Michael H. Gerardi holds an MS in biology from James Madison University. In addition to the prior books in Wiley's Wastewater Microbiology Series, he has authored more than 100 technical publications and has provided wastewater microscopy and consulting services to numerous municipal and industrial wastewater treatment plants. He is currently responsible for the development and presentation of wastewater biology courses at The Pennsylvania State University. Mr. Gerardi can be reached at hemlockstables@uplink.net.