USGS Finds 100% Mercury Contamination in US Streams
Mercury contamination is widespread. Mercury was detected in all fish sampled from 291 streams across the U.S. Concentrations about 27% of the fish sampled exceeded the criterion for the protection of humans who consume average amounts of fish, established by the U.S. Environmental Protection Agency (0.3 parts per million, wet weight).
2009 USGS Hg in Fish- Full Report.pdf
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