Students and their teachers monitor water quality in their local streams or river twice annually, once in October and once in March. They use titration kits to test for dissolved oxygen, pH, and turbidity. Students measure both the air and water temperature and many test for nitrates.
Most classes collect sterile samples for bacterial analysis. Students at local high school filter these samples, incubate them and count the fecal coliform colonies after 24 hours. These water quality parameters are important for aquantic organisms and/or have implications for human health.