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Can we harvest Rainwater anywhere?

Can we harvest Rainwater anywhere?

There is a common misconception that rainwater harvesting needs an excess of equipment and space, but several people have proved that rainwater harvesting is a sustainable method that can be adopted in any space. Rainwater Harvesting can go a long way to refresh groundwater levels, reduce urban flooding and ensure water availability.

Recently a school in Bengaluru saved 50 lakh litres of water in a single year through its rainwater harvesting set up. With 12 pits of 10,000 litre capacities and by collecting surface and roof water run-off the school was able to save this substantial amount of water. If you want to see Rainwater harvesting in action then you need to head to the Sir M Visvesvaraya Rain Water Harvesting Theme Park in Jayanagar, Bengaluru. The park is designed by RWH Expert and Champion A R Shivkumar and features different working setups of rainwater harvesting, interactive models, Q&A setups, infographics and many more, surely warrants a visit for the uninitiated.

The theme park has working models and infographics for visitors to easily understand how Rainwater harvesting works and how the water can be filtered and saved for future use. It also demonstrates percolation set up for pavements and driveways to help recharge ground water. It demonstrates the kind of garden plants that one needs to grow in order to ensure that the water is used in gardening purpose is well-managed. The filter system that is needed for basic filtration while collecting rainwater is also shown.

The World Economic Forum has estimated that the drinking water demand will double in the next 5 years as per a recent report. If this is true, then rainwater harvesting and conservation is the best known method to ensure that we have a continuous supply of drinking water. Rainwater harvesting is not a method that is restricted to just individual homes or residential communities. Rainwater can be harvested from all flat surfaces and rooftops. That means rainwater can be harvested at

  • Pavements
  • Open grounds
  • Parks
  • Office buildings
  • Factories
  • Schools
  • Hospitals
  • Unpaved areas
  • Parking lots
  • Malls

Rainwater Harvesting isn’t just an activity for a home, it is an activity that can save the community from water shortages and also make available clean and fresh water without stressing the groundwater table.

In ecological sensitive areas like the mountainous terrains and forests, the surrounding towns and villages face the brunt of climatic changes and soil erosion from water run-off. Rainwater harvesting can prevent these mishaps while providing clean potable water. The water is also useful for irrigation of crops so rainwater harvesting isn’t just an urban activity. Rural areas also suffer from the vagaries of climate change and the availability of clean potable water is important for the farming community as well.

This nature friendly approach is easy to retrofit into our existing systems and thus needs to be considered for ensuring that we have a long term sustainable solution for conserving our most precious resource.

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