2016/18: Lake Trevallyn, Tasmania. Atrazine, MCPA, Prometryn

Trevallyn Dam/Lake Trevallyn

17 May 2016: South Esk Trevallyn Dam MCPA 0.02ug/L*

11 August 2016: South Esk Trevallyn Dam MCPA 0.26ug/L

11 August 2016: South Esk Trevallyn Dam Prometryn 0.03ug/L

30 August 2016: South Esk Trevallyn Dam MCPA 0.11ug/L

8 September 2016: South Esk Trevallyn Dam MCPA 0.09ug/L

17 November 2016: South Esk Trevallyn Dam MCPA 0.09ug/L

TasWater Pesticide Data by system v4 2016/17

8/8/18: There was a detection of a pesticide (atrazine – 27 ug/L) above the ADWG health limit on 8 August  2018. This was the first detection of atrazine in Lake Trevallyn since sampling for pesticides began in  2015.
An error occurred with the laboratory notification process which resulted in this exceedance not  being highlighted, and therefore there was no immediate resample. However, there have been no  detections of atrazine in any samples since August 2018.

TasWater Annual Drinking Water Quality Report 2018-2019 Section A Summary

*RTI application