Water Science for Schools (USGS)
Offers information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge. http://ga.water.usgs.gov/edu/
Safe Water for Kids
Designed as a tool for teachers, educators and water company operators to use so that they may more clearly show the balance between our activities and the environment. http://www.ecn.purdue.edu/SafeWater/kids/index.htm
Kidzone: The Water Cycle
Features explanations, fun facts, and printable activity pages. http://www.kidzone.ws/water/
Get Wise!
These classroom activities and printable worksheets are designed as a resource for teachers to help students learn ways to conserve water and energy. http://www.getwise.org/lounge.html