Rain Water Harvesting is a way to capture the rain water when it rains, store that water above ground or charge the underground water level and use it later. This happens naturally in open rural areas. But in congested, over-paved metropolitan cities, we need to create methods to capture the rain water.
Most metro cities in India have grown enormously in last few decades. Since most of the growth was unplanned, these cities suffer from lack of basic amenities and natural resources. Water is one of these scarce natural resources. The water shortage problem becomes more acute during summers as the level of ground water falls down. Rain water harvesting can be of great help in raising (or maintaining) the ground water levels. Rain water harvesting is relatively a new technology in India. However there are some solutions available in the market.
In recent years, Tamil Nadu State government has taken initiatives to encourage the use of rain water harvesting systems. Apart from creating awareness (through various programs) about the benefits of rain water harvesting, the state government is also providing easy loans and subsidies (for weaker sections) for installation of rain water harvesting systems.
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