Bob believes that because of how much rain there is, the runoff from farms contains animal feces, which gets back to our water supply resulting in contamination. One listener called and disagreed with Bob, imagine that?, saying that animals have been here forever and our water supply is not contaminated by farms. We did find out however that the way giant livestock farms store animal wastes does have profound effects on human health and the environment. 

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Article Courtesy: NRDC

Photo Courtesy: Flickr user SustainableDevelopment