I want to know the answer to the following question:
What is the rating for the hardness of Hyderabad's water?
All the background I'm provided with is that "Ground water around Hyderabad, which has a hardness of up to 1000 ppm, around three times higher than is desirable, is the main source of drinking water but the increasing population and consequent increase in demand has led to a decline in not only ground water but also river and lake levels.". Is that enough to answer the question?
Answer: yes