Study: Pesticides a concern for aquatic life in most US urban streams
The proportion of urban streams in the United States with potentially worrisome levels of pesticides for aquatic life has surged to 90 percent, a two-decade government study said. Some of the more than 500 million pounds of pesticides used yearly in the United States are concentrated at levels that pose a concern for fish and water-dwelling insects, the U.S. Geological Survey report on pesticides from 1992 to 2011 said. The levels seldom topped human health standards.
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