2012 – 2013: Orchard Hills Water Treatment Facility: Pesticide: Triclopyr

The herbicide triclopyr was detected in a raw water sample collected on 18 July 2012 from the inlet to Nepean WFP, from the inlet to Orchard Hills WFP on 25 September2012 and from the inlet to Warragamba WFP on 27 October 2012. All detections were at a level well below the ADWG 2011 health guideline value. None of the otherpesticides / herbicides listed in Table 32 were detected during the 12-month periodfrom 1 April 2012 to 31 March 2013.

p48: Sydney Water Drinking Water Quality Report 1 Jan 2013 – 31 March 2013

https://www.sydneywater.com.au/web/groups/publicwebcontent/documents/document/zgrf/mduy/~edisp/dd_052257.pdf

Orchard Hills Water Filtration Plant

2012/13: Inflow: Triclopyr 0.01ug/L (b)

(b) https://www.sca.nsw.gov.au/__data/assets/pdf_file/0004/44590/Annual-Water-Quality-Monitoring-Report-2012-13-Appendices.pdf