The supply of unfiltered disinfected drinking water from Melbourne's fully protected catchments means that the water-quality managers must ensure that the source water poses no public health risk. High turbidity is currently used as a surrogate of pathogens, and harvesting of water is based on its measurement. The work presented here summarises suspended particle and associated pathogen, microbial indicator and faecal biomarker concentrations collected to (a) quantify turbidity in an Australian water supply system and (b) assess the possibility of increasing water harvesting from selected tributaries. Pathogens and microbial indicators were present in low numbers in these source waters; increased turbidity during storm events was not associated with an increase in pathogen concentration. The results confirmed that protected catchments, along with good management, were effective barriers to pathogen contamination. Aesthetic issues still need to be addressed, but no measurable increase in microbiological risk was associated with storm-generated particles.
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Research Article|
July 01 2004
Assessing the health implications of turbidity and suspended particles in protected catchments
K. Cinque;
*Melbourne Water, PO Box 4342, Melbourne, Victoria, Australia
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M.A. Stevens;
M.A. Stevens
*Melbourne Water, PO Box 4342, Melbourne, Victoria, Australia
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D.J. Roser;
D.J. Roser
**School of Civil and Environmental Engineering, UNSW, Sydney, NSW, Australia and Cooperative Research Centre for Water Quality and Treatment, SA, Australia
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N.J. Ashbolt;
N.J. Ashbolt
**School of Civil and Environmental Engineering, UNSW, Sydney, NSW, Australia and Cooperative Research Centre for Water Quality and Treatment, SA, Australia
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R. Leeming
R. Leeming
***CSIRO Marine Research, GPO Box 1538, Hobart, Tasmania, Australia
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Water Sci Technol (2004) 50 (1): 205–210.
Citation
K. Cinque, M.A. Stevens, D.J. Roser, N.J. Ashbolt, R. Leeming; Assessing the health implications of turbidity and suspended particles in protected catchments. Water Sci Technol 1 July 2004; 50 (1): 205–210. doi: https://doi.org/10.2166/wst.2004.0055
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