Social & Preventive Medicine General 934a202c Criteria for drinking water quality recommended by WHO includes - A Colour < 15 TCU B pH 6.5-8.5 C Chloride 200-600 mg/1 D All High-Yield Explanation Ans. is 'a' i.e., Colour < 15 TCU; 'b' i.e., pH 6.5-8.5; 'c' i.e., Chloride 200-600 mg/l