This educational propaganda short instructed the Latin America audience on how to prevent contamination of the water supply. Steps were shown on how to construct well housings to prevent seepage of tainted water into the deep wells. To show the path of the germs, the pure blue water turned red as it was contaminated, and this red was, in turn, transmitted to the well bucket, the rope, and then to the hands and bodies of the natives. To show how to kill these germs, a closeup of a teakettle revealed a red skull, which dissolved away as the water boiled.