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air-pollution

Chemistry's John D. Protasiewicz discusses toxic hydrogen sulfide in Mentor’s sewer system

Media | January 09, 2026 | Story by: Editorial Staff

It’s on fire’: EPA finds toxic sewer gas after Mentor residents say their complaints went nowhere

cleveland.com: John D. Protasiewicz, the Hurlbut Professor of Chemistry at the College of Arts and Sciences, said hydrogen sulfide detected in Mentor’s sewer system is toxic and can be fatal, citing deadly exposures elsewhere. His comments underscored the serious public health risk facing residents after the EPA found dangerously high levels of the gas following years of unresolved odor complaints.