EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Dane, Wisconsin

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems18active CWS · pop. 2,500+
Population served476,622reported total; may overlap
Current violation flag38.9%7 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Dane

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Madison Water UtilityWI1130224272,000Ground waterOther current violation flag
Sun Prairie UtilitiesWI113025839,300Ground waterNo current violation flagged
Fitchburg Utility Dist 1WI113023124,500Ground waterNo current violation flagged
Middleton WaterworksWI113024223,868Ground waterOther current violation flag
Waunakee WaterworksWI113026514,879Ground waterNo current violation flagged
Verona WaterworksWI113025914,030Ground waterOther current violation flag
Stoughton WaterworksWI113007813,078Ground waterNo current violation flagged
Oregon WaterworksWI113025111,200Ground waterNo current violation flagged
Deforest WaterworksWI113022110,500Ground waterOther current violation flag
Mcfarland WaterworksWI11302419,676Ground waterNo current violation flagged
Cottage Grove WaterworksWI11302189,345Ground waterOther current violation flag
Monona WaterworksWI11302458,624Ground waterNo current violation flagged
Mt Horeb WaterworksWI11302477,756Ground waterOther current violation flag
Windsor Water Utility SouthWI11302674,607Ground waterNo current violation flagged
Cross Plains WaterworksWI11302194,100Ground waterNo current violation flagged
Marshall WaterworksWI11302373,862Ground waterNo current violation flagged
Mendota Mental Health InstWI11302352,787Ground waterOther current violation flag
Deerfield WaterworksWI11302232,510Ground waterNo current violation flagged

02 / SOURCE MIX

Ground water18 systems · 476,622 served
How to read the population total

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.