County · Pennsylvania
Butler County, Pennsylvania: drinking water records
This overview covers 31 ZIP codes and 32 community water systems in Butler County. It also stands in for 7 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Cranberry TWP WTP PA5100094 | 42,000 | 120 | 0 | 1 | 0.5 ppb |
| Municipal Water Auth Adams TWP PA5100141 | 8,700 | 120 | 0 | 1 | 0.6 ppb |
| Harmony Boro Water Auth PA5100042 | 6,669 | 120 | 1 | 8 | 2.2 ppb |
| Zelienople Boro PA5100093 | 4,123 | 120 | 5 | 1 | 6.0 ppb |
| Pa American Water Co Butler PA5100012 | 43,286 | 120 | 0 | 0 | 2 ppb |
| Slippery Rock Muni Auth PA5100079 | 15,778 | 120 | 0 | 0 | 0.6 ppb |
| Concordia Lutheran Home PA5100025 | 950 | 0 | 0 | 1 | 74 ppb |
| Lake Arthur Estates PA5100054 | 460 | 0 | 0 | 1 | 1 ppb |
| Cranberry Village MHP PA5100050 | 400 | 0 | 0 | 1 | 46.3 ppb |
| Marion TWP WTP PA5100099 | 225 | 0 | 0 | 2 | 28 ppb |
| Chicora Medical Center PA5100127 | 150 | 0 | 0 | 1 | 128 ppb |
| Coylesville Court PA5100036 | 76 | 0 | 0 | 8 | 1 ppb |
| Perry Lake Estates PA5100043 | 44 | 0 | 0 | 2 | 2 ppb |
| Maple Manor MHP PA5100071 | 37 | 60 | 0 | 0 | 17 ppb |
| Petroleum Valley Rwa PA5100147 | 3,800 | 0 | 0 | 0 | 0 ppb |
| Seven Fields Boro Water Dept PA5100135 | 3,100 | 0 | 0 | 0 | 5 ppb |
| Evans City Borough PA5100033 | 1,990 | 0 | 0 | 0 | 17 ppb |
| Mars Borough Water Works PA5100049 | 1,956 | 0 | 0 | 0 | 3 ppb |
| Chicora Boro Water Supply PA5100029 | 1,100 | 0 | 0 | 0 | 3.9 ppb |
| Autumn Grove Care Center PA5100045 | 240 | 0 | 0 | 0 | 1.1 ppb |
| Fair Winds PA5100063 | 182 | 0 | 0 | 0 | 3.3 ppb |
| Stoneworth Apts WTP PA5100145 | 150 | 0 | 0 | 1 | not reported |
| Dover Realty Ventures MHP LLC ME0001978 | 145 | 0 | 0 | 0 | 0 ppb |
| Beacon Lite Mobile Estates PA5100017 | 100 | 0 | 0 | 0 | 25.0 ppb |
| E J Gulick MHP PA5100062 | 78 | 0 | 0 | 0 | 3.5 ppb |
ZIP reports in Butler County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 16022, 16030, 16035, 16040, 16041, 16048, 16052.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.