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

COUNTY WATER-SYSTEM LEDGER

Butler, Pennsylvania

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

Systems8active CWS · pop. 2,500+
Population served127,456reported total; may overlap
Current violation flag25.0%2 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
Pa American Water Co ButlerPA510001243,286Surface waterNo current violation flagged
Cranberry Twp WtpPA510009442,000Surface water purchasedNo current violation flagged
Slippery Rock Muni AuthPA510007915,778Ground waterNo current violation flagged
Municipal Water Auth Adams TwpPA51001418,700Surface water purchasedNo current violation flagged
Harmony Boro Water AuthPA51000426,669Surface waterOther current violation flag
Zelienople BoroPA51000934,123Surface water purchasedOther current violation flag
Petroleum Valley RwaPA51001473,800Ground water purchasedNo current violation flagged
Seven Fields Boro Water DeptPA51001353,100Surface water purchasedNo current violation flagged

02 / SOURCE MIX

Surface water purchased4 systems · 57,923 served
Surface water2 systems · 49,955 served
Ground water1 systems · 15,778 served
Ground water purchased1 systems · 3,800 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.