1998 July – 2018 January: Barossa Weir. Pesticides detected: Atrazine, Hexazinone, Diazinon, Simazine, MCPA, Metsulfuron Methyl.

Barossa Weir: Contamination with Atrazine and Hexazinone for almost two years 1998-2000.

Barossa Weir

Atrazine: 1.47ug/L (9/7/98), 1.81ug/L (23/7/98), 1.73ug/L (6 Aug 98), 1.48ug/L (25 Sep 98), 1.46ug/L (15 Oct 98), 1.5ug/L (3 Dec 98), 1.69ug/L (17 Dec 98), 1.61ug/L (7 Jan 99), 1.58ug/L (14 Jan 99), 1.49ug/L (21 Jan 99), 1.52ug/L (28 Jan 99), 1.55ug/L (4 Feb 99), 1.8ug/L (18 Mar 99), 1.9ug/L (22 Mar 99), 1.5ug/L (13 May 99), 1.6ug/L (25 May 99), 1.4ug/L (29 May 99), 1.3ug/L (7 Jun 99), 1.3ug/L (13 Jun 99), 1.2ug/L (18 Jun 99), 1.2ug/L (9 Jul 99), 1.1ug/L (19 Jul 99), 1.1ug/L (9 Aug 99), 1.6ug/L (4 Sep 99), 1ug/L (29 Sep 99), 0.9ug/L (3 Oct 99), 0.9ug/L (10 Oct 99), 0.8ug/L (13 Oct 99), 0.8ug/L (10 Nov 99), 0.8ug/L (22 Nov 99), 0.8ug/L (3 Dec 99), 0.8ug/L (21 Feb 00), 0.8ug/L (24 Feb 00), 0.7ug/L (9 Mar 00), 0.7ug/L (23 Mar 00), 0.7ug/L (14 Apr 00), 0.6ug/L (20 Apr 00), 0.6ug/L (30 Apr 00), 0.6ug/L (13 May 00), 0.6ug/L (18 May 00), 0.5ug/L (27 May 00), 0.6ug/L (6 Jun 00), 0.5ug/L (22 Jun 00), 0.5ug/L (28 Jun 00).

Hexazinone: 1.27ug/L (25 Sep 98), 1.49ug/L (15 Oct 98), 1.63ug/L (3 Dec 98), 1.59ug/L (17 Dec 98), 1.51ug/L (7 Jan 99), 1.34ug/L (14 Jan 99), 1.31ug/L (21 Jan 99), 1.34ug/L (28 Jan 99), 1.36ug/L (4 Feb 99), 1.5ug/L (18 Mar 99), 1.5ug/L (22 Mar 99), 1.1ug/L (13 May 99), 1.4ug/L (25 May 99), 1.4ug/L (29 May 99), 1.2ug/L (7 Jun 99), 1.3ug/L (13 Jun 99), 1.2ug/L (18 Jun 99), 1.3ug/L (9 Jul 99), 1.2ug/L (19 Jul 99), 1.3ug/L (4 Sep 99), 0.9ug/L (29 Sep 99), 1ug/L (3 Oct 99), 1ug/L (10 Oct 99), 0.8ug/L (13 Oct 99), 1ug/L (10 Nov 99), 1ug/L (22 Nov 99), 0.9ug/L (3 Dec 99), 0.7ug/L (21 Feb 00), 0.8ug/L (24 Feb 00), 0.9ug/L (9 Mar 00), 0.8ug/L (23 Mar 00), 0.8ug/L (14 Apr 00), 0.8ug/L (20 Apr 00), 0.7ug/L (30 Apr 00), 0.8ug/L (13 May 00), 0.7ug/L (18 May 00), 0.6ug/L (23 May 00), 0.7ug/L (22 Jun 00), 0.8ug/L (28 Jun 00), 0.7ug/L (20 Jul 00), 0.7ug/L (26 Jul 00), 0.5ug/L (23 Aug 00).

1998 August 24 Diazinon 0.6ug/L

2004 June 23 Simazine 0.6ug/L

Source: SA Water 2011

Barossa Weir 2011-18

25/7/11: MCPA 0.05ug/L

20/8/12: MCPA 0.05ug/L

17/9/12: MCPA 0.06ug/L

15/10/12: MCPA 0.06ug/L

7/1/13: MCPA 0.05ug/L

24/6/13: MCPA 0.05ug/L

26/8/13: MCPA 0.06ug/L

23/9/13: MCPA 0.1ug/L

21/10/13: MCPA 0.08ug/L

18/11/13: MCPA 0.09ug/L

16/12/13: MCPA 0.05ug/L

10/2/14: MCPA 0.05ug/L

28/7/14: MCPA 0.33ug/L

28/7/14: Metsulfuron Methyl 0.06ug/L

25/8/14: MCPA 0.21ug/L

8/9/14: MCPA 0.05ug/L (WTP Inlet)

22/9/14: MCPA 0.07ug/L (sample pump)

8/10/14: MCPA 0.05ug/L (WTP Inlet)

11/3/15: MCPA 0.05ug/L (sample pump)

8/4/15: MCPA 0.05ug/L (sample pump)

4/5/15: MCPA 0.05ug/L (sample pump)

27/7/15: MCPA 0.05ug/L (sample pump)

24/8/15: MCPA 0.07ug/L (sample pump)

21/9/15: MCPA 0.07ug/L (sample pump)

19/10/15: MCPA 0.05ug/L (sample pump)

16/11/15: MCPA 0.05ug/L (sample pump)

14/12/15: MCPA 0.05ug/L (sample pump)

25/7/16: MCPA 0.09ug/L (sample pump)

22/8/16: MCPA 0.09ug/L (sample pump)

19/9/16: MCPA 0.07ug/L, Metsulfuron Methyl 0.07ug/L (sample pump)

17/10/16: MCPA 0.05ug/L (sample pump)

14/11/16: MCPA 0.06ug/L (sample pump)

21/8/17: MCPA 0.05ug/L (sample pump)

18/9/17: MCPA 0.09ug/L (sample pump)

16/10/17: MCPA 0.08ug/L (sample pump)

13/11/17: MCPA 0.07ug/L (sample pump)

11/12/17: MCPA 0.05ug/L (sample pump)

8/11/18: MCPA 0.06ug/L (sample pump)

Source SA Water 2015/18