Environmental Chemistry - Water Pollution | 11th Chemistry : UNIT 15 : Environmental Chemistry
Chapter: 11th Chemistry : UNIT 15 : Environmental Chemistry
Water Pollution
Water
Pollution
Water
is essential for life. Without water life would have been impossible. The slogan,
‘Save Water, Water will save you’ tell us the importance of water. Such slogans
tell us to save water. Apart from saving water, maintaining its quality is also
equally important.
Now
a days water is getting polluted due to human activities and the availability
of potable water in nature is becoming rare day by day.Water pollution is
defined as“The addition of foreign substances or factors like heat which degrades the quality of
water, so that it becomes health hazard or unfit to use.”
The
water pollutants originate from both natural and human activities. The source
of water pollution is classified as Point and Non-point source.
Easily
identified source of place of pollution is called as point source. Example: municipal
and industrial discharge pipes.
Non-
point source cannot be identified easily, example: agricultural runoff, mining
wastes, acid rain, and storm-water drainage and construction sediments.
Table 15.2: List of major water pollutants and their sources.
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