Monitoring the environment

Middle Yarra weekly E.coli results 2013


Weekly E.coli results (number of organisms per 100mL) over the last three months

Sample date Warrandyte Templestowe Heidelberg Kew
9-Oct-13 110 N/A 84 110
2-Oct-13 Stormwater advisory 20 N/A 210 240
25-Sept-13 97 N/A 150 140
18-Sept-13 820 N/A 960 840
11-Sept-13 52 N/A 52 63
4-Sept-13 10 N/A 110 240
28-August-13 200 N/A 360 280
21-August-13 63 N/A 41 84
14-August-13 Stormwater advisory 41 N/A 30 200
7-August-13 170 N/A 880 680
31-July-13 130 N/A 86 97
24-July-13 Stormwater advisory 320 N/A 820 770
17-July-13 31 N/A 110 98
10-July-13 86 N/A 190 220
3-July-13 74 N/A 210 410
26-June-13 110 N/A 85 120
19-June-13 260 N/A 380 550
12-June-13 96 N/A 160 270
5-June-13 Stormwater advisory 500 N/A N/A 280
29-May-13 63 N/A 85 300
22-May-13 200 N/A 260 270
15-May-13 85 N/A 250 430
8-May-13 41 N/A 190 290
1-May-13 41 N/A 160 230
23-Apr-13 74 N/A 650 960
17-Apr-13 110 N/A 440 690
10-Apr-13 230 N/A 230 20
3-Apr-13 Stormwater advisory 52 N/A 240 460
27-Mar-13 562 N/A 160 200
20-Mar-13 140 N/A 460 160
13-Mar-13 41 N/A 240 230
6-Mar-13 Stormwater advisory 74 N/A 450 210
27-Feb-13 Stormwater advisory 500 3100 5200 3100
20-Feb-13 41 170 74 85
13-Feb-13 86 370 380 96
6-Feb-13 74 250 160 220
30-Jan-13 210 86 690 840
23-Jan-13 84 180 86 98
16-Jan-13 52 120 62 63
9-Jan-13 180 190 63 480
2-Jan-13 41 86 63 120
27-Dec-12 63 160 160 280
19-Dec-12 Stormwater advisory 110 86 200 270
12-Dec-12 74 74 200 130
5-Dec-12 Stormwater advisory 74 110 200 3700
28-Nov-12 Stormwater advisory 41 990 3900 2600
21-Nov-12 52 52 96 97
14-Nov-12 41 63 97 41
7-Nov-12 220 440 180 300
31-Oct-12 180 110 86 63
24-Oct-12 74 20 63 160
17-Oct-12 160 36 380 470
10-Oct-12 110 440 150 590
3-Oct-12 96 180 190 270
26-Sep-12 63 74 74 86
19-Sep-12 110 97 63 110
12-Sep-12 74 85 63 190
5-Sep-12 110 98 52 110
29-Aug-12 31 31 31 63
22-Aug-12 Stormwater advisory 120 140 200 230
15-Aug-12 Stormwater advisory 200 130 1200 170
8-Aug-12 63 150 230 63
1-Aug-12 Stormwater advisory 170 250 210 370
25-Jul-12 31 74 31 20
18-Jul-12 63 98 85 130
11-Jul-12 63 98 120 170
4-Jul-12 1200 1100 2100 2800
27-Jun-12 Stormwater advisory 460 370 530 660
20-Jun-12 97 110 130 150
13-Jun-12 31 170 74 130
6-Jun-12 Stormwater advisory 430 820 320 460
30-May-12 Stormwater advisory 490 910 990 710
23-May-12 97 120 98 84
16-May-12 600 380 500 350
9-May-12 Stormwater advisory 120 280 200 2100
2-May-12 Stormwater advisory 98 2500 1600 4900
24-Apr-12 430 3700 960 2600
18-Apr-12 20 170 150 230
11-Apr-12 190 410 810 2100
4-Apr-12 63 120 200 220
28-Mar-12 41 380 160 160
21-Mar-12 96 170 170 340
14-Mar-12 85 160 110 230
7-Mar-12 Stormwater advisory 97 250 240 360
29-Feb-12 Stormwater advisory 360 840 3900 1700
22-Feb-12 86 190 110 240
15-Feb-12 Stormwater advisory 97 120 160 84
8-Feb-12 85 200 140 97
1-Feb-12 110 270 190 260
25-Jan-12 31 120 110 330
18-Jan-12 63 110 250 200
11-Jan-12 170 97 390 330
4-Jan-12 Stormwater advisory 200 5900 960 2400
28-Dec-11 1600 2000 1800 6900
21-Dec-11 180 280 380 440
14-Dec-11 480 770 730 620
30-Nov-11 350 390 670 430
23-Nov-11 270 370 390 330
16-Nov-11 320 1100 780 2100
9-Nov-11 Stormwater advisory 3100 1700 1500 4600
2-Nov-11 Stormwater advisory 570 520 350 450
26-Oct-11 480 610 130 200
19-Oct-11 52 110 74 52
12-Oct-11 98 63 120 120
5-Oct-11 190 74 130 170
28-Sep-11 Stormwater advisory 52 86 63 130
21-Sep-11 63 240 750 280
14-Sep-11 540 310 310 240
07-Sep-11 41 10 98 86
01-Sept-11 20#
31-Aug-11 31 41 30 74
24-Aug-11 74 63 63 120
17-Aug-11 97 52 31 120
10-Aug-11 330 790 500 430
03-Aug-11 10 31 63 31
27-Jul-11 170 170 250 220
20-Jul-11 390 300 370 230
13-Jul-11 120 220 110 180
06-Jul-11 86 63 63 340
30-Jun-11 96 < 10 110 120
23-Jun-11 2900 1500 3300 1100
15-Jun-11 Stormwater advisory 31 63 110 130
8-Jun-11 220 610 600 860
1-Jun-11 74 74 30 130
25-May-11 Stormwater advisory 640 500 640 640
18-May-11 Stormwater advisory 230 350 370 430
11-May-11 5200 6900 480 720
4-May-11 110 220 310 860
27-Apr-11 52 63 85 130
20-Apr-11 Stormwater advisory River user's alert 41 110 910 860
13-Apr-11 Stormwater advisory River user's alert 8700 3900 8700 11000
6-Apr-11 31 98 120 110
30-Mar-11 97 110 170 210
23-Mar-11 10 210 190 290
16-Mar-11 Stormwater advisory 74 450 840 710
09-Mar-11 20 52 74 230
02-Mar-11 20 74 200 350
23-Feb-11 Stormwater advisory 98 97 170 130
16-Feb-11 Stormwater advisory 10 140 110 280
9-Feb-11 Stormwater advisory 280 350 860 730
2-Feb-11 190 41 120 160
27-Jan-11 41 150 150 250
19-Jan-11 Stormwater advisory River user's alert 110 230 290 370
12-Jan-11 Stormwater advisory River user's alert 3100 24000 9200 9800
5-Jan-11 430 150 130 170

* E.coli organisms per 100mL were elevated. A follow up sample will be taken.

# Results from a follow up sample taken where the initial sample returned an elevated number of E.coli organisms per 100mL.

Alert Stormwater advisory - issued when there has been significant rainfall. The advisory will apply to individual sections of the river, Upper, Middle or Lower Yarra, if rainfall has been localised, or to the entire river if rainfall is widespread.

Alert River user's alert - issued when a single very high E.coli result or pollution incident may affect local recreational water quality.

Page last updated on 14 Oct 2013