What is water pullution and What are the causes




WHAT IS WATER POLLUTION

The World Health Organisation (WHO) says that polluted water is water whose composition has been changed to the extent that it is unusable. In other words, it is toxic water that cannot be drunk or used for essential purposes like agriculture, and which also causes diseases like diarrhoea, cholera, dysentery, typhoid and poliomyelitis that kill more than 500,000 people worldwide every year.

The main water pollutants include bacteria, viruses, parasites, fertilisers, pesticides, pharmaceutical products, nitrates, phosphates, plastics, faecal waste and even radioactive substances. These substances do not always change the colour of the water, meaning that they are often invisible pollutants. That's why small amounts of water and aquatic organisms are tested to determine water quality.

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Water poluttion

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  The planet keeps nudging us with increasingly extreme droughts, reminding us that water is life. It is an essential resource upon which all living beings depend and it is crucial to all social and economic development, as well as energy production and adaptation to climate change. Nevertheless, we are now facing a gigantic challenge. How do we stop contaminating our rivers, seas, oceans, canals, lakes and reservoirs?
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MAIN CAUSES OF WATER POLLUTION

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  MAIN CAUSES OF WATER POLLUTION It is sometimes caused by nature, such as when mercury filters from the Earth's crust, polluting oceans, rivers, lakes, canals and reservoirs. However,  the most common cause of poor quality water is human activity  and its consequences, which we will now go on to explain:   Globa l warming Rising global temperatures  caused by CO 2  emissions heat the water,  reducing its oxygen content.   Deforestation Felling forests can  exhaust water resources  and generate organic residue which becomes a breeding ground for harmful bacteria.   Industry, agriculture and livestock farming Chemical dumping from these sectors is one of the main causes of  eutrophication of water.   Rubbish and faecal water dumping The UN says that more than  80% of the world's sewage  finds its way into seas and rivers untreated.   Maritime traffic Much of the plastic...
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