EPA Water Concept Test: assess your knowlege of water concepts (Requires flash)
http://www.epa.gov/safewater/kids/flash/flash_qagame.html
EPA - Water: Office of Wetlands, Oceans & Watersheds Kids Page
http://water.epa.gov/aboutow/owow/kids.cfm
THE WATER CYCLE:
Kidszone
http://www.kidzone.ws/water/
MBGnet
http://www.mbgnet.net/fresh/cycle/
MUOhio
http://www.units.muohio.edu/dragonfly/water/watercycle.shtml
NJAWWA
http://www.njawwa.org/kidsweb/watercycle/watercycle.htm
MAN-MADE WATER CYCLE:
Starring Drip and Drop
http://www.cleanwateratlanta.org/kidscorner/flash/index.asp
USGS - A Visit to a Wastewater Treatment Plant
http://ga.water.usgs.gov/edu/wwvisit.html
USGS - Wastewater Treatment Water Use
http://ga.water.usgs.gov/edu/wuww.html
EPA Virtual Tour of a Drinking Water Plant
http://water.epa.gov/drink/tour/
Blue Plains Advanced Wastewater Treatment Plant
http://www.dcwasa.com/about/virtualtour/index.html
DCWASA Virtual Tour
http://esa21.kennesaw.edu/activities/ww-treatment/ww-tour-dc/blue_plains.swf
WATER QUALITY ASSESSMENT:
Physical, biological, and chemical attributes of a waterway can be important indicators of water quality
Exploring the Environment
http://www.cotf.edu/ete/modules/waterq3/WQassess4.html
Science Junction - Water What-ifs
http://www.ncsu.edu/sciencejunction/depot/experiments/water/index.html