The 'eco-friendly' alternatives to road salt can actually be over 1,000 times more damaging to nature than the regular stuff.
Organic-derived deicers are marketed as 'eco-friendly' because they reduce chloride in water, but they actually cause toxic heavy metals like aluminum to leak out of the soil. The monetized damage to human health and nature from these 'green' alternatives far exceeds the costs of just using regular salt.
The Alternative Deicer Paradox: Metal Mobilization Ecotoxicity from Various Road Deicers Exceeds That of Conventional Sodium Chloride
SSRN · 6460231
AbstractRoad salt alternatives marketed as environmentally preferable to conventional sodium chloride (NaCl) are increasingly adopted to reduce chloride loading to freshwater ecosystems. Yet these products are rarely evaluated for metal-mobilization toxicity, an impact pathway absent from chloride-focused assessment frameworks. We monetized USEtox 2.14 life-cycle impact assessment outputs for nine deicer formulations across five brine concentrations (1–20% w/w) using shadow pricing for human hea