The Don, a 38km river running from the Oak Ridges Moraine to Lake Ontario, is Ontario’s dirtiest and one of the worst in Canada. Environment Canada gave the Don a water quality score of 34.8 out of 100.
The Don, a 38km river running from the Oak Ridges Moraine to Lake Ontario, is Ontario’s dirtiest and one of the worst in Canada. Environment Canada gave the Don a water quality score of 34.8 out of 100.