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Road Salt

Black and white photograph of a car near an icy road

Salting for Safety is Taking a Toll

800 533 Stroud Water Research Center

In some areas, salt is necessary for safe winter driving and walking. But we have to decide how much is too much and what price we are paying for it.

Video still from Episode 5 of the WHYY "Stories From the Streams" video series

Stories From the Streams: Salty Streams

838 473 Stroud Water Research Center

How salty is too salty? Road salt keeps travelers safe in winter but can pose a serious threat to nearby streams. Episode 5 in the “Stories from the Streams” series from WHYY TV12.

Stroud Science on NPR: Road Salt Boosts Safety But Threatens Fresh Water

800 600 Stroud Water Research Center

When StateImpact Pennsylvania wanted to understand how our addiction to road salt is impacting the environment, they came to Stroud Water Research Center.

Graphs showing conductivity trends in streams in winter and summer

EnviroDIY Sensors Track Road Salt Levels in Streams

980 576 Stroud Water Research Center

During thaws and rain events, road salt is carried into streams where it can have chronic and sometimes acute effects on biological communities.

Salty Roads, Salty Rivers

400 300 Stroud Water Research Center

Salt helps keep winter roads safe. But when snow melts, the salt runs off pavement and can end up in waterways.

Freshwater Sources Less “Fresh” from Greater Salt Use, Scientists Say

1024 614 Stroud Water Research Center

Fresh groundwater, where some drinking water comes from, recharges streams. Scientists are concerned about early signs that groundwater sources are getting saltier.