Beta Beta Beta (biology scholastic honorary)
Epsilon Tau Lambda (adult scholastic honorary: University of Miami) 1969-1972
National Institutes of Health Postdoctoral Traineeship 1973
Fellow, American Academy of Microbiology 1993
Waksman Lectureship Fellow, American Society for Microbiology 2005-2007
Fellow, American Association for the Advancement of Science 2009
Fellow, International Water Association 2010
Listed in Who's Who in Technology Today, 1984, 1986, 1989 eds.
Listed in International Who's Who in American Education, 1992-1993, 1995, 1996- 1997, eds.
Listed in Who's Who in the West, 1987-present
Listed in Who's Who in Emerging Leaders in America, 1989-1990, 1991-1992, eds.
Listed in Who's Who in the World, 1989-1995-present
Listed in American Men & Women of Science, 1992-1993, 1996-1997-present
Listed in Who's Who in Science and Engineering, 1992-1993, 1996-1997, eds.
Listed in Who's Who in America, 1994 - present
Listed in Who’s Who in Medicine and Healthcare, 1997-1998-present
Outstanding Research Scientist Award, College of Agriculture, The University of Arizona 1984
Environmental Science and Engineering Fellow, American Association for the Advancement of Science 1984
Tribute of Appreciation, Criteria and Standards Division, Office of Drinking Water, U.S. Environmental Protection Agency 1984
Service Award for Public Health, Pima County Health Department 1984
Outstanding Team Research Award, College of Agriculture, The University of Arizona 1992
Co-Recipient of Mckee Award (for outstanding contribution to groundwater protection), Water Environmental Federation
Recipient of the A.P. Black Research Award for outstanding contributions 1996
to Water Science, American Water Works Association Honorary Lifetime
Membership Award for dedicated service to the water treatment industry, Water Quality Association 1997
Award of Excellence in Environmental Health for outstanding and innovative research program, The National Association of Country and City Health Officials 1998
Selected as one of the 21 most influential people in the water industry in the 21st century by Water Technology Magazine 2000
Best Paper Published in the Journal of the American Water Works Association, Water Resources
Best Paper Published in the Journal of the American Water Works Association.
Water Science and Research Division 2005
Shah Distinguished Lectureship in Risk Assessment, Stanford University 2005
Quentin Mees Research Award for outstanding research in applied water science Arizona Water Pollution Control Association 2007