In recent years, fresh water availability has become one of the
main issues facing humankind. With rapid urbanization,
industrialization and population growth, drinking water
availability has decreased. Since the reformation and openingup
of China, water resource problems related to environmental
degradation have become increasingly serious due to rapid industrialization
and urbanization. Although many solutions have been
proposed, there is much interest in the use of roof-collected rainwater.
Rainwater harvesting (RWH) in urban areas is a strategy that
brings many benefits and could provide solutions to address current
water shortages, urban stream degradation and flooding