Ball State University researchers are examining Kentucky’s myriad caves, sinkholes and underground rivers to help landowners, local governments and state agencies betterunderstand how farm waste may affectthe aquifers that supply drinking water and support freshwater ecosystems.

Source:: http://www.wateronline.com/doc/samples-kentucky-cave-stream-show-how-animal-waste-affects-water-supply-0001?atc~c=771+s=773+r=001+l=a