Pbh101- Water Pollution & Gloabal Warming

Water Pollution

Water pollution is any chemical, physical or biological change in the quality of water that has a harmful effect on any living thing that drinks or uses it. When humans drink polluted water it often has serious effects on their health. Water pollution can also make water unsuited for the desired use. When toxic substances enter lakes, streams, rivers, oceans, and other water bodies, they get dissolved or lie suspended in water or get deposited on the bed. This results in the pollution of water whereby the quality of the water deteriorates, affecting aquatic ecosystems. Pollutants can also seep down and affect the groundwater deposits. Water covers over 70% of the Earth’s surface and is a very important resource for people and the environment. Water pollution is one of the major problem which affects drinking water, rivers, lakes and oceans all over the world. This consequently harms human health and the natural environment. Water pollution is the second most imperative environmental concern next to air pollution.

Sources of Water Pollution

Water pollution has many sources. The most polluting of them are the city sewage and industrial waste discharged into the rivers and oceans. Pollutants enter groundwater, rivers, and other water bodies. Such water, which ultimately ends up in our households, is often highly contaminated and carries disease-causing microbes. Agricultural run-off, or the water from the fields that drains into rivers, is another major water pollutant as it contains fertilizers and pesticides. Now let’s discuss some of the major sources of water pollution. here are many specific causes of water pollution, but before we list the toppers, it's important to understand two broad categories of water pollution:

“Point source” — occurs when harmful substances are emitted directly into a body of water.

“Nonpoint source” — delivers pollutants indirectly through transport or environmental change.

An example of a point source of...