This Chennai man came up with a genius plan to harvest rainwater at an affordable cost. Dayanand Krishnan (45) from Chitlapakkam in Chennai spent just Rs 250 to invent an impromptu arrangement to harvest rainwater - purchasing a cloth filter worth Rs 20 and two PVC pipe bends. With this equipment, Dayanand Krishnan created a diversion on his existing pipeline that helped rainwater flow from his 400-square-foot rooftop to a drum, collecting 225 litres of water every 10 minutes, he stated. Before draining itself into the drum, the rainwater passes through the filter attached to the pipe’s end, effectively removing major impurities.

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