Where do we get water from?

Rainwater Harvesting
(i)    Water harvesting is the activity of collection of rainwater directly by various means.
(ii)   Harvested water can either be used immediately or it can be stored for later use.
(iii)   In Kerala and Mizoram, where it rains almost the whole year round, small tanks are used to collect rainwater, which drains from rooftops through pipes into these tanks. This water is used directly.
(iv)    In a place like Delhi where the monsoon lasts only for 3 months, it is more useful to collect rainwater as groundwater.