Microplastic-associated biofilm samples after exposure to four freshwater sources in southen Ontario Metagenomic assembly. Microplastic-associated biofilm samples after exposure to four freshwater sources in southen Ontario

Biofilms that colonize on the surface of microplastics in drinking water source waters may represent a potential health risk. This study examined factors that influence MP-associated biofilm growth, including polymer type, degree of weathering, and source water quality. The biofilm composition was assessed via metagenomic sequencing.