U.S. Waterways Are Getting Saltier, With Possible Effects on Drinking Water

Science: U.S. rivers are getting saltier, potentially compromising drinking water: “The bomb cyclone that hit the northeastern United States last week left roadways and vehicles caked in a white film of road salt and grime. Those salts might be washing into the region’s fresh waterways, a new study reveals. A 50-year-long analysis of hundreds of U.S. Geological Survey monitoring sites finds salts in freshwater rivers and streams are rising across much of the nation. That could mean compromised drinking water akin to the crisis that struck Flint, Michigan, in 2014 when the city switched its water source to the highly salted Flint River. But road salts and deicers, mostly made of the same stuff as table salt, are not the only culprits. Researchers discovered additional salt ions—potassium, magnesium, and calcium, among others—are also increasing in the country’s freshwater rivers. Water pH increased at 66% of sites, meaning many waterways are…

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