COUNTY WATER-SYSTEM LEDGER
Dane, Wisconsin
EPA’s September 2026 export lists 18 active community water systems serving Dane, Wisconsin, with 7 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Dane, Wisconsin
EPA associates 18 covered systems with Dane, Wisconsin; their reported population-served values total 476,622 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Madison Water UtilityWI1130224 | 272,000 | Ground water | Other current violation flag |
| Sun Prairie UtilitiesWI1130258 | 39,300 | Ground water | No current violation flagged |
| Fitchburg Utility Dist 1WI1130231 | 24,500 | Ground water | No current violation flagged |
| Middleton WaterworksWI1130242 | 23,868 | Ground water | Other current violation flag |
| Waunakee WaterworksWI1130265 | 14,879 | Ground water | No current violation flagged |
| Verona WaterworksWI1130259 | 14,030 | Ground water | Other current violation flag |
| Stoughton WaterworksWI1130078 | 13,078 | Ground water | No current violation flagged |
| Oregon WaterworksWI1130251 | 11,200 | Ground water | No current violation flagged |
| Deforest WaterworksWI1130221 | 10,500 | Ground water | Other current violation flag |
| Mcfarland WaterworksWI1130241 | 9,676 | Ground water | No current violation flagged |
| Cottage Grove WaterworksWI1130218 | 9,345 | Ground water | Other current violation flag |
| Monona WaterworksWI1130245 | 8,624 | Ground water | No current violation flagged |
| Mt Horeb WaterworksWI1130247 | 7,756 | Ground water | Other current violation flag |
| Windsor Water Utility SouthWI1130267 | 4,607 | Ground water | No current violation flagged |
| Cross Plains WaterworksWI1130219 | 4,100 | Ground water | No current violation flagged |
| Marshall WaterworksWI1130237 | 3,862 | Ground water | No current violation flagged |
| Mendota Mental Health InstWI1130235 | 2,787 | Ground water | Other current violation flag |
| Deerfield WaterworksWI1130223 | 2,510 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Dane, Wisconsin
EPA classifies 18 systems serving Dane, Wisconsin across 1 primary-source categories; Ground water is the largest category with 18 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.