Do you save rain water?

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I live in a country which has different types of climates in different parts geographically. So, there is a major chance for drought as the number of active rivers are less. So, i think rain water saving is very essential. About four or five years back, the government enforced a rule that everyone must install a plant in their terrace or any suitable area and then on the water table under the ground has raised. I dont know what generally people do in other countries. May i know all your practices?