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Results : Portobello (Central)

Sample results

Date Escherichia coli (cfu/100ml) Intestinal enterococci (cfu/100ml)
15 May 2024 120 <10
05 June 2024 60 60
11 June 2024 60 <10
17 June 2024 20 50
19 June 2024 70 40
26 June 2024 10 70
03 July 2024 1200 720
11 July 2024 90 30
18 July 2024 60 10
22 July 2024 20 20
30 July 2024 30 20
01 August 2024 30 30
08 August 2024 340 <10
14 August 2024 <10 40
21 August 2024 120 40
28 August 2024 20 10
02 September 2024 2600 400
10 September 2024 40 20

Historic results

Please note: There were no classifications calculated for 2020/21 due to the shortened season and reduced sampling during the COVID pandemic.

Year Classification
2017 Sufficient
2018 Sufficient
2019 Sufficient
2020 See above
2021 Sufficient
2022 Good
2023 Sufficient
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.