Overview
Microplastics encompass an array of plastic-derived materials with differing shapes, sizes, chemical compositions, densities and colors. Despite a lack of uniform scientific definition, they are often described as plastic particles smaller than 5mm in length.1 This is subjective due to inter-changeable upper and lower limits of analytical detection depending upon several factors. The World Health Organization (WHO) released a report on microplastics in drinking water.2 They concluded that limited data is available, and more investigational work is required to determine the complete impact that microplastics and nanoplastics elicit upon human health from other sources, as opposed to drinking water alone. More recently, California is aiming to produce the world’s first guidelines on microplastics in drinking water, under the provision that the U.S State’s Water Control Board can issue a health-based threshold and standard testing methods by July 1st.3
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