Microbial Risk Assessment and Microbial Pathogen Monitoring
G-MW is currently investigating and researching the possible risks of microbial pathogens (i.e. disease causing organisms such as bacteria, viruses and protozoa) contaminating G-MW water supply systems under an Environmental Management Program (EMPA4). These investigations will help to identify risks associated with pathogen loadings in G-MW catchment and will help to improve or deliver good quality water to G-MW customers.
1. Previous Pathogen Monitoring at Lake Eildon and Lake Eppalock
This review provides a summary of existing information relevant to pathogen monitoring at the Goulburn Murray Water (G-MW) assets, Lake Eildon and Lake Eppalock during 1971 to 2001. Bacterial indicator species were monitored in waters used for potable water, recreational purposes and irrigation and provide useful information as to the presence of potentially pathogenic bacteria. The most commonly used bacterial indicators belong to the coliform group, of which Escherichia coli (E. coli) is used as the main indicator of faecal pollution. Routine sampling of water from the lakes has taken place since the late 1960's. Water quality has been primarily assessed using total plate counts (TPC), total coliforms (TC) and E. coli however, testing for Enterococci and Salmonella spp. has occurred on occasion. Compliance with SEPP guidelines was consistently maintained. A risk-based pathogen-monitoring program was recommended.
For further information you can email Golam Kibria
Previous Pathogen monitoring at Lake Eildon and Lake Eppalock Report
2. Waterborne Zoonosis - A Literature Review
This document reviews the environmental route of transmission of zoonotic disease (diseases that can be transmitted between (or are shared by) animals and humans) and the links connecting transmission of waterborne pathogens between wildlife, livestock, domestic animals and the human population. There is an emphasis on how contaminated water supplies in Australia may act as a link in waterborne zoonosis. Zoonotic microbes (bacteria, viruses and parasites) that may be transmitted via a waterborne route are presented.
For further information you can email Golam Kibria
Water borne zoonosis literature review
3. Sampling regime for the pilot pathogen study
The report provides a design for a 12 months pilot pathogen study. It includes the aims of the study, selection of sites for ‘targeted sampling', and sampling frame for external comparison sites and sites on irrigation channels and drains. The pilot study aimed to document base line pathogen data, to detect priority pathogens, and to identify pathogen contaminating sources. It will assess animal and human pathogen loadings and frequency (emphasis on animal pathogen), and evaluate traditional (plate count) and advanced biochemical (faecal sterols) and molecular techniques (genetic fingerprinting) as tools for pathogen monitoring.
For further information you can email Golam Kibria
