Pennsylvania Groundwater Quality Monitoring Network

Science Center Objects

USGS Pennsylvania Water Science Center, in cooperation with the Pennsylvania Department of Environmental Protection, samples 28 wells biannually to monitor ambient groundwater quality conditions throughout Pennsylvania.

In 2015, the Pennsylvania Water Science Center established a long-term, fixed-station ambient groundwater quality monitoring network at 17 observation wells distributed throughout Pennsylvania. Since then, the network has expanded to 28 wells. Each well is sampled in the spring and fall of every year for major elements, trace metals, nutrients, and organic compounds. First-time wells are sampled for light hydrocarbons, radiological elements, and volatile organic compounds. Project goals include characterizing ambient groundwater quality conditions, monitoring short- and long-term changes in groundwater quality, and generating statistical reports and analyses of sample results.

Thumbnail image of map showing groundwater quality in Pennsylvania

Click on the image to open the Map App.

The most recent results for selected constituents can be accessed through the Map App.

Download data from the National Water Quality Monitoring Council
(Select data to download at the bottom of the NWQMC webpage. Please note data will be downloaded as a .csv file, and the process may take several minutes.). USGS Provisional Data Disclaimer