Bathing Water Data : 2023

Portobello (Central)

Sufficient
Portobello (Central)

Number of samples taken : 18
Date Escherichia coli
(cfu/100ml)
Intestinal enterococci
(cfu/100ml)
17 May 2023 10 10
08 Jun 2023 <10 <10
13 Jun 2023 20 <10
19 Jun 2023 30 40
21 Jun 2023 10 <10
28 Jun 2023 270 120
05 Jul 2023 70 30
13 Jul 2023 60 10
19 Jul 2023 30 130
24 Jul 2023 110 20
01 Aug 2023 200 160
03 Aug 2023 570 380
10 Aug 2023 70 190
16 Aug 2023 300 30
24 Aug 2023 10 100
30 Aug 2023 830 170
04 Sep 2023 130 10
12 Sep 2023 210 <10


Historical record

NOTE: There were no classifications calculated for 2020/21 due to the shortened season and reduced sampling during the COVID pandemic.
2017 / 18 Sufficient
2018 / 19 Sufficient
2019 / 20 Sufficient
2020 / 21 See above
2021 / 22 Sufficient
2022 / 23 Good

UKAS: ISO 17025

These Results were produced by a UKAS accredited testing laboratory No. 1327.

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.