Concentrations of Pharmaceutical Contaminants and Their Predicted Effects from a Multi-Regional Assessment of Wadeable USA Streams, 2014-2017

Human-use pharmaceutical compounds were analyzed at the U.S. Geological Survey, National Water Quality Laboratory, Denver, Colorado, in wadeable streams in 4 Regional Stream Quality Assessments: Northeast (NESQA), Southeast (SESQA), Pacific Northwest (PNSQA) and California (CSQA). Multiple (with few exceptions) samplings occurred at each site, during base flow, between 2014 and 2017. Sites were located in the headwaters of perennial, wadeable streams in urban and agricultural watersheds. Site selection and methodology for each assessment can be found in Van Meter and others (2015), Sheibley and others (2015), Van Meter and others (2017), Coles and others (2019), Van Meter and others (2016), Journey and others (2015), and Van Meter and others (2014). VanMetre, P.C., Morace, J.L., and Sheibley, Rich, 2015, The Pacific northwest stream quality assessment: U.S. Geological Survey Fact Sheet 2015 - 3020, 2 p., https://dx.doi.org/10.3133/fs20153020. Sheibley, R.W., Morace, J.L., Journey, C.A., Van Metre, P.C., Bell, A.H., Nakagaki, Naomi, Button, D.T., and Qi, S.L., 2017, Design and methods of the Pacific Northwest Stream Quality Assessment (PNSQA), 2015: U.S. Geological Survey Open-File Report 2017-1103, 46 p., https://doi.org/10.3133/ofr20171103. Coles, J.F., Riva-Murray, K., Van Metre, P.C., Button, D.T., Bell, A.H., Qi, S.L., Journey, C.A., and Sheibley, R.W., 2019, Design and methods of the U.S. Geological Survey Northeast Stream Quality Assessment (NESQA), 2016: U.S. Geological Survey Open-File Report 2018 - 1183, 46 p., https://doi.org/10.3133/ofr20181183. Van Metre, P.C., Riva-Murray, Karen, and Coles, J.F., 2016, The Northeast Stream Quality Assessment: U.S. Geological Survey Fact Sheet 2016 - 3021, 2 p., http://dx.doi.org/10.3133/fs20163021. Journey, C.A., Van Metre, P.C., Bell, A.H., Garrett, J.D., Button, D.T., Nakagaki, N., Qi, S.L., and Bradley, P.M., 2015, Design and methods of the Southeast Stream Quality Assessment (SESQA), 2014: U.S. Geological Survey Open-File Report 2015 - 1095, 46 p., http://dx.doi.org/10.3133/ofr20151095. Van Metre, P.C., and Journey, C.A., 2014, The Southeast Stream Quality Assessment: U.S. Geological Survey Fact Sheet 2014 - 3023, 2 p., https://dx.doi.org/10.3133/fs20143023.