WATER POLLUTION Causes, effects, prevention

What is water pollution?

  • Water pollution is the contamination of water bodies ( e.g. lakes, rivers, oceans, aquifers and ground water). Very often by human activities.
  • Water pollution occurs 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 factors.
  • Water pollution is the second most imperative environmental concern along with air pollution.
Types of water pollution
  • Nutrients pollution
  • Surface water pollution
  • Oxygen depleting
  • Ground water pollution
  • Microbiological
  • Suspended matter
  • Chemical water pollution
  • Oil spillage

Causes of water pollution

  • Sewage from domestic households, factories and commercial buildings. Sewage that is treated in water treatment plants is often disposed into the sea. It can be more problematic when people flush chemicals and pharmaceutical substances down the toilet.
  • Dumping solid wastes and littering in rivers, lakes and oceans, including aluminum, plastic and glass.
  • Industrial waste from factories, which use freshwater to carry waste from the plant into rivers, contaminates waters with pollutants such as mercury and petrochemicals.
  • Oil Pollution caused by oil spills from tankers and oil from ship travel. Oil does not dissolve in water and forms a thick sludge.
Effects of water pollution
  • Human health: in countries that have poor purification practices, people often get water-borne disease outbreaks such as cholera and tuberculosis.
  • Death of animals: animals, including water animals die when water is poisoned for various reasons.
  • Destruction of ecosystems: ecosystems 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.
Effects of water pollution
How to prevent water pollutiom
  • Sewage treatments: The household water should be treated properly so that they become environmentally safe.
  • Prevent river water to get polluted: The flowing water of the river cannot be cleaned easily by natural process.
  • Treatment of wastes before discharge: Factories are expected to treat its effluent wastes prior to discharge.
  • Routine cleaning: Ponds, lakes and wells meant for human use should be routinely cleaned and treated, so that it remains fit for human use.
  • Don’t pour insecticides in sinks and toilets
  • Treatment of drainage water
Interesting facts about water pollution
  1. At least 320 million people in China do not have access to clean drinking water.
  2. 15 million children under the age of five die each year because of diseases caused by drinking water.
  3. In America, 40% of the rivers and 46% of the lakes are polluted and are considered unhealthy for swimming, fishing or aquatic life.
  4. Plastic waste being a major water pollutant, is causing huge destruction of marine life and is believed to be responsible for deaths of more than 100,000 sea animals.
  5. Lack of safe drinking water and sanitation in cities leads to cholera and malaria.
  6. Asia has maximum numbers of polluted rivers than anywhere else in the world. Most of it contains bacteria created from human waste.
  7. Every year, more people die from unsafe water than from all forms of violence, including war.

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.