Are there microplastics in tap water from plastic pipes?

What's actually in it

Tap water travels through a distribution system that may include plastic pipes. PVC, HDPE, and other plastic pipe materials can shed microscopic particles into the water flowing through them. By the time water comes out of your tap, it may contain plastic particles from multiple sources along the way.

Microplastics in drinking water are a recent concern. We don't yet know the full health effects, but we do know particles are getting into the body.

What the research says

Researchers in a 2026 study in J Xenobiot tracked plastic particles from groundwater through the treatment process all the way to the tap. They found microplastic particles at every stage of the distribution system, including in treated tap water ready for consumption. Plastic particles from the distribution system itself contributed to the final tap water count.

Treatment removes some particles but not all. The smaller the particle, the harder it is to filter out.

A good water filter (reverse osmosis or solid carbon block) removes most microplastics before they reach your glass. Store filtered water in glass food storage rather than plastic bottles to avoid adding more plastic particles back in.