Water+pollution

This site has very, very good information http://www.umich.edu/~gs265/society/waterpollution.htm

This site has good information and a lot of it http://www.lenntech.com/water-pollution-faq.htm This site tells about how pollution can effect people. If people drink polluted water, they can have serious effects. Viruses and bacteria can get in the water. Water pollution causes fish to die, even some people can die from drinking it. Water can also be polluted by plastics, oil and other things like that. Water pollution usually comes from us humans. We detect water pollution by taking a small sample of the water and test it in labs. They also use computer models to determine what dangers there can be in certain waters. Eutrophication is mainly caused by an increase in nitrate and phosphate levels and has a negative influence on water life. This is because, due to the enrichment, water plants such as algae will grow extensively. As a result the water will absorb less light and certain aerobic bacteria will become more active. This makes it hard for organisms to live in the water. Water still sometimes smell like rotten eggs because bacteria make gases during their activities.

This has a lot of good information http://weblogs.baltimoresun.com/features/green/2009/11/invisible_potomac_pollution_a.html