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Screeningsundersøgelse for campylobacter i vand
Summary and conclusions
The aim of this screening project was to investigate the content of Campylobacter in bathing water and in drinking water in order to get more knowledge about Campylobacter in aqueous environments. The
results obtained in this project will be used as a base for a risk assessment of Campylobacter.
153 samples of bathing water have been analyzed. Thermotolerant campylobacter have been isolated from 20,3% of the samples. In 3,3% of the samples levels above 100 campylobacter per1000 ml have
been detected. Another 3,3% of the samples contained levels between 10 and 100 campylobacter per 1000 ml. In 13,7% of the samples the content of Campylobacter was found to be between 1 and 10
campylobacter per 1000 ml.
Statistical relations between content of Campylobacter and the other microbiological factors cannot be documented. The same accounts for the field observations water temperature, wind force, visibility in
water and pH.
It can be concluded that the content, as found in this screening, of Campylobacter in bathing water might pose a risk to bathers due to low infective doses of campylobacter and high content of
campylobacter.
The screening includes 123 samples of drinking water. Sampling was done in individual water supply systems. Campylobacter has been isolated from two samples. One sample contained between 1 and 10 campylobacter per 1000 ml and the other sample contained between 10 and 100 campylobacter per 1000 ml. Both samples were high in coliforme count, in E. coli as well as in total count. Presence of E. coli in drinking water indicates fresh faecal contamination of the drinking water. And subsequently poses a risk for presence of pathogenic bacteria. In this project about 25% of the samples from drinking water contain E. coli and 1,6% contain campylobacter.
Campylobacter is frequently found in bathing water, where as Campylobacter is only sporadic found in drinking water in Denmark.
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Version 1.0 Marts 2006, © Miljøstyrelsen.
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