This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Safe water criteria include – a) Free from pathogensb) Free from harmful chemicalsc) Free from chlorined) Free from colour and odoure) Usable for agricultural purposes 
Select and explain. 
A. acd, B. bcd, C. abc, D. abd
D: abd
Answer: D: abd 
Explanation: Safe and wholesome water 

Water intended for human consumption should be both safe and wholesome.
This has been defined as :-


Free from pathogenic agents.
Free from harmful chemical substances.
Pleasant to the taste, i.e., free from colour and odour; and
Usable for domestic purposes.


Water is said to be polluted or contaminated when it does not fulfill the above criteria