Environmental Pollution

Water Pollution

By: Joshua Baptiste

What is Water Pollution?

Environmental; Pollution.- Water

Definition of Water Pollution Water pollution is the contamination of water bodies (e.g. lakes,

rivers, oceans, aquifers and groundwater), very often by human

activities. Water pollution occur when pollutants (particles,

chemicals or substances that make water contaminated) are

discharged directly or indirectly into water bodies without enough

treatment to get rid of harmful compounds. Pollutants get into

water mainly by human causes or human factors.

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Types of Water Pollution There are three direct types of water pollution with sub-

pollutions under each:

Physical- solid waste, garbage, plastics

Chemicals- chemicals such as fertilizers, oils, sewage

Biologicals- infectious disease, oxygen-demading waste

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Causes and Effects of Physical Water Pollution

This is the most visible form of pollution and we can see it

floating on our waters in lakes, streams, and oceans. Trash

from human consumption, such as water bottles, plastics and

other waste products, is most often evident on water surfaces.

This type of pollution gravely endangers sea wildlife.

Causes and Effects of Chemical Water Pollution

Due to mass production in industrial plants and farms, there is a lot of

chemical run-off that flows into the nearby rivers and water sources.

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.

Causes and Effects of Biological Water Pollution

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.

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Other Types of Water Pollution Oil Spillage

Oil spills usually have only a localized effect on wildlife but can spread for miles. The oil can cause the death to many fish and get stuck to the feathers of seabirds causing them to lose their ability to fly. Nutrients Pollution

Some wastewater, fertilizers and sewage contain high levels of nutrients. If they end up in water bodies, they encourage algae and weed growth in the water. This will make the water undrinkable, and even clog filters. Too much algae will also use up all the oxygen in the water, and other water organisms in the water will die out of oxygen starvation.

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Other Causes and Effects of Water Pollution

Disruption of food-chains

Pollution disrupts the natural food chain as well.

Pollutants such as lead and cadmium are eaten by tiny

animals. Later, these animals are consumed by fish and

shellfish, and the food chain continues to be disrupted at

all higher levels.

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Other Causes and Effects of Water Pollution cont. Destruction of ecosystems

Ecosystems (the interaction of living things in a place, depending on each other for life) can

be severely changed or destroyed by water pollution. Many areas are now being affected by

careless human pollution, and this pollution is coming back to hurt humans in many ways.

Underground storage and tube leakages

Many liquid products (petroleum products) are stored in metal and steel tubes underground.

Other sewage systems run in underground tubes. Over time, they rust and begin to leak. If

that happens, they contaminate the soils, and the liquids in them end up in many nearby

water bodies.

Video Recap

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Questions ?

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Thank You