MADISON WATER UTILITY
Wisconsin - Community Water System - PWSID: WI1130224
System Information
| PWSID | WI1130224 |
| System Name | MADISON WATER UTILITY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | Wisconsin |
| City | MADISON |
| ZIP Code | 53713 |
| Address | 119 E OLIN |
| Organization | KUMAR, KRISHNA - GEN MGR |
| Phone | - |
Population & Service
| Population Served | 272,000 |
| Service Connections | 100,740 |
Drinking Water Violations (328)
This water system has 328 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 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Resolved | Dec 13, 2024 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | No | - | 0.060 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | No | - | 0.060 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | No | - | 0.060 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | No | - | 0.060 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Jan 1, 2004 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Mar 31, 2001 | - | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Mar 31, 2001 | - |
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.