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

COUNTY WATER-SYSTEM LEDGER

Waukesha, Wisconsin

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

Systems12active CWS · pop. 2,500+
Population served227,917reported total; may overlap
Current violation flag58.3%7 systems
Serious-violator flag8.3%1 systems

01 / SYSTEMS

Water systems serving Waukesha

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

Water systemPopulation servedPrimary sourceCurrent export status
Waukesha Water UtilityWI268023870,718Surface water purchasedOther current violation flag
Brookfield Water UtilityWI268025329,070Ground waterOther current violation flag
New Berlin Water UtilityWI268021727,899Surface water purchasedNo current violation flagged
Menomonee Falls Ww - Surface WaterWI268008223,867Surface water purchasedNo current violation flagged
Oconomowoc WaterworksWI268022715,805Ground waterNo current violation flagged
Sussex Village Hall & Water UtilityWI268023311,750Ground waterOther current violation flag
Hartland WaterworksWI26802059,212Ground waterNo current violation flagged
Pewaukee City Water And Sewer UtilityWI26802148,671Ground waterOther current violation flag
Mukwonago WaterworksWI26802098,190Ground waterOther current violation flag
Pewaukee Village WaterworksWI26802298,166Ground waterCurrent serious-violator flag
Muskego Water UtilityWI26817418,150Ground waterOther current violation flag
Town Of Brookfield San Dist 4WI26802396,419Ground waterNo current violation flagged

02 / SOURCE MIX

Surface water purchased3 systems · 122,484 served
Ground water9 systems · 105,433 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.