Michele Cassidy

Michele Cassidy
Sydney Water · Wastewater and Environment

About

10
Publications
1,571
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163
Citations
Citations since 2017
10 Research Items
162 Citations
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201720182019202020212022202301020304050
201720182019202020212022202301020304050

Publications

Publications (10)
Article
In this study, ChemcatcherTM (CC) and Polar Organic Chemical Integrative Samplers (POCIS) passive samplers were chosen to investigate trace organic chemical residues in urban streams of the megacity of Sydney, Australia. In situ calibration with these passive samplers investigated 1392 organic chemicals. Six sets of CC passive samplers fitted with...
Article
Quantitative Microbial Risk Assessment (QMRA) of human health risks using human fecal marker genes (HFMGs) is an attractive water quality management tool. To inform accurate QMRA analysis, generation of probability distribution functions for HFMGs, and reference pathogenic viruses can be improved by input of correlation and ratios based upon measur...
Article
Public complaints arise from visible gross pollutants deposited on receiving waterway margins and in associated riparian vegetation after sewer overflows. The current study was conducted to assess the capability of a modified commercial stormwater trash-net to capture gross pollutants that spill from overflows of a sanitary (separate from stormwate...
Article
Full-text available
Macroinvertebrate surveys are commonly used for assessing the health of freshwater systems around the world. Traditionally, surveying involves morphologically identifying the families, and sometimes genera, present in samples. Biological indices, derived from taxonomic lists, provide convenient ways to summarise community data and may be fairly ins...
Article
This study aimed to determine the prevalence and abundance of sewage and animal fecal contamination of sediment at seven estuarine locations in Sydney, NSW, Australia. Sediment samples were tested for the occurrence of microbial targets including molecular marker genes of enterococci (ENT), Bacteroides HF183 (HF183), Methanobrevibacter smithii (nif...
Article
The application of quantitative polymerase chain reaction (qPCR) based microbial source tracking (MST) marker genes are increasingly being used to identify contaminating sources and inform management decisions. In this study, we assessed interlaboratory agreement on duplicate environmental water samples collected from estuarine and freshwater locat...
Article
This study investigates the impact of wet weather overflows (WWOs) at three estuarine locations in Sydney, NSW, Australia. WWOs can occur when infiltration of stormwater leads to an excess volume of flow within the sewerage system, resulting in the release of diluted sewage into the environment. Sewage contamination poses a risk to human health due...
Article
Full-text available
This study investigated the magnitude of wet weather overflow (WWO)-driven sewage pollution in an urban lake (Lake Parramatta) located in Sydney, New South Wales, Australia. Water samples were collected during a dry period and after two storm events, and tested for a range of novel and established sewage- [Bacteroides HF183, crAssphage CPQ_056 and...
Article
Full-text available
The HF183 marker gene, derived from the 16S rRNA gene of Bacteroides dorei, has been widely used to identify sewage pollution in environmental waters. CrAssphages are recently discovered DNA bacteriophages that are highly abundant in untreated sewage and have shown promises for tracking sewage contamination in environmental waters. In this paper, w...
Article
Considerable efforts have been made in recent years in developing novel marker genes for fecal pollution tracking in environmental waters. CrAssphage are recently discovered DNA bacteriophage that are highly abundant in human feces and untreated sewage. In this study, we evaluated the host-sensitivity and -specificity of the newly designed crAsspha...

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