EPA Removes Cancer Risk Data From Air Pollution Map

The Environmental Protection Agency (EPA) has removed cancer risk estimates from its national air pollution data, a move that obscures the public's understanding of health impacts from airborne pollutants. This data, previously available for over two decades, allowed communities, journalists, and non-profits to assess the specific cancer risks associated with emissions in their neighborhoods. Darya Minovi, a researcher at the Union of Concerned Scientists, utilized this data in 2023 to create maps highlighting that over 14 million people lived within a 5-mile radius of facilities emitting ethylene oxide, a known carcinogen. Her project identified 23 sterilization facilities with ethylene oxide emission levels that definitively contribute to elevated cancer risk, contributing to public awareness and advocacy for stricter emission limits.

The EPA continues to release raw pollution figures, but the crucial component of cancer risk assessment has been omitted from the latest updates. Furthermore, the agency has not updated its searchable U.S. map of cancer risk from air pollution with the most recent available data. This decision shifts the burden of interpreting complex pollution data onto the public, a technically demanding task that requires specialized expertise and familiarity with EPA protocols. Minovi stated that this makes it significantly harder for communities to access and comprehend vital public health information concerning the air they breathe.

The removal of this data has significant implications for public health advocacy and environmental justice. Communities living near industrial facilities often lack the resources and technical knowledge to independently analyze pollution data and understand its health consequences. The EPA's cancer risk estimates provided a critical, albeit simplified, tool for these communities to identify potential dangers and advocate for protective measures. Journalists and non-profit organizations also relied on this information to hold polluters accountable and inform the public about environmental hazards. The absence of this data could lead to a reduction in public awareness and a weakening of efforts to address environmental health disparities.

Ethylene oxide, the specific pollutant highlighted in Minovi's research, is a colorless gas used in medical sterilization processes. Exposure to ethylene oxide has been linked to an increased risk of various cancers, including leukemia and breast cancer. The EPA's previous inclusion of cancer risk estimates allowed for a more direct understanding of the potential health outcomes associated with such emissions. The agency's decision to remove this information raises concerns about transparency and the public's right to know about environmental risks that directly affect their health and well-being. The long-term impact of this data omission on public health initiatives and regulatory oversight remains to be seen, but it represents a significant setback for environmental health transparency.