Charles Delos
Senior Research Scientist
Aquatic Toxicology
Charlie joined the GLEC team in 2014 after 40 years with the U.S. EPA’s Office of Water where he was the senior scientist in the aquatic life criteria program, applying his deep expertise in aquatic toxicology, exposure modeling, and risk assessment. At EPA, he was instrumental in developing and implementing national water quality criteria and conducting large scale and site-specific pollutant exposure and risk assessments. Charlie was key in developing EPA’s selenium, ammonia, copper, and cadmium criteria, a copper saltwater biotic ligand model criterion, and revised criteria for aluminum, chloride, and atrazine. He wrote the most recent versions of EPA’s site-specific procedures for bioavailability adjustment (Water-Effect Ratio) and the species assemblage adjustment (Recalculation Procedure). His current work at GLEC continues to focus on providing solutions for problems in aquatic life criteria development, NPDES permit limit derivation, and various types of risk assessment. Charlie has a M.S. in Water Resource Sciences from the University of Michigan.


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Great Lakes Environmental Center

739 Hastings Street
Traverse City, MI   49686

Phone: (231) 941-2230
Fax: (231) 941-2240