EPA Adds Microplastics to Drinking Water Study List

For the first time ever, the Environmental Protection Agency is officially studying microplastics and pharmaceuticals as potential threats in our drinking water.

EPA Administrator Lee Zeldin announced Thursday that both contaminants will appear on the agency's draft Contaminant Candidate List, responding to growing concerns from families across America. The move opens a 60-day public comment period before the list becomes final in November.

"I can't think of an issue that hits closer to home for American families than the safety of their drinking water," Zeldin said at EPA headquarters. Health Secretary Robert F. Kennedy Jr. joined the announcement, unveiling a $144 million program called STOMP to detect, measure and eventually remove microplastics from human bodies.

Recent studies have found microplastics in people's hearts, brains and testicles, though scientists are still working to understand the full health impacts. Similar concerns exist about pharmaceutical drugs that enter water supplies through human excretion and aren't fully removed by conventional treatment plants.

The list identifies substances not currently regulated under the Safe Drinking Water Act. While making the list doesn't guarantee future regulation, it prioritizes research funding and signals government attention to emerging threats.

The Ripple Effect

Beyond the immediate health implications, this announcement represents something bigger: government agencies responding to public pressure about environmental contaminants. Judith Enck, former EPA regional administrator who now heads Beyond Plastics, called it "a good first step" toward eventually regulating microplastics in public water supplies.

The American Chemistry Council supports the move, as long as monitoring remains standardized nationwide. Even Dr. Philip Landrigan from Boston College's Global Observatory on Planetary Health, who says real progress requires limiting plastic production itself, acknowledged the EPA is "moving in the right direction."

Kennedy's STOMP program aims to build detection tools, map how microplastics move through bodies, and ultimately develop removal methods. "We can't treat what we cannot measure, we cannot regulate what we don't understand," he explained.

The process ahead is long, and historically the EPA has rarely moved contaminants from this list to actual regulation. But for families worried about what's coming through their taps, seeing microplastics officially acknowledged as a priority marks meaningful progress.