Bathing Water Data : 2016

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Number of samples taken : 18
Date Escherichia coli
(cfu/100ml)
Intestinal enterococci
(cfu/100ml)
18 May 2016 30 10
01 Jun 2016 <10 <10
08 Jun 2016 <10 <10
16 Jun 2016 210 150
21 Jun 2016 60 40
23 Jun 2016 130 400
27 Jun 2016 30 40
05 Jul 2016 20 10
07 Jul 2016 460 350
11 Jul 2016 70 50
20 Jul 2016 270 180
25 Jul 2016 440 290
03 Aug 2016 190 90
08 Aug 2016 3600 460
The elevated result at Nairn (East) is likely to be due to heavy rain and stormy weather conditions preceding sampling. SEPA staff observed that strong westerly winds were pushing the flow from the River Nairn directly over the sampling site at Nairn (East). This combined with the high bacterial counts seen in the River Nairn samples and sediment disturbance at the sampling site are thought to have caused the elevated localised bacterial counts. Joint, pre-planned, SEPA and Scottish Water inspections of the Nairn sewage network on 8 August 2016 confirmed that there were no discharges from the storm overflows at that time. Further investigations by SEPA staff found no other on-going issues or pollution incidents in the area at this time that would have influenced bathing water quality.

17 Aug 2016 160 110
22 Aug 2016 350 190
31 Aug 2016 20 20
06 Sep 2016 60 50


Historical record

2015/16
Poor
2016/17
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.