County · Pennsylvania
Armstrong County, Pennsylvania: drinking water records
This overview covers 27 ZIP codes and 24 community water systems in Armstrong County. It also stands in for 4 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 |
|---|---|---|---|---|---|
| Buffalo TWP Mun Auth Freeport PA5030019 | 5,849 | 120 | 0 | 4 | 2.7 ppb |
| E Armstrong Cnty Muni Auth PA5030004 | 1,875 | 60 | 0 | 1 | 5 ppb |
| Kittanning Suburb Jt Water Aut PA5030043 | 8,000 | 120 | 0 | 0 | 0.7 ppb |
| Manor TWP Jt Muni Auth PA5030006 | 6,744 | 60 | 0 | 0 | 0.5 ppb |
| Pa American Water Kittanning PA5030008 | 4,499 | 120 | 0 | 0 | 3 ppb |
| Ford City Muni Water Works PA5030005 | 2,991 | 0 | 0 | 1 | 0 ppb |
| South Buffalo TWP Muni Auth PA5030049 | 1,230 | 0 | 0 | 12 | 1 ppb |
| Rural Valley Water Works PA5030012 | 1,000 | 0 | 0 | 1 | 1 ppb |
| Mahoning TWP Muni Auth PA5030024 | 900 | 0 | 0 | 6 | 8.3 ppb |
| Parker Area Water Auth PA5030011 | 900 | 0 | 0 | 32 | 1 ppb |
| Sugar Creek Resthome PA5030034 | 323 | 0 | 0 | 1 | 33.5 ppb |
| Cowanshannock M a Sagamore Sys PA5030022 | 300 | 0 | 0 | 2 | 3.7 ppb |
| Cowanshannock Ma-Margaret Sys PA5030021 | 95 | 0 | 0 | 1 | 1.4 ppb |
| Parks TWP Muni Auth PA5030025 | 2,049 | 0 | 0 | 0 | 8.7 ppb |
| West Kittanning Muni Auth PA5030045 | 2,000 | 0 | 0 | 0 | 13 ppb |
| Gilpin TWP Muni Auth PA5030010 | 1,680 | 0 | 0 | 0 | 30 ppb |
| Worthington West Franklin Jma PA5030027 | 1,500 | 0 | 0 | 0 | 3.3 ppb |
| Cowanshan Yatesboro Numine Sys PA5030047 | 1,200 | 0 | 0 | 0 | 20 ppb |
| Dayton Muni Water Dept PA5030002 | 600 | 0 | 0 | 0 | 3 ppb |
| Templeton Water Co PA5030016 | 451 | 0 | 0 | 0 | 2 ppb |
| Crosswinds MHP, LLC DE0001254 | 210 | 0 | 0 | 0 | 0 ppb |
| Souths Mobile Home Park NJ0326007 | 110 | 0 | 0 | 0 | 1.4 ppb |
| Kittanning Plumcreek Watr Auth PA5030013 | 600 | 0 | 0 | 0 | not reported |
| Rayburn TWP Joint Muni Auth PA5030020 | 460 | 0 | 0 | 0 | not reported |
ZIP reports in Armstrong 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: 16222, 16245, 16259, 16262.
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.