The Water Project -Experiments and activities to show how the water cycle helps to purify water. Evaporation and Condensation are explored as processes for water purification. This site also provides useful resources for exploring water issues.
he Water Sourcebooks contain 324 activities for grades K-12 divided into four sections: K-2, 3-5, 5-8, and 9-12. Each section is divided into five chapters: Introduction to Water, Drinking Water and Wastewater Treatment, Surface Water Resources, Ground Water Resources, and Wetlands and Coastal Waters.