Secrets of Limestone Groundwater

Duration: 14

Year Published: 1980

Creator: Inside Earth Films

Format: 16mm

Color: Color

Description: 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.