Nick Ashbolt

BAgSc PhD Tas., MASM

Professorial Visiting Fellow

Contact Details

Office Location:
External
Email: n.ashboltroberto@unsw.edujlo.au

Teaching Areas

• Public Health and Environmental Microbiology
• Biological Nutrient Removal
• Environmental Engineering and microbial risk assessment

Research Areas

• Structure and function of biofilms in engineered systems.
• Microbial risk assessment in water treatment, reuse and disposal.
• Survival and growth of microbial pathogens in water systems
• Structure and function of biofilms in engineered systems
• Performance of decentralized urban water systems
• Microbial risk assessment and application to the development of new WHO and NHMRC water guidelines

Selected Publications (2001-2005)

Ashbolt, N.J., W.O.K. Grabow and M. Snozzi (2001). Indicators of microbial water quality. In Fewtrell, L. and Bartram, J. (ed.), Water Quality: Guidelines, Standards and Health. Risk assessment and management for water-related infectious disease. IWA Publishing, London pp:289-316.

Ashbolt, N. J. (2003). Methods to identify and enumerate frank and opportunistic bacterial pathogens in water and biofilms. In Cotruvo, J. and Bartram, J. (eds.), HPC: Bacteria in Drinking Water and Public Health. IWA Publishing, London.

Ashbolt, N. J. (2004). Microbial contamination of drinking water and disease outcomes in developing regions. Toxicology 198 (1-3):229-238.

Ashbolt, N. J. (2004). Risk analysis of drinking water microbial contamination versus disinfection by-products (DBPs). Toxicology 198 (1-3):255-262.

Ashbolt, N.J., Petterson, S. R., Roser, D. R., Westrell, T., Ottoson, J., Stenström, T. A. (2005). Microbial risk assessment tool to aid in the selection of sustainable urban water systems. In 2nd IWA Leading-Edge on Sustainability in Water-Limited Environments. (Eds MB Beck and A Speers). IWA Publishing, London.

Chung J., Vesey, G., Gauci, M. and Ashbolt, N. J. (2004). Fluorescence resonance energy transfer (FRET)-Based specific labeling of Cryptosporidium oocysts for detection in environmental samples. Cytometry Part A 60A (1): 97-106.

Davies, C. M., Ferguson, C. M., Kaucner, C., Krogh, M., Altavilla, N., Deere, D. A. and Ashbolt, N. J. (2004). Dispersion and transport of Cryptosporidium oocysts from fecal pats under simulated rainfall events. Applied and Environmental Microbiology 70(2):1151-1159.

Deere, D., Vesey, G, Ashbolt, N. and Gauci, M. (2002). Flow cytometry and cell sorting for monitoring microbial cells. In G. Bitton (ed.), Encyclopedia of Environmental Microbiology. John Wiley and Sons, New York. Vol 4:1944-1958.

Davies, C., Kaucner, C., Altavilla, N., Ashbolt, N., Hijnen, W., Medema, G., Deere, D., Krogh, M. and Ferguson, C. (2005). Fate and transport of surface water pathogens in watersheds. American Water Works Association Research Foundation, Denver.

Davies, C.M., Altavilla, N., Krogh, M., Ferguson, C.M., Deere, D.A. and Ashbolt, N.J. (2005). Environmental inactivation of Cryptosporidium oocysts in catchment soils. Journal of Applied Microbiology 98(2):308-317.

Fane, S., Ashbolt, N. J. and White, S.B. (2002). Decentralised urban water reuse: The implications of system scale for cost & pathogen risk. Water Science and Technology 46(6-7):281-288.

Höglund, C., Stenström, T. A. and Ashbolt, N. (2002). Microbial risk assessment of source-separated urine used in agriculture. Waste Management Research 20:150-161.

Kay, D., Bartram, J., Prüss, A., Ashbolt, N., Dufour, A., Wyer, M., Fleisher, J., Fewtrell, L. and Rogers, A. (2004). Derivation of numerical values for the World Health Organization guidelines for recreational waters. Water Research 38 (3):1296-1304.

Långmark, J., Storey, M. V., Ashbolt, N. J. and Stenström, T. A. (2004). Artificial groundwater treatment: biofilm activity and organic carbon removal performance. Water Research 38(4):740-748.

Långmark, J., Storey, M.V., Ashbolt, N.J., and Stenström, T.-A. (2005). The accumulation and fate of microorganisms and microspheres in biofilms formed in a pilot-scale water distribution system. Applied and Environmental Microbiology 71(2):706-712.

Petterson, S. R., Teunis, P. F. M. and Ashbolt, N. J. (2001). Modeling virus decay on salad crops using microbial count data. Risk Analysis 21(6):1097-1108.

Westrell, T., Bergstedt, O., Stenström, T. A. and Ashbolt, N. J. (2003). A theoretical approach to assess microbial risks due to failures in drinking water treatment. International Journal of Environmental Health Research 13(2):181-197.

Toh, S. K. and Ashbolt, N. J. (2002). Adaptation of anaerobic ammonium-oxidising consortium to synthetic coke-ovens wastewaters. Journal of Applied Microbiology and Biotechnology 59(2-3):344-352.

Professional Services

• WHO - committee member for drinking, recreational and reuse water guidelines development.
• IWA - National co-coordinator for Health-Related Water Microbiology special interest group, 1997-current.
• NH&MRC - Protozoa Working Group, provision for revised Drinking Water Guidelines, 1998, 1999. Cryptosporidium and Giardia guidelines discussion and other microbial contaminants; chair for recreational water guidelines.
• PAC for American Water Works Research Foundation (AWWARF) study on the role of NOM in structuring microbial communities- Implications for the treatment of drinking waters and the control of biofilms. Active interest with biofilm and public health IWA specialist groups
• Input into the national State of the Marine Environment Report
• Consultant to industry through Unisearch Ltd. in the area of public health

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