This historic diagram, which had been digitally enhanced and colorized, depicted a cross-sectional representation of an improperly constructed 'flowing' well that was being used as a farm's potable water supply.Note that the privy and the barn have both been built uphill from the well. This increased the chances for contamination from liquid waste traveling downhill from these structures. The water supply is also accessible to animals, which also increased the chances of contamination. By dipping a receptacle into the well in order to retrieve water, the farmer is also contributing to the chances that the water supply could become contaminated.
CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
November 20, 2012
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