Water pollution

WATER POLLUTION

What is water pollution?

Well Pollution is the

contamination of the natural environment with harmful substances often as a consequence of human activities.

There are many differents types of pollution as:

• Water pollution• Air pollution• Land contamination

How does water pollution occur?

Water pollution occurs when a lot of chemicals, sewage and fertilizers are dropped and if it is not treated before being discharged

into waterways, serious pollution is the result.

Types of water pollution Microbiological ChemicalOxygen-depleting Substances NutrientsOil pollution

Microbiological •Microbiological pollution is the natural form of

water pollution that is caused by microorganisms in uncured water.

•Most of these organisms are harmless but some bacteria, viruses, and protozoa can cause serious diseases such as cholera and typhoid.

•This is a significant problem for people in third world countries who have no clean drinking water and/or facilities to cure the water.

Oxygen-depletion pollution

•Many wastes are biodegradable, that is, they can be broken down and used as food by microorganisms like bacteria.

Nutrients pollution•  • Nutrients are usually found in

wastewater and fertilizers. • These can cause excess vegetation in the water such as algae and weeds, using up the oxygen in the water and hurting the surrounding marine life and other organisms in the water.

Chemical pollution •Metals and solvents flow out of factories and into the

water, polluting the water and harming the wildlife. • Pesticides from farms are like poison to the wildlife in

the water and kill and endanger the aquatic life. •If birds or humans eat these infected fish the toxins are

transferred to us and we swallow these dangerous pesticides and toxins, affecting our health.

CAUSES Domestic households,

industrial and agricultural practices produce wastewater that can cause pollution of many lakes and rivers.

Dumping of litter in the sea can cause huge problems in marine animals and may result in death .

Nuclear waste is produced from industrial, medical and scientific processes that use radioactive material. Nuclear waste can have detrimental effects on marine habitats

Effects of water pollution

dead animals •Dead plants •harms the ecosystems •heat waves •Also climate change/global warming •droughts •more bugs •more diseases

Effects of water pollution

• •asthma • •heavy breathing • •cancer • •acid rain • •Each year about 250,000 people are

admitted to hospitals or emergency rooms with pesticide poisoning

What can we do to prevent water pollution?

• Be careful about what

you throw down your sink or toilet.

• Use environmentally household products, such as washing powder, household cleaning agents and toiletries.

• Don't throw litter into rivers, lakes or oceans.

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