Issue 20 and Volume 62.

FALLACIES IN INVESTIGATION OF WATER SUPPLIES For many years laboratory workers have teen developing analytical methods for the detection of pollution in water, and these investigations have resulted in the establishment of standard methods for this purpose. It is a well-known fact that these methods, when properly applied, form an important part of a routine water supply investigation. It is also recognized that a thorough field survey is absolutely essential before a reliable opinion can be offered regarding the safety of a supply for drinking purposes. Unfortunately certain health departments have been depending largely on an analysis of the water, without obtaining first-hand information regarding the environmental, structural and operative features of the water supply. A common practice is to leave the field work to untrained individuals in the local communities. Data sheets and sampling equipment are often furnished to local authorities and private citizens, who collect the field data…

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