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What is Rainwater
Harvesting?

Rainwater harvesting is the collection and storage of rainwater for later use, rather than allowing it to run off.  It involves capturing rainwater from surfaces like rooftops and storing it in tanks, cisterns or other containers. The key components are:

  • A catchment surface (roof, ground, etc.) to collect the rainwater

  • A conveyance system (gutters, pipes) to transport the water

  • A storage tank or cistern to store the harvested rainwater

  • Filters or screens to remove debris and contaminants

 

The harvested rainwater can then be used for various purposes like landscape irrigation, flushing toilets, washing, or even drinking after proper treatment.

Rainwater harvesting has several benefits: 

  • It provides a free, renewable source of water 

  • Reduces demand on municipal water supplies 

  • Helps mitigate stormwater runoff and flooding 

  • Rainwater is free of chemicals and salts, ideal for irrigation 

  • Promotes water conservation and self-sufficiency 

 

It is a simple, low-cost technique that has been practiced for centuries, especially in arid regions. With growing water scarcity, rainwater harvesting is regaining popularity worldwide as a sustainable water management approach.

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