Fact 12 of 12
While conducting research in India in 2005, English microbiologist Rob Reed observed villagers storing water in brass vessels. When he asked them why they used brass, the villagers said it protected them against waterborne illnesses such as diarrhea and dysentery. Reed tested their theory under laboratory conditions by introducing E. coli bacteria to water in brass pitchers. Within 48 hours, the amount of living bacteria in the water had been reduced to undetectable levels.