EPA Region | 05 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Dec 16, 1985 |
| Last Reported | May 29, 2026 |
Location & Contact
| State | Illinois |
| City | PORT BYRON |
| ZIP Code | 61275 |
| Address | 9624-256TH ST N |
| Organization | JACOBS, RON |
| Phone | 304-523-3184 |
Population & Service
| Population Served | 1,340 |
| Service Connections | 5 |
Drinking Water Violations (398)
This water system has 398 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 26, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Feb 26, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Feb 21, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Feb 21, 2026 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Dec 31, 2025 | - | MR | No | No | - | TT | - | Resolved | Mar 24, 2025 | - | |
| Dec 31, 2025 | - | MR | No | No | - | TT | - | Resolved | Mar 24, 2025 | - | |
| Dec 31, 2025 | - | MR | No | No | - | TT | - | Resolved | Mar 24, 2025 | - | |
| Oct 1, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 15, 2025 | - | |
| Oct 1, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 15, 2025 | - | |
| Oct 1, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 15, 2025 | - | |
| Oct 1, 2025 | - | RPT | No | No | - | - | - | Resolved | Dec 15, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 23, 2025 | - | |
| Sep 1, 2025 | Sep 30, 2025 | MON | No | Yes | - | - | - | Resolved | Sep 23, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 31, 2025 | - | |
| Jun 7, 2025 | - | Other | No | No | - | - | - | Resolved | Aug 8, 2025 | - | |
| Jun 7, 2025 | - | Other | No | No | - | - | - | Resolved | Aug 8, 2025 | - | |
| Jun 6, 2025 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Jun 6, 2025 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Apr 5, 2025 | - | Other | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Apr 5, 2025 | - | Other | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Dec 21, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Dec 21, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Dec 4, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Dec 4, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Nov 1, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Nov 1, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2026 | - | |
| Oct 27, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 29, 2025 | - | |
| Oct 27, 2024 | - | TT | Yes | No | - | - | - | Resolved | Jan 29, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Resolved | May 29, 2025 | - | |
| Oct 12, 2024 | - | MR | No | Yes | - | - | - | Resolved | May 27, 2025 | - |
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.