Nepean Water Filtration Plant
2006/7: 2,4-D 0.08 ug/L (f)
(f)http://www.sca.nsw.gov.au/__data/assets/pdf_file/0007/36268/AWQMR2007_Appendices.pdf
2011/12: Triclopyr 0.02ug/L (e)
(e) http://www.sca.nsw.gov.au/__data/assets/pdf_file/0004/36265/AWQMRapps0910.pdf
2012/13: Triclopyr 0.015 ug/L (med), 0.02ug/L (max) (b)
2013/14: Triclopyr 0.02ug/L (a)
https://www.sydneywater.com.au/web/groups/publicwebcontent/documents/document/zgrf/mduy/~edisp/dd_052257.pdf
The herbicide triclopyr was detected .. on 16 May 2013 from the inlet to Nepean WFP, and 19 August 2013 from the inlet to Warragamba WFP. All detections were at a level well below the ADWG 2011 health guideline value. None of the other pesticides / herbicides listed in Table 32 were detected during the 12-month period from 1 October 2012 to 30 September 2013.
https://www.sydneywater.com.au/web/groups/publicwebcontent/documents/document/zgrf/mdu1/~edisp/dd_055501.pdf