EPA touts microplastics plan. Critics say it falls short.

By Miranda Willson | 04/03/2026 01:26 PM EDT

The agency has not said if it will require monitoring for plastic particles in drinking water, a key step that would set the stage for possible rules.

EPA Administrator Lee Zeldin speaks during a June 11 event at EPA headquarters.

EPA Administrator Lee Zeldin, shown here during a June 11, 2025, event at EPA headquarters, announced plans to add microplastics and pharmaceuticals, among other substances, to a new draft list of contaminants in drinking water. Francis Chung/POLITICO

The Trump administration touted an announcement on microplastics as a “major step” toward safeguarding drinking water, but the plan sidesteps questions about whether EPA will require widespread monitoring.

The agency is keeping mum on whether it will include microplastics in a pending monitoring rule for water contaminants, a procedural — but critical — move that would lay the groundwork for possible regulations.

At a splashy event with Health Secretary Robert F. Kennedy Jr., EPA Administrator Lee Zeldin on Thursday unveiled a new draft list of contaminants that are likely to show up in drinking water, putting microplastics and pharmaceuticals on the list for the first time. While the move identifies pollutants on EPA’s radar for future regulations, the vast majority of contaminants never make it that far.

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Environmentalists and some water experts said it remains to be seen whether the agency has the resources or will to take another step: tracking the substances to determine how ubiquitous they are in tap water.

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