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The toxification of the Hudson River has had a dramatic impact on the health of the river's ecosystem as well as the ability of people living along the river to use and enjoy it. With increasing human population in the last one hundred years, the Hudson has endured high levels of raw sewage, loading of nutrients, and the accumulation of pollutants such as PCBs. In this module, students learn the changes that have taken place in the Hudson River due to two important pollutants, sewage and PCB's.

A: An Introduction to Water Quality

• Lesson A1- Water Quality Introduction


• Lesson A2- Is Our Water Healthy?


• Lesson A3- Importance of Soils


• Lesson A4- Permeability of Soils


• Lesson A5- School Water Budget


• Lesson A6- Land Use & Water Quality


• Lesson A7- Bottled vs. Tap Water

B: Salt Pollution and Streams

• Lesson B1- How Much Salt?


• Lesson B2- Why Is It So Salty?

B: Wastewater and the Hudson River

• Lesson C1- Can You Swim in the Hudson?


• Lesson C2- Historic Water Pollution


• Lesson C3- Eutrophication & Biomanipulation


• Lesson C4- The Hudson and Eutrophication