USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions in a variety of settings throughout Pennsylvania. The most recent results for selected constituents can be accessed through the Pennsylvania Groundwater Quality Monitoring Network Data Exploration Tool.
The application allows users to explore data from several commonly detected constituents at each of the 28 wells in the Pennsylvania Groundwater Quality Monitoring Network. The selection of a well on the map will generate a plot that displays all measurements of the selected constituent over time at that well. Additional information presented in the application include a table showing the number of samples collected and number of constituent detections at the selected well and a comparison of the median concentration measured at the selected well to the median concentration across the network.
All analytical data collected for this project has been collected and published as a USGS Data Release titled Collection of Analytical Data for the Pennsylvania Groundwater Monitoring Network. This Data Release will be updated annually with the most recently collected data.