Groundwater Quality in Relation to Drinking Water Health Standards and Geochemical Characteristics for 54 Domestic Wells in Clinton County, Pennsylvania, 2017 [open pdf - 6MB]
From the Abstract: "Despite the reliance on groundwater by approximately 2.4 million rural Pennsylvania residents, publicly available data to characterize the quality of private well water are limited. As part of a regional effort to characterize groundwater in rural areas of Pennsylvania, samples from 54 domestic wells in Clinton County were collected and analyzed in 2017. The samples were evaluated for a wide range of constituents and compared to drinking-water health standards and geochemical characteristics."
Scientific Investigations Report 2020-5022
US Geological Survey: https://usgs.gov/