wordtruth.org |
75% of the
Earth’s surface is covered with water, yet only about 1% is readily available
for human consumption. Water pollution affects the environment just as much as
air and land pollution, affecting ocean life as well as human life. Ocean life
is more obviously affected because of the dirty, unhealthy water serving as
natural habitats for marine plants and animals. Human life is affected too
however, because of the lack of water resources available to the people of
developing countries. Only a fraction of our planet’s citizens have access to
clean water; people may have access to water, but it is not clean water.
whitegadget.com |
The two
sources of water pollution are called point
source and nonpoint source. Point
source pollution refers to the pollution that has been introduced in a specific
location into the water. This type of pollution is found through septic systems,
landfills in certain situations, gas and petroleum products, chemical compounds
used to dissolve grease and oil in water, pesticides, and lead. In addition,
nearly 500 million pounds of polychlorinated biphenyls were dumped into the
ocean before the United States banned the practice. Most of the point source
pollution comes from factories, yet still a large portion is coming from
individual human action. As waste receptacles are less available, more citizens
are choosing to dump their waste into the oceans and nearby lakes, rivers, and
ponds.
Nonpoint
source pollution primarily results from runoffs affected by pollution. One of
the ways this happens is through the treatment of soil with chemical
pesticides. Instead of dumping pesticides straight into the water, nonpoint
pollution of pesticides occurs by the seepage of treated soil into the water
below the surface, or into runoffs. Another nonpoint source of water pollution
is through air pollution. Airborne pollution can travel far distances from its
source, and often particles of pollution will find their way into water
sources.
Water pollution is a serious threat to the health of our
ocean life. Find out more at:
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