Monitoring the environment

Upper Yarra weekly E.coli results 2013


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

Sample date Millgrove Launching Place Healesville Coldstream
9-Oct-13 63 290 180 120
2-Oct-13 180 680 500 160
25-Sept-13 52 140 210 170
18-Sept-13 190 820 3000 620
11-Sept-13 74 110 120 74
4-Sept-13 86 190 130 74
28-August-13 30 63 130 240
21-August-13 52 74 98 52
14-August-13 130 52 130 52
7-August-13 52 110 350 300
31-July-13 63 130 160 86
24-July-13 Stormwater advisory 52 130 170 250
17-July-13 41 63 200 240
10-July-13 84 97 150 260
3-July-13 20 170 340 220
26-Jun-13 63 63 170 190
19-Jun-13 150 150 300 240
12-Jun-13 20 97 120 250
5-Jun-13 Stormwater advisory 1300 120 260 500
29-May-13 52 130 74 210
22-May-13 52 110 270 270
15-May-13 110 360 490 350
8-May-13 85 410 NA NA
1-May-13 120 210 NA 260
23-Apr-13 310 1000 NA 300
17-Apr-13 180 280 NA 220
10-Apr-13 170 380 NA 220
3-Apr-13 240 260 NA 230
27-Mar-13 170 240 NA 98
20-Mar-13 160 280 520 270
13-Mar-13 470 420 560 290
6-Mar-13 Stormwater advisory 420 410 580 360
27-Feb-13 Stormwater advisory 350 1200 2500 610
20-Feb-13 290 340 250 250
13-Feb-13 310 160 200 160
6-Feb-13 320 560 290 86
30-Jan-13 380 370 340 210
23-Jan-13 320 230 260 110
16-Jan-13 110 250 150 9
9-Jan-13 550 590 210 320
2-Jan-13 130 290 370 86
27-Dec-12 200 240 230 52
19-Dec-12 Stormwater advisory 220 180 310 290
12-Dec-12 170 270 300 63
5-Dec-12 Stormwater advisory 790 680 230 1100
28-Nov-12 Stormwater advisory 260 810 840 420
21-Nov-12 74 260 210 130
14-Nov-12 420 240 200 310
7-Nov-12 420 240 200 310
31-Oct-12 140 230 150 150
24-Oct-12 72 130 110 150
17-Oct-12 340 3400 210 240
10-Oct-12 240 790 170 230
10-Oct-12 240 790 170 230
3-Oct-12 31 110 120 120
26-Sep-12 31 41 110 52
19-Sep-12 74 540 200 98
12-Sep-12 Stormwater advisory 96 97 20 120
5-Sep-12 Stormwater advisory 63 190 74 98
29-Aug-12 74 74 52 120
22-Aug-12 Stormwater advisory 20 20 86 97
15-Aug-12 Stormwater advisory 52 52 74 180
8-Aug-12 30 74 98 86
1-Aug-12 63 74 120 160
25-Jul-12 52 63 85 62
18-Jul-12 <10 63 74 98
11-Jul-12 52 200 74 63
4-Jul-12 31 52 360 540
27-Jun-12 Stormwater advisory 31 97 160 240
20-Jun-12 41 62 120 63
13-Jun-12 10 41 160 120
6-Jun-12 Stormwater advisory 63 400 2100 1400
30-May-12 Stormwater advisory 97 120 230 410
23-May-12 200 220 160 98
16-May-12 160 140 280 420
9-May-12 Stormwater advisory 63 280 230 150
2-May-12 Stormwater advisory 670 450 320 380
24-Apr-12 640 2200 440 620
18-Apr-12 110 120 350 270
11-Apr-12 220 360 880 250
4-Apr-12 170 310 300 230
28-Mar-12 170 190 210 150
21-Mar-12 280 280 280 280
14-Mar-12 310 270 340 270
7-Mar-12 Stormwater advisory 150 130 490 390
29-Feb-12 Stormwater advisory 680 910 750 400
22-Feb-12 200 340 270 110
15-Feb-12 Stormwater advisory 500 550 320 160
8-Feb-12 200 240 230 41
1-Feb-12 360 330 330 200
25-Jan-12 290 250 120 31
18-Jan-12 220 480 300 180
11-Jan-12 320 350 200 310
4-Jan-12 310 280 1700 120
28-Dec-11 240 300 740 1500
21-Dec-11 230 380 450 840
14-Dec-11 220 260 570 580
30-Nov-11 260 430 750 300
23-Nov-11 200 300 330 510
16-Nov-11 600 1100 370 690
16-Nov-11 600 1100 370 690
9-Nov-11 Stormwater advisory 490 2200 9800 9800
2-Nov-11 Stormwater advisory 220 250 330 370
26-Oct-11 210 450 200 460
19-Oct-11 130 250 120 230
12-Oct-11 86 98 300 160
5-Oct-11 63 160 170 350
2-Sep-11 Stormwater advisory 52 250 170 52
21-Sep-11 170 370 1000 260
14-Sep-11 41 98 150 310
07-Sep-11 190 170 160 140
01-Sept-11 120#
31-Aug-11 31 98 63 10000*
24-Aug-11 86 63 86 84
17-Aug-11 41 63 96 97
10-Aug-11 10 52 63 260
03-Aug-11 41 10 98 86
27-Jul-11 20 74 160 410
20-Jul-11 10 52 150 320
13-Jul-11 31 20 52 120
06-Jul-11 20 150 130 160
30-Jun-11 20 10 41 85
23-Jun-11 120 310 2100 3700
15-Jun-11 Stormwater advisory 10 31 63 110
8-Jun-11 1300 2400 580 710
1-Jun-11 52 52 84 130
25-May-11 Stormwater advisory 41 110 530 810
18-May-11 Stormwater advisory 41 86 120 430
11-May-11 700 260 170 270
4-May-11 96 97 190 540
27-Apr-11 52 86 170 250
20-Apr-11 Stormwater advisory 31 74 140 230
13-Apr-11 Stormwater advisory 400 1200 6500 6900
6-Apr-11 74 98 150 240
30-Mar-11 130 200 290 260
23-Mar-11 340 350 350 190
16-Mar-11 150 230 240 170
09-Mar-11 160 360 230 170
02-Mar-11 130 210 160 no sample
23-Feb-11 Stormwater advisory 160 250 160 210
16-Feb-11 Stormwater advisory 270 220 390 230
9-Feb-11 Stormwater advisory 110 410 750 no sample
2-Feb-11 330 330 150 41
27-Jan-11 390 270 240 63
19-Jan-11 Stormwater advisory 120 260 230 350
12-Jan-11 Stormwater advisory 710 2200 5500 3400
5-Jan-11 150 250 110 41

* 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