Bathing Water Data : 2019

Portobello (West)

Sufficient
Portobello (West)
.

Number of samples taken : 13
Date Escherichia coli
(cfu/100ml)
Intestinal enterococci
(cfu/100ml)
22 May 2019 270 60
05 Jun 2019 2900 1600
Heavy rainfall resulted in bacteria being flushed into the bathing water. Poor water quality was forecast to beach users
13 Jun 2019 6200 1700
Heavy rainfall resulted in bacteria being flushed into the bathing water. Poor water quality was forecast.
18 Jun 2019 <10 <10
20 Jun 2019 40 <10
26 Jun 2019 <10 <10
04 Jul 2019 80 <10
09 Jul 2019 90 <10
17 Jul 2019 50 <10
22 Jul 2019 240 50
25 Jul 2019 50 <10
31 Jul 2019 180 160
07 Aug 2019 30 <10


Historical record

2015/16
Poor
2016/17
Poor
2017/18
Poor

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.