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

COUNTY WATER-SYSTEM LEDGER

Butler, Ohio

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

Systems9active CWS · pop. 2,500+
Population served373,823reported total; may overlap
Current violation flag44.4%4 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Butler

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

Water systemPopulation servedPrimary sourceCurrent export status
Butler Co. Water District 2 PWSOH0900303116,572Surface water purchasedNo current violation flagged
Hamilton Public Water SystemOH090401262,447Ground waterOther current violation flag
Middletown City PWSOH090171251,229Ground waterOther current violation flag
Fairfield City PWSOH090071544,907Ground waterNo current violation flagged
Southwest Regional Water DistrictOH090391242,856Ground waterNo current violation flagged
Oxford City PWSOH090231224,000Ground waterNo current violation flagged
Monroe City PWSOH090201215,600Surface water purchasedOther current violation flag
Trenton City PWSOH090301213,012Ground waterOther current violation flag
New Miami Village PWSOH09021123,200Ground waterNo current violation flagged

02 / SOURCE MIX

Ground water7 systems · 241,651 served
Surface water purchased2 systems · 132,172 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.