Edmonton considers returning to calcium chloride for snow removal

The City of Edmonton is evaluating the reintroduction of calcium chloride for snow and ice control following a recent report on winter management. The chemical, which has a lower freezing point than standard salt, was used in a pilot program during 2017 and 2018 but was discontinued in 2020 due to concerns regarding environmental impacts and damage to vehicles, concrete, and infrastructure.

City officials are responding to motions from councillors to investigate the pros and cons of the substance. Proponents suggest the chemical could help mitigate dangerous conditions caused by increasingly erratic winter weather patterns. However, critics and local auto experts have noted that the chemical can lead to vehicle rust and corrosion.

Upgrading the city's system to support increased use of calcium chloride could require an upfront cost of approximately $4.4 million, with an additional $2.5 million in annual expenses. The city council is expected to debate these proposed changes during budget deliberations in November.