Ronald C. Dressman is a retired chemist who did applied research in the fields of surface-water pollution control and identification and control of contaminants in drinking water. He completed twenty seven years of service with the United States Environmental Protection agency and predecessor agencies. He received a Bachelor of Science degree from the University of Cincinnati with his major fields of study being chemistry and biological sciences. He has dozens of publications to his credit in peer-reviewed scientific journals, and has presented numerous of these and other papers at regional and national conferences. This is his first book.