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News Release 18-002

Winter road salt, fertilizers turning North American waterways increasingly saltier

New findings show need for better regulation of road salt, fertilizers and other salty compounds

Uncovered salt piles

Uncovered salt piles near the NSF Baltimore Long-Term Ecological Research site.

Credit: Sujay Kaushal


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map showing increased salinity

Warm colors show increasing salinity; cool colors, decreasing salinity. Black dots are study sites.

Credit: Ryan Utz/Chatham University


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Road salt kept in a storage facility in Washington, D.C.

Road salt kept in a storage facility in Washington, D.C.

Credit: Sujay Kaushal


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Road salt in the D.C. area

Road salt in the D.C. area; the salt can be transported to drinking water sources by urban runoff.

Credit: Joseph Galella/University of Maryland


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Corrosion of metals caused by road salt

Corrosion of metals in an urban storm drain, caused by road salt.

Credit: Sujay Kaushal


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New York's Hudson River

Researchers at the Cary Institute sample New York's Hudson River for salt-related changes.

Credit: Heather Malcolm/Cary Institute


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