Plastic is becoming increasingly more abundant in the environment, causing public concern for potential harm towards humans.
Microplastics were found in drinking water samples around the world in 2017, which prompted the California Legislature to investigate the issue further. In 2018, California passed Senate Bill 1422 which requires the State Water Resources Control Board to adopt a definition of microplastics in drinking water, develop a standard methodology to measure microplastics in drinking water, monitor for microplastics in drinking water for four years and publicly disclose results, and consider a health-based guidance level to aid consumer interpretations of the results of the testing, as well as accredit laboratories to analyze microplastics.
California regulators are working closely and collaboratively with academic researchers, laboratories, and industry to advance the science and complete these objectives.
This presentation will provide an overview of the world’s first regulatory investigation of microplastics in drinking water, including the definition of microplastics, known human health effects, method standardization efforts, and upcoming plans and actions regarding microplastics in drinking water.