Abstract
The contamination by Coli-form group or stool is tremendous in the Japanese way of life at present, as seen in the reports of the studies on drinking water.
But, actually the real state is not known yet, though there are not a few researchers who take up the subject about the inconvenience between a toilet and a kitchen in a Japanese-style house.
In this connection, the author made an observation at a village in Tohoku district on the contamination by stool at farmers' houses where both a well and a toilet ware provided.
The result was, in short, that the contamination at kitchens in rural districts was terrible. It was, however, the accumulated state of contamination during a long time, and it was found that contamination came not only from a toilet but also from some where else. That is, there seem to be many cases in which it comes through one or two other contaminations not directly from a toilet. To prevent the contamination by a toilet, disinfectant was given to employ, instead of water, for hand-washing, but the trial was unsuccessful in a complete prevention, perhaps because they were not accustomed to use it.
