Environmental and Quality-Control Data Collected by the USGS National Water-Quality Assessment Project for Hormones and Pharmaceuticals in Groundwater Used as a Source of Drinking Water Across the United States, 2013-15

This data set includes results for hormone and pharmaceutical compounds analyzed in environmental and quality-control samples collected by the USGS National Water-Quality Assessment Project during 2013 through 2015 for a study of groundwater resources used for drinking-water supply across the United States. Hormone and pharmaceutical results are provided for environmental samples collected at 1,120 wells or springs; selected ancillary data, such as principal aquifer, well depth, and land-use information also are provided for the sampled sites. The types of quality-control samples included in this data set are blanks, matrix spikes, and replicates collected at field sites or field offices. Included in this data release are the following data tables: Table 1. Site information and ancillary data (including principal aquifer, rock type, well depth, groundwater age information, aridity information, and land-use information) for groundwater sites sampled for hormones and pharmaceuticals by NAWQA, 2013-15. Table 2. Hormone and pharmaceutical results for groundwater samples collected by the National Water-Quality Assessment Project, 2013-15. Table 3. Hormone and pharmaceutical results for field related blank samples of known blank type collected by the National Water-Quality Assessment Project for groundwater, 2013-15. Table 4. Hormone and pharmaceutical results for laboratory matrix spikes and associated environmental samples collected by the National Water-Quality Assessment Project for groundwater, 2013-15. Table 5. Hormone and pharmaceutical results for replicate samples and associated environmental samples collected by the National Water-Quality Assessment Project for groundwater, 2013-15.