Ninety per cent of the lakes surveyed in a new study of Ontario’s “cottage country” north of Toronto have seen a significant rise in taste and odour-causing algae – most dramatically in the past 20 years, the researchers report.
Photo credit: Ontario Ministry of the Environment (MOE).
One of the most frequent complaints voiced by cottagers to local officials is that water in their lakes periodically tastes or smells bad.
A common cause of such problems is blooms of small algae (microscopic plants) that thrive in some of these lakes. Although the frequency of taste and odour complaints seems to be growing steadily, it is unclear whether the problems themselves are increasing or if local users are more sensitized to these issues.
Nancy Dorrance | Queen´s University
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