ID#: 8649
Description: Caption:
This historic 1922 drawing, which had been digitally enhanced, depicted a plan for a small municipal Minnesotan water filtration plant. This sketch showed the sand filter, located in the bottom of the plant, in detail. Other views of this filtration plant can be seen in PHIL_8645, 8646, 8647, and 8648. This was one of a series of instructional images, used by the Minnesota Board of Health, in order to train its state public health workers. The focus of these images was on protecting water supplies from bacterial contamination due to incorrect disposal of waste, such as sewage, which might foul ground water, rivers, lakes, and streams.
High Resolution: Click here for hi-resolution image (13.89 MB)
Content Providers(s): CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date: 1922
Photo Credit:
Links: Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
Categories:
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.