WATCH: EPA to study microplastics in drinking water

The EPA has proposed adding microplastics and pharmaceuticals to its official contaminant list for drinking water—a first-time inclusion that could eventually require water utilities to monitor and limit these substances. The move represents a significant shift in federal regulation, as microplastics (tiny plastic fragments) and pharmaceutical residues have become increasingly detected in water supplies across the country but have never faced federal drinking-water standards. If finalized, the proposal would trigger mandatory testing by utilities and potentially force infrastructure changes to remove these contaminants, affecting millions of Americans and billions in compliance costs. The designation signals growing concern about long-term health effects from chronic exposure to microplastics and residual medications in tap water. The proposal is expected to undergo public comment and scientific review before any final limits are established.