Microplastics in Tap Water: Should You Be Worried?
What we know about microplastic contamination in drinking water.
They are everywhere
Studies have found microplastics in 83% of tap water samples worldwide and 94% of US tap water samples (Orb Media, 2017). Bottled water contains even more microplastics on average. Sources include plastic pipes, packaging, textile fibers (from laundry), and environmental contamination.
Health implications
The health effects of microplastic ingestion are still being studied. The WHO concluded in 2019 that microplastics in drinking water do not appear to pose a health risk at current levels, but acknowledged significant data gaps. Emerging research suggests potential concerns with nanoplastics that can cross biological barriers.
Reduction options
Reverse osmosis removes microplastics effectively (membrane pore size is much smaller than microplastic particles). Carbon block filters also reduce microplastics. Standard granular carbon and most pitcher filters are less effective. There are currently no EPA regulations for microplastics in drinking water.