Pollution and its Management
Pollution is the introduction of contaminants into the natural environment that cause adverse effect. Pollution can
take the form of chemical substances or energy, such as noise, heat or light. Pollutants are the components of pollution, can
be either foreign substances/energies or naturally occurring contaminants. Pollution is often called as point source or
nonpoint source pollution. A pollutant is a waste material that pollutes air, water or soil. Three factors determine the severity
of a pollutant: its chemical nature, the concentration and the persistence and controlling those materials in constructive way.
The burning of coal and wood, and the presence of many horses in concentrated areas made the cities the cesspools of
pollution. The Industrial Revolution brought an infusion of untreated chemicals and wastes into local streams that served as
the water supply. Those days King Edward I of England banned the burning of sea-coal by proclamation in London in 1272,
when its smoke became a problem. Thus Air pollution has always accompanied civilizations.