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Question

Average rate of water consumption per head per day as per Indian standard is:

A
200 litres
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B
135 litres
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C
165 litres
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D
100 litres
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Solution

The correct option is B 135 litres
  • The IS code lays down a limit on domestic water consumption between 135 to 225 lpcd.
  • Under ordinary conditions (as per IS 1172:1993) the minimum domestic water demand for a town with full flushing system should be taken at 200 I/h/d although it can be reduced to 135 l/h/d for economically weaker sections and LIG colonies (Low income group) depending upon prevailing conditions.
  • The components of domestic water demand are (per capita/per day)
(a) Drinking - 5 litre
(b) Cooking - 5 litre
(c) Bathing - 55 litre
(d) Cloth washing - 20 litre
(e) Utensils washing - 10 litre
(f) House washing - 10 litre
(g) Flushing of water closets - 30 litre
Total = 135 litre/day/capita

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