Groundwater Quality Data from the National Water Quality Assessment Project, May 2012 through December 2013: data tables and metadata files
Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the …