Colin Mayfield is a Professor of Microbiology at the University of Waterloo in Waterloo, Ontario, Canada where he was also Associate Dean of Computing. He is a graduate of the University of Liverpool in England where he received his B.Sc. and Ph.D. in Biology. His research interests include water microbiology, soil microbiology, groundwater systems, aquatic toxicology, and integrated water resource management studies. He has authored or co-authored over 200 papers in those areas and has worked as a consultant for many governments, international and national agencies, and various companies. He has taught many microbiology and IWRM courses; many of them were also given through Distance Learning programs at the University of Waterloo and UNU-INWEH.