Research on PFAS in the Great Lakes reveals consistent concentrations from precipitation across all lakes, with variable removal rates influencing their persistence. These findings come amid regulatory changes by the EPA classifying certain PFAS as hazardous substances, highlighting the importance of the Great Lakes as a freshwater source and underscoring the need for continued monitoring and regulation to mitigate pollution.
Perfluoroalkyl and polyfluoroalkyl substances , commonly referred to as “forever chemicals,” are enduring environmental contaminants found in air, water, and soil. Their chemical stability allows them to circulate through the water cycle, infiltrating sources of drinking water and precipitation. Research reported in theindicates that precipitation deposits roughly equal quantities of PFAS into each of the Great Lakes; however, the lakes eliminate the chemicals at different rates.
In precipitation samples, PFAS concentrations largely remained the same across sites, suggesting that the compounds are present at similar levels regardless of population density. In the lake water samples, the highest concentration of PFAS were in Lake Ontario, followed by Lake Michigan, Lake Erie, Lake Huron, and Lake Superior.
Source: Tech Daily Report (techdailyreport.net)
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