Evaluation of microbial risk in the Bull Run Catchment, Portland, Oregon

In drinking water watersheds protection of source water, minimising transport of pathogen loads to reservoirs is a critical first barrier to contamination of the water supply and hence an important priority for the management of drinking water quality.  A process-based mathematical model (pathogen catchment budgets - PCB) was developed in collaboration with Christobel Ferguson (Australian Laboratory Services) to predict Cryptosporidium, Giardia and E. coli loads generated within and exported from drinking water watersheds.  ALS and ANU are extending the model for use in evaluating the microbial risk in the Bull Run catchment (the main water supply for the city of Portland), to predict the delivery of pathogen loads at water reservoir off-take points and to prioritize the implementation of control measures for the reduction of pathogen risks to the drinking water supply.


October 2006 to June 2008


This project was funded by Portland Water Bureau.

Dr Christobel Ferguson (ALS)
Christobel Ferguson is the Group Manager Water Science for ALS Water Resources. The group provides technical advice on water resource management and aquatic ecology to the water industry. The group also conducts strategic water quality research projects designed to deliver innovative and novel solutions to managers in the water, environment and mining industries. She is Co-Convenor of the Catchment Management Specialist Network of the Australian Water Association, a member of the International Water Association and a graduate of the Australian Institute of Company Directors.


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