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Environment & Energy Report

California Microplastics Definition Sets Stage for Investigation

June 16, 2020, 10:18 PM

California’s top water regulator on Tuesday approved a definition of microplastics in drinking water, setting the stage for the state to investigate the extent of contamination from the tiny plastics that have been found in fish, waterways, and other habitats.

The State Water Resources Control Board unanimously approved the definition, which includes plastic particles with three dimensions that are less than 5 millimeters in length. The action makes California the first government in the world to define microplastics in a drinking water regulation, according to the water board.

Microplastics have been detected in air, food, and water. The science...

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