If you thought you were a major contributor to pollution, just wait until you hear this. Factory farms produce 100 times more waste than every single person in the United States combined. The amount of waste produced by these factories is in such mass quantities that it is virtually impossible to clean up properly. Much of this waste is dumped into the water supply, drastically increasing overall water pollution as well as contributing to the pollution found in drinking water.
Back in 2008 the Environmental Protection Agency (EPA) made a decision that affected many factory farms. They stated that any confined animal feeding operation (CAFO), also known as factory farms, “designed, constructed, operated, and maintained in a manner such that the CAFO will discharge” animal waste must apply for a National Pollutant Discharge Elimination System (NPDES) permit under the Clean Water Act. The livestock industry ridiculed this notion.
There have been past rulings concerning this issue that forced farmers to have a permit to discharge waste and to have a set plan as to how the waste would be discharged, or they would face civil or criminal penalties. The 2008 ruling went further with the issue, putting even more criteria in place to follow.
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http://naturalsociety.com/factory-farms-produce-100-times-waste-us-population/