US Agencies to Monitor Drinking Water for Microplastics, Pharmaceuticals

EPA and HHS announce new initiative to assess health risks of emerging contaminants

Apr. 2, 2026 at 10:04pm

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A highly detailed, translucent X-ray photograph showing the molecular structure of a water droplet, with faint outlines of microplastic particles and pharmaceutical compounds suspended within, conceptually illustrating the hidden contaminants in drinking water.An X-ray view into the unseen microscopic world of drinking water reveals the presence of emerging contaminants like microplastics and pharmaceuticals.Washington Today

The U.S. Environmental Protection Agency and Department of Health and Human Services have announced they will begin monitoring drinking water for the presence of microplastics and pharmaceuticals, marking the first step toward assessing potential health risks and shaping future regulations.

Why it matters

Microplastics and pharmaceuticals have been detected in water systems around the world, raising concerns about their potential impacts on human health and the environment. This new monitoring effort represents a significant shift in federal policy, as the agencies aim to get ahead of these emerging contaminants.

The details

The EPA will now include microplastics and pharmaceuticals on the Contaminant Candidate List, which will trigger funding for research and potential future regulation under the Safe Drinking Water Act. The announcement was praised by EPA Administrator Lee Zeldin and Health Secretary Robert F. Kennedy, Jr. as part of the Trump administration's 'Make America Healthy Again' agenda, though the move has also drawn some criticism from environmental groups for not going far enough.

  • The joint announcement was made on April 2, 2026.
  • The Contaminant Candidate List is updated every five years.

The players

Lee Zeldin

The current Administrator of the U.S. Environmental Protection Agency.

Robert F. Kennedy, Jr.

The current Secretary of the U.S. Department of Health and Human Services, and a former 2024 Democratic presidential candidate who later endorsed the Republican candidate, President Donald Trump.

Donald Trump

The President of the United States, whose 'Make America Healthy Again' agenda has included reducing recommended childhood vaccines and promoting whole foods in new dietary guidelines.

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What they’re saying

“By placing microplastics and pharmaceuticals on the Contaminant Candidate List for the first time ever, EPA is sending a clear message: we will follow the science, we will pursue answers, and we will hold ourselves to the highest standards to protect the health of every American family.”

— Lee Zeldin, EPA Administrator

What’s next

The EPA will now begin testing and monitoring microplastics and pharmaceuticals in drinking water under the Safe Drinking Water Act, which could lead to future regulation if they are determined to threaten public water systems.

The takeaway

This new federal initiative to monitor microplastics and pharmaceuticals in drinking water represents an important step in addressing emerging contaminants that have raised growing health concerns. However, some environmental groups have criticized the administration's approach as not going far enough to address these issues.