Brian Skaife, a chemist/biologist at the Janesville Wastewater Treatment Plant, demonstrates how a sample of drinking water would be tested for E.Coli. A controlled comparison liquid (left) is compared to a drinking water sample, collected from all over the city. If the sample appears fluorescent like the controlled comparative bottle, then the test is positive for E. Coli. In this example, the sample is negative. » Order a reprint of this photo
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