2007 September – 2016 August. Matthews Creek Geelong Water Supply. Pesticides: MCPA, 2,4-D, Dicamba

Matthews Creek flow is diverted and channeled into Wurdee Boluc Inlet Channel about 5-6km south west of Deans Marsh. Farmland occurs upstream of the offtake. This is the location of the highest levels of the herbicide MCPA in a domestic water supply in Victoria. These levels have occurred since 2011. No detections of MCPA have been recorded at Wurdee Boluc Reservoir, some 23 km away,

18/9/07 Barwon Water Matthews Creek MCPA 0.07ug/L (0.175%adwgh)

15/12/09 Barwon Water Matthews Creek (Geelong) MCPA 0.07ug/L (0.175%adwgh)

15/12/09 Barwon Water Matthews Creek 2,4-D 0.05ug/L (0.1667%adwgh)

10/9/10 Barwon Water Matthews Creek MCPA 0.48ug/L (1.2%adwgh)

17/8/10 Barwon Water Matthews Creek MCPA 0.26ug/L (0.65%adwgh)

21/9/10 Barwon Water Matthews Creek MCPA 0.02ug/L (0.05%adwgh)

19/7/11 Barwon Water Matthews Creek MCPA 2.4ug/L (6%adwgh). The second highest level of MCPA recorded in a domestic water supply in Victoria.

20/9/11 Barwon Water Matthews Creek MCPA 0.03ug/L (0.075%adwgh)

6/8/12 Barwon Water Matthews Creek MCPA 2.4ug/L (6%adwgh). The second highest level of MCPA recorded in a domestic water supply in Victoria.

6/8/12 Barwon Water Matthews Creek 2,4-D 0.03ug/L (0.1% adwgh)

6/8/12 Barwon Water Matthews Creek MCPA 0.04ug/L (0.1%adwgh)

17/9/13 Barwon Water Matthews Creek MCPA 4.6ug/L (11.5% adwgh). The highest level of MCPA recorded in a domestic water supply in Victoria.

18/12/12 Barwon Water Matthews Creek MCPA 0.02ug/L (0.05% adwgh)

17/9/13 Barwon Water Matthews Creek Dicamba 0.35ug/L (0.35% adwgh)

17/12/13 Barwon Water Matthews Creek Triclopyr 0.02ug/L (0.1%adwgh)

15/7/14 Barwon Water Matthews Creek MCPA 0.01ug/L (0.025% adwg)

11/10/14 Barwon Water Matthews Creek MCPA 0.01ug/L (0.025% adwg)

16/12/14 Barwon Water Matthews Creek Triclopyr 0.21ug/L (1.05% adwg)

16/12/14 Barwon Water Matthews Creek MCPA 0.05ug/L (0.125% adwg)

14/7/15 Barwon Water Matthews Creek MCPA 0.1ug/L (0.25% adwg)

14/7/15 Barwon Water Matthews Creek MCPA 0.08ug/L (0.2% adwg)

27/8/16 Barwon Water Matthews Creek Triclopyr 0.01ug/L (0.05% adwg)

27/8/16 Barwon Water Matthews Creek MCPA 0.04ug/L (1% adwg)

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