Anti-Abortion Group Claimed Mifepristone in Wastewater. They Never Tested for It.
Quick Breakdown · Reproductive Health
Students for Life spent two years sampling wastewater in Austin, Blacksburg, and Carbondale. They published a paper claiming “significant levels” of mifepristone in all three cities’ water systems. The claim spread quickly. One problem: they never tested for mifepristone.
The method they used does not detect mifepristone specifically. It detects any compound that blocks progesterone receptors. Sunscreen does that. So do common insecticides and certain flame retardants. The test cannot distinguish between a pharmaceutical and a garden pesticide.
The paper was published in a journal run by an anti-abortion organization that previously sued the FDA over mifepristone access. The authors are not water scientists. And the research is now being cited in state legislatures and Congress.
To consume the equivalent of a single clinical dose of mifepristone through tap water, a person would need to drink roughly five million liters — the volume of two Olympic swimming pools.
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To consume the equivalent of a single clinical dose of mifepristone through tap water, a person would need to drink roughly five million liters — the volume of two Olympic swimming pools. That figure comes from independent analysis of the concentrations the study claimed to find. There is no plausible public health mechanism here.
The campaign is explicitly political. It launched in response to Biden-era rules allowing abortion pills to be prescribed via telehealth and shipped by mail. In 2025, lawmakers in seven states introduced nine bills tying medication abortion to water contamination statutes. Twenty-five members of Congress asked the EPA to begin monitoring for mifepristone. Those requests now have a published “study” to point to, regardless of what that study actually measured.
Source: E&E News · Jessica Valenti