Question

As per the URDPFI Guidelines 2015, which of the following Organoleptic and Physical parameters comply with the acceptable limit requirements of drinking water quality?

• A. Colour: Maximum 5 Hazen units
• B. Turbidity: Maximum 1 NTU
• C. \textit{pH} Value: Minimum 10
• D. Total Dissolved Solids: Maximum 500 mg/l

Hint:

Drinking water standards focus on clarity, colour, taste, and chemical limits. pH values must remain within safe physiological range (6.5–8.5).

Answer 1

The Correct Option is A, B, D

According to the URDPFI (Urban and Regional Development Plans Formulation and Implementation) Guidelines 2015, acceptable limits for drinking water quality include organoleptic and physical parameters prescribed in line with national drinking water standards. Colour: The acceptable limit is \(\leq 5\) Hazen units, matching option (A).
Turbidity: The acceptable limit is \(\leq 1\) NTU for clear drinking water, matching option (B).
pH: The acceptable range for drinking water is typically 6.5 to 8.5. A minimum value of 10 is far outside the acceptable safe range. Thus option (C) is incorrect.
Total Dissolved Solids (TDS): The acceptable limit is \(\leq 500\) mg/l, matching option (D).
Therefore, the parameters that comply with acceptable limits are (A), (B), and (D).
Final Answer: (A), (B), (D)