2007 April – Taradale (Victoria) – E.coli

Taradale (Victoria) – E.coli
11/4/07: Taradale (Victoria) 1org/100mL (at customer tap).
Possibly due to a faulty air valve – able to allow water to be sucked into reticulation system from pit. Air valve was replaced and re-sampling completed showing no further E.Coli
“E.coli

Thermotolerant coliforms are a sub-group of coliforms that are able to grow at 44.5 ± 0.2°C. E. coli is the most common thermotolerant coliform present in faeces and is regarded as the most specific indicator of recent faecal contamination because generally it is not capable of growth in the environment. In contrast, some other thermotolerant coliforms (including strains of Klebsiella, Citrobacter and Enterobacter) are able to grow in the environment and their presence is not necessarily related to faecal contamination. While tests for thermotolerant coliforms can be simpler than for E. coli, E. coli is considered a superior indicator for detecting faecal contamination…” ADWG