system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Hardness of drinking water should be?
assistant
The correct answer is  Drinking water should be moderately hard.Softening of water is recommended if hardness ecxeeds 3mEq/l. Soft water- <1 mEq/l Moderately hard- 1-3 mEq/l Hard water- 3-6mEq/l Very hard water- >6mEq/l Parks textbook of preventive and social medicine.K Park. Edition 23.Pg no: 727