Chlorine is water is harmful to your health and it has been found that bladder, rectal and breast cancer could be there if a person consumes too much of chlorine through water. Water is treated with chlorine to disinfect and supply water that is free from germs. Even after processing the water with chlorine when it reaches the public it still has some chlorine in it. It is better to use some dechlorinating filters to remove chlorine from it before you drink it.
Dechlorination can be done using chemicals like sodium thiosulphate. But with this method ammonia is released and the level of oxygen is reduced in water. These have to be monitored properly before using the water treated with this method. Another way is to use air stones or towers to aerate the water so that chlorine dissipates into air. You can use charcoal filters so that the chlorine and chloramines are removed. In fish farms disinfection of water is done with the UV light treatment which removes chlorine.
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