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Pieter A. Sheehan, REHS

St. Charles County Department of Community Health and the Environment

St. Charles, MO 63301



Pieter A. Sheehan has been with the St. Charles County, Department of Community Health and the Environment in St. Charles, Missouri since October, 2006. Prior to St. Charles County he was with St. Louis County Department of Health in Clayton, Missouri, Monterey County Department of Health in Salinas, California and Maricopa County Department of Environmental Services in Phoenix, Arizona. He started as an air quality inspector with Maricopa County moving on to become a senior environmental health specialist in solid and hazardous waste management in Monterey County.  Mr. Sheehan moved to the Midwest and joined St. Louis County as a supervising environmental public health specialist in consumer protection. He currently is the manager of the environmental public health program with St. Charles County.


Pieter has a BS in Microbiology from the University of Arizona in Tucson, Arizona. He is currently a registered environmental health specialist (sanitarian) in the states of Arizona, California, and Missouri and also holds a national REHS certification with the National Environmental Health Association.

Leadership Development Opportunities

I am a natural skeptic! When this journey started I was worried if I could meet the expectations of the Institute. The past year has flown by and one thing I can say is the Institute has far exceeded any expectations I had of it. This experience has been life-enriching and has left me with tools that will allow me to excel as a leader in the field of environmental health. I would like to thank EPHLI for the opportunity to meet peers from all over the United States and experience being an EPHLI fellow.