EPA takes steps to regulate microplastics in drinking water

The Environmental Protection Agency has added microplastics to its priority list of pollutants, marking a significant step toward federal regulation of the microscopic plastic particles found in drinking water. Microplastics—fragments smaller than 5 millimeters shed from plastics, synthetic textiles, and tire wear—have been detected in water supplies across the country and pose potential health risks to consumers. By prioritizing microplastics, the EPA is signaling its intent to establish enforceable drinking water standards, though the agency will need to determine safe exposure limits before issuing formal regulations. Dr. Celine Gounder notes that the timeline for enforcement will depend on the EPA's scientific review and rule-making process, which typically takes years. This regulatory move reflects growing concern about microplastics' prevalence in the environment and their potential effects on human health.