
Animal Pens and Well Water Contamination
Hypothesis
Science Concepts Learned
Groundwater contamination happens when harmful substances travel through soil into underground water supplies. In this experiment, fecal bacteria like E. coli from livestock pens seeped through the ground and reached nearby drinking water wells. Wells closer to animal pens tested positive for coliforms, while wells farther away showed no contamination.
Coliform bacteria are germs found in animal waste that signal dirty water. When wells sit near livestock pens, fecal bacteria like E. coli can travel through soil and reach groundwater — sometimes moving surprisingly far from the source. In this experiment, wells near animal pens tested positive for coliforms, while wells farther away showed no contamination at all.
Method & Materials
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