Water conservation: Lessons from ancient India As drought-like conditions have gripped many parts of India this year, the pressure to drill borewells in search of increasingly scarce groundwater has escalated. Many regions are in the grip of a vicious cycle of drilling causing the water table to sink further. There is an urgent need to explore what benefits water conservation can bring, whether through modern or ancient water storage structures. This report explains, ecologically safe engineering marvels of water conservation have existed in India for nearly 1,500 years, including traditional systems of water harvesting, such as the bawari, jhalara, nadi, tanka, and khadin. Even today these systems remain viable and cost-effective alternatives to rejuvenate depleted groundwater aquifers, according to experts. With govt support, these structures could be upgraded and productively combined with modern rainwater-saving techniques such as anicuts, percolation tanks, injection wells and subsurface barriers. This may be a far more sustainable approach to alleviating the water scarcity crisis across India. Ultimately, water conservation has to be a key element of any strategy to bring an end to India’s perennial swings between drought and flood.

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