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Road Salt Can Be Toxic To Fish and Wildlife
Road salt helps keep streets, sidewalks and parking lots clear during snow and ice storms. It’s cheap and doesn’t require a lot of manual labor. But it’s also toxic to the freshwater creatures living in local streams, where the salty runoff from roads ends up after a snowfall. Road salt is also bad for humans: after it washes into the watershed, salt salt from roadways ends up in our drinking water. Along the way, it corrodes infrastructure, from bridges to water pipes.

According to the Environmental Protection Agency, chloride can be toxic to aquatic life if it is present for long periods at levels above 230 parts per million. A short exposure to chloride at 860 parts per million can also be lethal.

While volunteering at a trash cleanup in Gaithersburg, Maryland, one resident found a number of dead fish.  After retrieving chloride testing strips, he found the salt level was off the charts — above 600 parts per million, the maximum level the testing strips can detect.  While it isn't clear if the salt killed the fish, but circumstantially, salt appears to be the culprit.

 
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Over 50 Invasive Carp Captured on Mississippi River - The Minnesota Department of Natural Resources is conducting an immediate response to the capture of 51 invasive carp on the Mississippi River. The invasive carp were caught by two commercial fishing operators near La Crosse and Trempealeau, Wisconsin, during routine spring netting in March.


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