Water Quality: Madison, WI
17 water systems • 285,795 people served
Multiple Health Violations247
Total Violations
26
Health-Based Violations
17
Water Systems
285,795
Population Served
Water Quality Summary
Madison has 26 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Disinfection Byproducts, E. coli, Stage 2 DBP, Total Organic Carbon. In total, 247 violations are on record for 17 water systems serving 285,795 people.
Contaminants Found
Disinfection Byproducts
E. coli
Stage 2 DBP
Total Organic Carbon
Water Systems Serving Madison
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MADISON WATER UTILITY | WI1130224 | Groundwater | 272,000 | 4 |
| WAUPUN CORRECTIONAL INST | WI1140142 | Groundwater | 3,706 | 21 |
| MENDOTA MENTAL HEALTH INST | WI1130235 | Groundwater | 2,787 | 6 |
| FOX LAKE CORRECTIONAL INSTITUTION | WI1140144 | Groundwater | 1,850 | 16 |
| SHOREWOOD HILLS WATERWORKS | WI1130236 | Groundwater | 1,670 | 19 |
| KETTLE MORAINE CORRECTIONAL INSTITUTION | WI4600449 | Groundwater | 1,544 | 1 |
| MAPLE BLUFF WATERWORKS | WI1130234 | Groundwater | 1,342 | 8 |
| LAKE FOREST WATER COOP | WI1130232 | Groundwater | 400 | 60 |
| APPLEWOOD HILL | WI1130244 | Groundwater | 125 | 7 |
| GORDON CORRECTIONAL CENTER | WI8160142 | Groundwater | 124 | 13 |
| DELAFIELD LAKES 402 | WI2686101 | Groundwater | 50 | 14 |
| WOODBRIDGE ESTATES | WI1133471 | Groundwater | 48 | 16 |
| PINE RIDGE APTS | WI1132627 | Groundwater | 45 | 8 |
| DELAFIELD WOODS 411 | WI2686336 | Groundwater | 28 | 8 |
| DELAFIELD WOODS 828 | WI2686337 | Groundwater | 26 | 5 |
| PIRATES COVE MOBILE HOME COMMUNITY | WI1540118 | Groundwater | 25 | 33 |
| DELAFIELD LAKES 404 | WI2686114 | Groundwater | 25 | 8 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.