about water pollution causes,effeects

1. water pollution

2. It can be defined as the any desirable change
in the physical,chemical or biological
characteristics of an component of the
environment which can cause harmful effects
on various forms of life or property.

3.  Water pollution
 Air pollution
 Noise pollution
 Marine pollution
 Thermal pollution
 Soil pollution

5. What is meant by water pollution
Ground water pollution
Surface water polluiton
Effects of water pollution
Measures to control water pollution

7.  It has been suggested that water pollution is
the leading worldwide cause of deaths and
diseases, and that it accounts for the deaths of
more than 14,000 people daily.
 An estimated 580 people in India die of water
pollution. About 90 percent of the water in the
cities of China is polluted.
The WHO(world health organisation) estimates
that 3.4 million people die each year due to
waterborne diseases.

8.  Water has the property to dissolve many substances in
it, therfore it can easily get polluted.
 Pollution of water can be caused by point sources or
non-point sources.
 Point sources are specific sites which directly
discharge effluents into them.
 Industries, powerplants are the major point sources.
 The discharge from non point sources is not at any
particular site.
 Overflowing smalldrains, rainwater sweeping roads
and fields etc are the non point sources.

12.  Groudwater forms about 6.2% of the total water available
on planet earth.
 It is 30 times more than surface water.
 Septic tanks, industries, deepwellinjection, mining etc.
are mainly responsible for groundwater pollution.
 Ground water pollution with arsenic, flouride and nitrate
possess health hazards.

14.  The major sources of surface water pollution are:
 Sewage: emptying the drains and sewers in fresh water
bodies causes water pollution.
 Industrial effluents:toxic chemicals,acids,radioactive
substances.
 Synthetic detergents: Detergents used in washing and
cleaning produce foam and pollute water.
 Agrochemicals: fertilizers and pesticides washed by
rainwater and surface run-off pollute water.
 OIL: oil spillage into sea water.
 Waste heat: waste heat from industries increases the
temperature of water bodies.

15.  Fourteen billion pounds of garbage, which is mostly
plastic, is dumped into the ocean every year.
 The Ganges River in India is one the most polluted rivers
in the world with sewage, trash, food, and animal
remains
 About 700 million people globally drink contaminated
water.
 The massive oil spill that was caused by British Petroleum
(BP) in the year 2010 caused over 1,000 animals to die.
Many of them were on the endangered species list.
 At least 320 million people in China do not have access to
clean drinking water.

20.  Many wastewater contain pathogenic and many viruses.
Water borne diseases like cholera, dysentry, typhoid,
jaundice etc. are spread by water contaminated with
sewage.
 Mercury poisioning causes MINAMATA disease in man.
 Nitrate present excess in drinking water causes BLUE
BABY SYNDROME.
 Excess of flouride in drinking water causes defects in
teeth and bones, this disease is called FLUOROSIS.
 Pollution by another heavy metal cadmium had caused
the disease called ITAI-ITAI in the people of japan.

23. Inside the home
 Conserve water whenever possible.
 Do not deposit any harmful chemicals or medications
down the drain.
 Use environmentally-friendly household cleaning products
and personal products.
 Recycle and dispose household waste properly.
 Support organic farmers by purchasing organic food and
other products, since these farms are against using
pesticides, herbicides and fertilizers.
 Properly dispose toxic products such as; paint, oil and
other hazardous materials.
 Install water filters to help clean the water in your home.

24. Outside The Home
 Enforce and obey anti-litter bylaws.
 Report misuse and participate in anti-litter campaigns.
 Refrain from using fertilizers or pesticides on lawns or
gardens.
 Preserve our forest, which are natural water purifiers, by
reducing paper use and by supporting reforestation.
 Don't deposit any waste or litter in any water system.
 Use storm bins to save rain water for future watering of
gardens and lawns.
 Maintain vehicles to prevent oil leaks.