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The quantity of water today
is about the same as it has always been! No increases in amount though
the need for clean water has increased due to rapid population growth. There is no such thing as
naturally pure water. As the "universal solvent," water dissolves more
substances than any other liquid. In nature, all water contains some
impurities. As water flows in streams, sits in lakes, and filters through
layers of soil and rock in the ground, it dissolves and/or absorbs many
of the substances with which it comes into contact.
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 Don't pollute! Don't waste! Don't leave faucets running! |
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Surface
water (collected from a river or lake) can become contaminated by industrial
wastes, farm runoff, storm water runoff, acid deposition and human and
animal wastes. Examples
of chronic effects of drinking water contaminants are cancer, liver or
kidney problems, or reproductive difficulties. Today,
the United States has one of the safest water supplies in the world. |
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 watersolvent drink fresh charcoal filter aquarium population river 
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