Guelph Politicast

The weather has been pretty good reminding us this past week that winter is dangerous, especially when driving on snowy icy streets. That’s why we salt, but the evidence is building that we salt our roads too much and it’s had a profoundly negative impact on our rivers and streams. So are we sacrificing our water quality for winter road safety, and is there a way that we can have both? It was about two years ago that a study was released in the journal Facets that found levels of salt in rivers and streams exceeded federal exposure guidelines in 89 per cent of samples from four different watersheds in the greater Toronto area, and that one-third of the studied sites showed that one-quarter of all species are impacted. The real concerning part though was these sample were taken in the proverbial dog days of summer, late July and August. If salt levels are hitting dangerous levels in summer, what must they look like in the winter with all the winter maintenance? Or what happens in a winter like this, where we g