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The Bureau of Indian Standards has prepared a draft standard for the supply of piped drinking water, named as "Drinking Water Supply Quality Management System-requirements for piped drinking water supply service." Which of the following statements are the key features of the draft? 1. After treatment the drinking water should conform to Indian Standard (IS) 10500. 2. Adoption of District Metering Area concept to control leakages. 3. Water audit should be conducted on quarterly basis. Select the correct answer using the code given below:

The Bureau of Indian Standards has prepared a draft standard for the supply of piped drinking water, named as "Drinking Water Supply Quality Management System-requirements for piped drinking water supply service." Which of the following statements are the key features of the draft? 1. After treatment the drinking water should conform to Indian Standard (IS) 10500. 2. Adoption of District Metering Area concept to control leakages. 3. Water audit should be conducted on quarterly basis. Select the correct answer using the code given below: Correct Answer 1, 2 and 3

The correct answer is 1, 2 and 3.

Key Points

  • The Bureau of Indian Standards (BIS) has prepared a draft standard for the supply system of piped drinking water.
  • The draft has been titled 'Drinking water supply quality management system — requirements for piped drinking water supply service'.
  • The water treatment process should be planned in such a manner that after treatment the drinking water should conform to the Indian Standard (IS) 10500 developed by the BIS. Hence 1 statement is correct.
  • The document also states that the concept of district metering area (DMA) is a concept for controlling leakages in the water network, which is essentially divided into several sectors, called the DMAs, and where flow meters are installed to detect leaks. Hence 2 statement is correct.
  • There are guidelines on water audit, which is a calculation of the amount of water put into distribution against the amount that is consumed.
    • The draft states that a water audit should be conducted quarterly. Hence 3 statement is correct.
  • The draft also mentions that water should be sampled at the treatment plant every four hours against quality parameters.
    • In the distribution system, the sampling should be done every eight hours at the water reservoirs.
    • Random sampling should also be done at household levels.

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