||Preliminary Study Comparative Winter Survival of Fecal Bacteria in Subarctic River.
Van Donsel, Dale J. ;
Gordon, Ronald C. ;
Davenport., Charlotte V. ;
||Environmental Protection Agency, College, Alaska. Arctic Environmental Research Lab.
Stream pollution ;
Temperature measurement ;
Coliform bacteria ;
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A preliminary investigation of Salmonella survival in a subarctic Alaskan river was conducted during March 1973, when there was total ice cover and 0C water temperature. Since most of the domestic pollution entered the river from one source and there were no additional sources downstream, it was possible to examine survival without interruption for seven days flow time. Six Salmonella serotypes were isolated, and salmonellae were still recoverable both quantitatively and qualitatively after seven days flow time in the presence of 330 total coliforms/100 ml and 60 fecal coliforms/100 ml.