Dr. Kevin Custer

Senior Environmental Toxicologist

EnviroScience Senior Environmental Toxicologist

Kevin Custer, Ph.D., serves as a Senior Environmental Toxicologist and has been a valued member of EnviroScience since joining in October 2023. With a strong focus on aquatic environments, Kevin has worked in the environmental field since 1999 and started his professional career at the U.S. Department of Agriculture-Natural Resources Conservation Service. He specializes in aquatic and sediment ecotoxicology, stream ecology, and environmental compliance, focusing on UCMR 5/Drinking Water and Wastewater Compliance; he is a PFAS subject matter expert.

Kevin’s favorite part of working at EnviroScience is collaborating with staff on technical projects spanning multiple disciplines. He thoroughly enjoys being part of a team committed to solving complex environmental challenges.

Kevin earned an Associate of Science from Sinclair Community College, a Bachelor of Science in Natural Resources – Fisheries Management at The Ohio State University, a Master of Science in Biological Sciences – Aquatic Ecotoxicology, and a Ph.D. in Environmental Sciences – Aquatic Ecotoxicology at Wright State University. He worked as a Post-doctoral Associate in the Biology Department at the University of Dayton.

Kevin enjoys spending time with his wife and two children, camping in state parks, canoeing, fishing, hunting, brewing beer, and walking his dog, Moose.

Contact Kevin at:  KCuster @ EnviroScienceInc.com


Few environmental firms in the country retain EnviroScience’s degree of scientific know-how, talent, and capability under one roof. The diverse backgrounds of our biologists, environmental engineers, scientists, and divers enable us to provide comprehensive in-house services and an integrated approach to solving environmental challenges—saving clients time, reducing costs, and ensuring high-quality results.

Our client guarantee is to provide “Excellence in Any Environment,” meaning no matter what we do, we will deliver on our Core Values of respect, client advocacy, quality work, accountability, teamwork, and safety. EnviroScience was created with the concept that we could solve complex problems by empowering great people. This concept still holds true today as our scientists explore the latest environmental legislation and regulations and incorporate the most up-to-date technology to gather and report data.

EnviroScience expertise includes but is not limited to aquatic surveys (including macroinvertebrate surveys and biological assessments); ecological restoration; ecological services (including impact assessments, invasive species control, and water quality monitoring);  emergency response; engineering and compliance services; endangered mussel surveys; laboratory and analysis; stormwater management; threatened and endangered species; and wetlands and streams (including delineation and mitigation). Further, EnviroScience is one of the few biological firms in the country that is a general member of the Association of Diving Contractors International (ADCI) and offers full-service commercial diving services.