Biochemical Oxygen Demand of Safe Drinking Water must be

By Aina Parasher|Updated : July 26th, 2022

Biochemical oxygen demand of safe drinking water must be

  1. 0 ppm
  2. 50 ppm
  3. 100 ppm
  4. 200 ppm

Answer: A. 0 ppm

Biochemical oxygen demand of safe drinking water must be 0 ppm.

Solution

As per IS 10500: 2012

Drinking water quality parameters are

Parameter

Standard value

pH

6.5-8.5

TDS(mg/l)

500

Hardness as CaCO3(mg/l)

200

BOD (ppm)

0

Alkalinity as CaCO3(mg/l)

200

The presence of BOD shows the presence of organic matter into it which depicts the presence of microorganism into it. And in drinking water there should not be any microorganism present into it. Hence, Biochemical Oxygen Demand (BOD) of drinking water should be zero.

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