Water pollution and wastage of water resources has become a habit in the recent past. The techniques adopted by the earliest civilisation to maintain harmony in the ecosystem through various means of utilising natural water have now been lost. Rainwater harvesting involves by process trapping the rainwater which flows out during the monsoon in huge quantity to put them into regular household use. This is the simplest of the conservation techniques which has been a part of Indian custom over centuries which is now being implemented in Chennai which can be termed as the largest water conservation procedure with over 5,00,000 installations. The city had faced water scarcity in the early 21st century, making it difficult to carry on livelihood. This insisted the people to compulsorily plant the rainwater harvesting means either on their backyard or terrace to make life easier.
Now, most houses in the Bangalore city can be witnessed having a bore well or reservoir in order conserve the rainwater which otherwise goes as a waste. Some houses have also put on essentials like charcoal and sand on the top of the wells to ensure the inlet of the cleanest water fit for use. A rainwater guidance centre called the Sir M Visvesvaraya Rainwater Harvesting Theme Park was set up to demonstrate harvesting techniques and to provide citizens guidance on design, cost and also connects them with trained plumbers. In Bangalore, it has been estimated that it has approximately 50, 000 installations for the same. Various other cities in the country are gearing up like Bangalore in order to make a law to make rainwater harvesting compulsory. This provides a new hope towards a better life for future.