DETECTION OF AEROMONADS OF HYDROPHILA-PUNCTATA-GROUP WITHIN HYGIENIC CONTROL OF DRINKING-WATER

  • 1 January 1976
    • journal article
    • research article
    • Vol. 161  (5-6) , 482-497
Abstract
A retrospective analysis was done of bacteriological water examinations of single wells within which E. coli, coliform and colony count determinations were performed in a 1 yr examination period, and the water samples were examined for Aeromonas of the hydrophila-punctate-group [A. hydrophila, A. punctata]. The single wells were divided into 5 groups because of pre-testing and reexamination results and because of the local circumstances. The relation of aerogenic to anaerogenic aeromonads in wells close to the shore in the direction of infiltration was examined. Flat wells without influence of surface water in groundwater areas with relatively porous surface layer were studied. While in river water loaded with sewage the anaerogenic aeromonads dominate the population up to about 80%, their proportion diminishes in the shore filtrate so that within a certain distance, in groundwater filtered through the shore, only aerogenic aeromonads are found. From water of flat wells with relatively porous surface layer exclusively aerogenic aeromonads colonies were isolated. Because the aerogenic aeromonads were not found in deep wells but were found more or less frequently in flat wells the proof of anaerogenic Aeromonas demonstrates surface water sewage pollution.

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