In recent months, Bengaluru’s acute water shortage has dominated headlines, sparking conversations in households and newsrooms alike. The city’s residents have been grappling with disrupted water supplies, exorbitant tanker prices — experiencing an 80% inflation in pricing — and stringent usage restrictions. This crisis, however, is not solely a consequence of mismanagement but rather a complex interplay of geographical challenges and unplanned urbanisation.
Situated 900 metres above sea level without any natural freshwater sources, Bengaluru has historically relied on lakes and tanks to meet its water needs. Regrettably, only a fraction of the water bodies remain today. Groundwater, a vital supplement, is rapidly depleting due to over-extraction and inadequate replenishment. Water from the Cauvery only fulfils ~50% Bengaluru’s water requirements. The remaining 50% currently comes from groundwater which is depleting very quickly. Of the 11,000 borewells in the city, 800 have been completely out of service and even in the ones that continue to be functional, water levels are receding. Erratic rainfall patterns exacerbated by climate change have further strained the city’s water resources. The Bengaluru crisis serves as a harbinger of what many Indian cities may face in the coming years. To avert a nationwide water catastrophe projected by 2030, we must adopt a multifaceted approach encompassing immediate actions, medium-term solutions, and long-term strategies. Immediate measures must focus on demand management, led by local municipal bodies. Municipalities could run campaigns that incentivise citizen action for demand management and foster a culture of water conservation. Such campaigns can be supported by technology such as smart water meters, engineering solutions on pressure management as well as plug and play aids like water aerators to empower citizens to reduce consumption effectively and curtail wastage at the household level.
Simultaneously, medium-term structural solutions like rainwater harvesting and wastewater treatment must be implemented on a broader scale. With proper collection and management led by programmatic solutions like percolation pits and tech-led innovations on rainwater harvesting and storm drain management, rainwater can substantially alleviate water stress.
