Assertion: slum's population | /r/HasSubevent | decline
Facets:
value: in not only ground water
type: OTHER
Source sentences:
text: 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