Dissolved-Solids Sources, Loads, Yields, and Concentrations in Streams of the Conterminous United States
http://pubs.usgs.gov/sir/2014/5012/pdf/sir2014-5012.pdf
Warns about concentrations of dissolved solids, a measure of the salt content in water, which are elevated in many of U.S. streams because of human activity. From the U.S. Geological Survey
