Toronto grapples with environmental challenges from massive snow mountains resulting from severe winter storms. These snow piles, composed of snow mixed with road salt, antifreeze, oil, and other debris, pose significant environmental risks, particularly to aquatic ecosystems. The city has removed 264,000 tonnes of snow, trucking it to storage facilities, but the high salt content remains a concern. Experts warn that climate change may lead to more intense storms, increasing the reliance on salt, which can have long-lasting impacts.