MAHOMET
Illinois — Community Water System — PWSID: IL0190450
System Information
| PWSID | IL0190450 |
| System Name | MAHOMET |
| 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 | Dec 4, 2025 |
Location & Contact
| State | Illinois |
| City | MAHOMET |
| ZIP Code | 61853 |
| Address | VILLAGE OF MAHOMET |
| Organization | BROWN, PATRICK J. |
| Phone | 217-586-4456 |
Population & Service
| Population Served | 6,580 |
| Service Connections | 2,600 |
Drinking Water Violations (22)
This water system has 22 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 1, 2025 | Feb 28, 2025 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2025 | Revised Total Coliform Rule |
| Feb 1, 2025 | Feb 28, 2025 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2025 | Revised Total Coliform Rule |
| Feb 1, 2025 | Feb 28, 2025 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2025 | Revised Total Coliform Rule |
| Feb 1, 2025 | Feb 28, 2025 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Feb 28, 2025 | Revised Total Coliform Rule |
| Feb 1, 2025 | Feb 28, 2025 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 28, 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2025 | Feb 28, 2025 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 28, 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2025 | Feb 28, 2025 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 28, 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2025 | Feb 28, 2025 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 28, 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Feb 1, 2025 | Feb 28, 2025 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Feb 28, 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 10, 2024 | Consumer Confidence Rule |
| Jul 1, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 10, 2024 | Consumer Confidence Rule |
| Feb 1, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 23, 2022 | Lead and Copper Rule |
| Feb 1, 2022 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Mar 23, 2022 | Lead and Copper Rule |
| Jul 1, 2011 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 27, 2012 | Consumer Confidence Rule |
| Jul 1, 2011 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 27, 2012 | Consumer Confidence Rule |
| Sep 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | Total Coliform Rule |
| Sep 1, 2000 | Sep 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 2000 | Total Coliform Rule |
| Oct 1, 1994 | Oct 31, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Oct 31, 1994 | Total Coliform Rule |
| Oct 1, 1994 | Oct 31, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Oct 31, 1994 | Total Coliform Rule |
| Jan 1, 1994 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Aug 26, 1994 | Lead and Copper Rule |
| Jan 1, 1994 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Aug 26, 1994 | Lead and Copper Rule |
| Jun 30, 1977 | Jun 29, 1981 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Jun 29, 1981 | Radionuclides and Revised Rad Rule |
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.