Doctor says Great Salt Lake dust is a 'toxic soup,' warns of serious health impacts

Dr. Brian Mensch, president of Utah Physicians for a Healthy Environment, told a Hinckley Institute forum on April 2 that lakebed dust from the Great Salt Lake contains a range of toxic substances and poses an underappreciated public‑health threat. "It's a toxic soup," he said, citing arsenic, heavy metals, industrial chemicals, radionuclides and pesticide residues in the lakebed.

Mensch said his organization compiled a roughly 100‑page literature review with more than 500 references to synthesize what is known about the lake and its sediments. "The health hazard is under analyzed, under researched, and under reported," he said, adding that exposures could create respiratory harms comparable in mechanism to cigarette smoke because people inhale polluted air continuously.

Why it matters: panelists warned that large sections of lakebed already are exposed and that, if the lake continues to decline, wind‑blown dust could spread contaminants to population centers on the Wasatch Front. Mensch cited multiple potential contaminant sources discussed at the forum: roughly 28 sewage treatment plants discharging into the basin, more than a century of mining near the lake, industrial chemical producers and legacy radionuclide fallout from historic weapons testing.

Specific advice and community steps: Mensch urged a two‑track response. For personal protection he recommended placing an air purifier in bedrooms, noting inexpensive DIY purifiers are effective, and using N95 masks when PM2.5 is in higher categories. For broader mitigation he urged public pressure—letters, phone calls and protests—to compel legislators to act. "If a legislator gets 15, 20 calls, then they start to think about writing a bill," he said.

Panel context: the physician framed the risks alongside the experiences of other desiccated inland lakes — citing the Aral Sea (referred to in the discussion as RLC) and examples of dramatic local health and social costs where lakes dried. He emphasized the need for both immediate personal mitigation and systemic policy changes to reduce emissions and restore inflows.

Next steps: panelists said research, monitoring and legal pressure are already in motion (Mensch noted his organization is a plaintiff in litigation seeking increased water deliveries), while urging residents to adopt low‑cost protective measures and to press elected officials for funding and regulation.