Water Quality Theme Page
This site provides an extensive list of links to useful material including lesson plans, activities, and water facts for elementary and junior high students.
http://www.cln.org/themes/water.html

Water Science for Schools
The U.S. Geological Survey offers a wide range of water science information about water and its uses, its special characteristics and its availability on earth. Included with this information are activities, questions and answers, pictures, maps, data tables and links to further resources.
http://ga.water.usgs.gov/edu/

Water What-ifs
This site provides numerous lesson plans which associate water quality with macroinvertebrates. It also includes instructions for conducting your own water quality test.
http://www.ncsu.edu/sciencejunction/depot/experiments/water/lessons/macro/

Water Quality for Teachers
This site and the links it provides are just for the teacher. If you would like to expand your knowledge on water quality this page can help.
http://outreach.missouri.edu/wqfocus/teachers.htm