TY - RPRT TI - Characterization of ambient groundwater quality within a statewide, fixed-station monitoring network in Pennsylvania, 2015–19 AU - Matthew D. Conlon AU - Joseph W. Duris PY - 2022 DO - 10.3133/sir20215119 UR - https://pubs.usgs.gov/publication/sir20215119 ID - sir20215119 ER -