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Water is used by our bodies to help control body temperature and sustain other bodily functions. It is found in all cells, organs, and tissues.
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Water
Since our body loses water by breathing, sweating, and digestion, it is important to drink fluids and eat foods that contain water to rehydrate and replace it.
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Example:
Let us now see the process of water purification.
![Water filtration.png](https://resources.cdn.yaclass.in/9decf41b-c097-4685-be5c-ae84a223653e/Waterfiltrationw523.png)
Drinking water supply system in town/city
Unwanted chemical compounds, organic and inorganic products, and biological pollutants are separated from water during this purificationprocess.
Stage 2: The collected water is then passed to the sedimentation tank, where the solids settle down.
Stage 3: In this loading tank, the suspended impurities settle down as sediments.
Stage 4: The filtration tank contains gravel, coarse sand, and fine sand. The water from the loading tank enters the filtration tank, where the sedimentation takes place.
![shutterstock_370747247.jpg](https://resources.cdn.yaclass.in/8af9d407-9c0e-452b-aa9f-f9bdebdec411/shutterstock370747247w300.jpg)
Simple filtration process
The sedimentation process is a physical treatment where the impurities settle down. This is according to gravity. This filtration tank acts as a simple bio-sand water filter. This filters most of the contaminants present in the water.
Stage 5: The water from the previous tank enters this chlorination tank, where the microbes are killed. This is germ-free water that is now safe to drink. Finally, the treated water is supplied for consumption in cities.