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Cary Institute on Sustainable Road Salt Usage

Updated: Aug 8, 2021

Each year in the US, millions of tons of road salt are applied to roads to manage snow and ice and maintain safe driving conditions. This salt-dependence comes at a high cost to state and town budgets, drinking water supplies, and the quality of freshwaters.

Road salt overuse has been linked to the salinization of drinking water wells, reservoirs, streams, and lakes. Sensitive wildlife and people on reduced sodium diets are among those at risk.

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