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The sanitary significance of coliform bacilli in soil

Published online by Cambridge University Press:  15 May 2009

J. S. Randall
J. S. Randall
Affiliation:
Public Health Laboratory, Cardiff
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Coliforms were readily obtained from many soils. In samples taken from sites exposed to animal contamination Bact. coli type I occurred predominantly. A large number of samples taken from grassy banks, only remotely exposed to contamination, were found to contain intermediates. It was found that the greater the probable degree of contamination of the soil the higher was the proportion of Bact. coli type I, and that the less the probable degree of contamination the higher was the proportion of intermediates. It is difficult to explain this merely on the basis of the prolonged survival of intermediates in soil, and it would appear obvious that the source of these intermediates lay elsewhere than in animal faeces. The numbers in which they were found in soil, however, were not of the order expected of bacteria living in their natural environment, and consequently it was equally difficult to conclude that these intermediates were actively established in soil.

Type
Research Article
Information
Journal of Hygiene , Volume 54 , Issue 3 , September 1956 , pp. 365 - 377
Copyright
Copyright © Cambridge University Press 1956

References

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