Bachelor Agriculture Science with honours, University Tasmania, 1979. Doctor of Philosophy, University Tasmania, 1984.
Research microbiologist Sugar Research Institute, Mackay, Australia, 1984—1987. Research fellow microbiology Australian Nuclear science and Technology Organization, Lucas Heights, 1987—1988. Director Australian collection Antarctic microorganisms University Tasmania, 1989—1990.
Section leader environmental pathogens Sydney Water Board, 1990—1991, principal scientist for wastewater Australian Water Technology science and environmental, 1991—1994. Associate professor water microbiology University New South Wales, 1994—2003, professor, since 2004. Deputy director Center for Water and Waste Technology, University New South Wales, Sydney, 1996-2005, head School Civil and Environmental Engineering, since 2005.
Advisor American Water Works Associate Research Foundation, Denver, since 1996. Microbiology advisor World Health Organization, Geneva, since 1998. Microbiology specialist National Health and Medical Research Council, Canberra, ACT, Australia, since 1996, expert advisor, since 1998.
Member expert panel Sydney Catchment Authority, since 2000. Managing director Water and Microbial Risk Assessment, Sydney, since 2000. Participant numerous conferences.
Member Australian Society for Microbiology, American Society for Microbiology, International Water Association (national representative 1998-2001).