ID#: 8636
This historic 1919 diagram, which had been digitally enhanced, depicted a plan for providing a water supply intended for the purpose of fire protection. The diagram outlined a method for eliminating cross-contamination between the pure water of the city water main, and polluted river water. As one of a series of instructional drawings, this image was used by the Minnesota Board of Health to train its state public health workers. The focus of these images was on protecting potable water supplies from bacterial contamination, due to incorrect disposal of waste, including sewage that might foul ground water, lakes, rivers, and streams.
High Resolution: Click here for hi-resolution image (22.79 MB)
Content Provider(s): CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date: 1919
Photo Credit:
Links: Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
CDC Organization
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.