current thresholds

Road Salt Pollution Levels Deemed Safe in U.S. and Canada May Not Protect Freshwater Ecosystems Enough

Road Salt Pollution Levels Deemed Safe in U.S. and Canada May Not Protect Freshwater Ecosystems Enough

Using salt to clear icy roads may be an effective winter safety measure, but excess salty meltwater can wreak havoc on freshwater ecosystems and drinking water resources. In a new study, researchers show current water quality guidelines in North America and Europe are not enough to prevent dangerous levels of salinization. The findings were published last month in the Proceedings of the National Academy of Sciences.