Bathing Water Data : 2021

Portobello (West)

Sufficient
Portobello (West)

Number of samples taken : 15
Date Escherichia coli
(cfu/100ml)
Intestinal enterococci
(cfu/100ml)
17 May 2021 40 <10
02 Jun 2021 80 10
07 Jun 2021 50 10
15 Jun 2021 20 10
28 Jun 2021 30 20
05 Jul 2021 2800 2800
13 Jul 2021 20 10
19 Jul 2021 <10 <10
26 Jul 2021 760 490
02 Aug 2021 110 30
09 Aug 2021 230 80
16 Aug 2021 280 90
23 Aug 2021 540 260
31 Aug 2021 10 <10
06 Sep 2021 570 690


Historical record

2015/16
Poor
2016/17
Poor
2017/18
Poor
2018/19
Sufficient
2019/20
Sufficient

Results explained

The annual bathing water classification is determined using statistics calculated from results taken over the previous four years. The water quality indicators we test for are the bacteria E Coli (EC) and intestinal enterococci (IE). The statistics take account of both the average value and the range of values in the four year dataset.

Single sample results above 500 EC and 200 IE are indicative that water was of low quality when the sample was taken. For inland waters the low quality boundaries are higher at 1000 EC and 400 IE.