Mercury levels rising in the sediment of some lakes
Grassy Narrows: A newly released government commissioned report has found that mercury levels in the sediment of Grassy Narrows’ Wabigoon River remain up to 20 times above natural levels, while fish are up to 15 times above consumption guideline levels. This places the river above the frequent adverse effects level – the highest risk threshold used by Environment Canada to trigger remediation in the St. Lawrence environmental risk assessment. The Wabigoon River is the site of one of Canada’s most infamous ongoing environmental health disasters which began when 9,000 kg of mercury were dumped by a paper mill upstream in the 1960’s. No clean-up has been done even though multiple generations of Grassy Narrows families have been poisoned by the mercury.
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