Bathing Water Data : 2017

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Number of samples taken : 18
Date Escherichia coli
(cfu/100ml)
Intestinal enterococci
(cfu/100ml)
22 May 2017 30 <10
05 Jun 2017 20 <10
08 Jun 2017 30 20
12 Jun 2017 60 30
19 Jun 2017 10 360
26 Jun 2017 110 <10
28 Jun 2017 80 20
06 Jul 2017 30 2100
The elevated result recorded at Collieston on 6th July was most likely attributable to combined sewer overflow discharges and rural diffuse pollution, caused by rainfall preceding and during sampling.
10 Jul 2017 20 <10
12 Jul 2017 <10 <10
17 Jul 2017 60 230
24 Jul 2017 80 60
31 Jul 2017 20 <10
07 Aug 2017 90 <10
17 Aug 2017 20 30
21 Aug 2017 110 <10
28 Aug 2017 90 10
07 Sep 2017 50 80


Historical record

2015/16
Good
2016/17
Good

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.