More on water pollution from Infoplease:

• America's Troubled Waters - America's Troubled Waters Source: U.S. PIRG, Troubled Waters: An Analysis of Clean Water Act ...
• water pollution: Dangers of Water Pollution - Dangers of Water Pollution Virtually all water pollutants are hazardous to humans as well as lesser ...
• Drinking Water and Sanitation Around the World - Drinking Water and Sanitation Around the World About 42% of the world's population, or 2.6 ...
• water pollution: Other Sources of Water Pollution - Other Sources of Water Pollution Towns and municipalities are also major sources of water ...
• water pollution: Legislation and Control - Legislation and Control The United States has enacted extensive federal legislation to fight water ...

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