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Plastic Microbead Accumulation in our Freshwaters: North American Great Lakes Assessments and Perspectives
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Researchers reviewed plastic microbead contamination in North American freshwater systems including the Great Lakes, finding that despite Canada's 2018 ban on microbeads in personal care products, these particles persist due to their resistance to degradation and continued release from unregulated industrial sources.
Plastic microbeads, widely incorporated into personal care and cleansing products, have emerged as a pervasive contaminant in freshwater systems, including in North America. Historical estimates indicate that North American consumers alone contributed trillions of microbeads daily to municipal wastewater, with global usage reaching quadrillions per day. Despite regulatory actions such as Canada’s 2018 ban on microbeads in personal care products, these particles persist in the environment due to their resistance to degradation and continued release from unregulated sources, including industrial abrasives and certain cleaning agents. Studies across the Great Lakes, one of the world’s largest freshwater systems, have documented widespread microbead contamination in surface waters, sediments, and shorelines, highlighting their persistence and accumulation. This review synthesizes findings from key studies conducted between 2013 and 2017 to establish a pre-ban baseline of microbead distribution in the Great Lakes, and presents new data collected from 2018 to 2021 as a post-ban contamination assessment. The review emphasizes the unique challenges posed by microbeads within the broader context of microplastic pollution and underscores the critical role of polymer chemists and engineers in developing innovative materials and removal strategies to mitigate future contamination.
More Papers Like This
Plastic Microbead Accumulation in our Freshwaters:North American Great Lakes Assessments and Perspective
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This paper reviews microplastic sampling studies across the North American Great Lakes, one of the world's largest freshwater systems. High concentrations of plastic microbeads and fibers were found even in remote nature reserves, far from major urban centers. The authors call for stricter product regulations and improved wastewater treatment to reduce microplastic input to these vital water bodies.
Plastic Microbead Accumulation in Our Freshwaters: North American Great Lakes Assessments and Perspectives
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This review synthesizes Great Lakes microbead research from before and after North American regulatory bans in 2017, finding that the bans substantially reduced microbead contamination — with one measure showing an 86% reduction in polyethylene microbead discharge from treatment plants. However, microbeads persist in lake sediments and continue entering from unregulated industrial sources. This shows that targeted regulations can work, but monitoring must continue to confirm long-term environmental recovery and close remaining loopholes.
Microplastic pollution in the surface waters of the Laurentian Great Lakes
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Researchers documented microplastic pollution across the surface waters of the Laurentian Great Lakes, finding contamination in all lakes sampled — particularly Lake Erie — with fibers as the dominant particle type, highlighting plastic pollution in a critical freshwater system.
Occurrence, Sources, Transport, and Fate of Microplastics in the Great Lakes–St. Lawrence River Basin
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Researchers documented that microplastics smaller than five millimeters are present throughout the Great Lakes and St. Lawrence River system, from tributary streams to the Atlantic Ocean. This finding suggests that the Great Lakes region is both a major accumulation zone and a transport pathway for microplastic pollution into the broader marine environment.
A survey on the effect of plastic pollution in the Great Lakes
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This review surveys plastic pollution in the Great Lakes of North America, examining the distribution of micro-, meso-, and macroplastics across these ecologically and economically important freshwater systems. The Great Lakes contain significant quantities of microplastics from surrounding urban and industrial areas, threatening freshwater biodiversity and drinking water quality.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.