Secrets of Limestone Groundwater

Shows how groundwater from springs, wells, and underground rivers in limestone regions may well be polluted for all its apparent beauty and appeal. Uses animation and live-action scenes to illustrate how rainwater runoff from septic systems, sanitary landfills, barnyard waste, and garbage dumped in sink holes can seep down into a network of underground fissures to pollute the water table. Explains that the resultant threat to the human water supply posed by waste chemicals and bacteria is more severe in a limestone area because pollutants are not filtered out or naturally oxidized as they are in sandy soil. Ends with an appeal for constructive discussion among all concerned.