2007 – Wallaga Lake (New South Wales) – E.coli

26 November 2007 – Wallaga Lake Koorie Village (New South Wales) – E.coli
From a total of 1,140 samples, 2 E.coli detections occurred from 1 Jan 2004 to 31 Mar 2014.
Detection dates: 26 Nov 2007 and 2 Mar 2009 at sample sites 612 and 714 in Wallaga Lake
Koorie Village and Beauty Point respectively. In both instances 1 cfu/100mL was detected.
Re‐sampling was undertaken with no E.coli detected.

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