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Community DR.MOHAMMED JASIM
WATER (2)
Water Cycle:
Approximately 97 percent of water being the salty sea water and 2 percent is frozen in polar ice
caps. Thus only 1 percent of the world’s water is usable to human being and that as precious as
life itself as lack of water (dehydration) kills as faster than lack of food (starvation).
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ALTERNATIVES TO CHLORINATION
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O
Bleaching powder
O
Chlorine tablets:
O
Iodine:
For Water filtration
1. Potassium permanganate:
2. Alum: