Why is groundwater considered unsustainable for Bengaluru?

Groundwater is not a sustainable resource for Bengaluru due to rampant exploitation through borewells leading to depletion, and a significant portion of surface runoff draining into polluted canals instead of recharging lakes.

What solution is proposed for Bengaluru's water scarcity?

Hydrogeologists suggest making rooftop rainwater harvesting compulsory in Bengaluru, highlighting its potential to generate substantial water resources for the city.

What is the impact of pollution on Bengaluru's lakes?

Nearly 25% of Bengaluru's surface runoff water drains into polluted sewage canals, and lakes are not receiving fresh water, with their carrying capacity reduced due to silt accumulation.

Home / Environment / Bengaluru's Water Woes: Groundwater Unsustainable, Experts Warn

Bengaluru's Water Woes: Groundwater Unsustainable, Experts Warn

20 Apr

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Summary

Groundwater is not a sustainable resource for Bengaluru's water needs.
Nearly 25% of surface runoff water drains into polluted sewage canals.
Compulsory rooftop rainwater harvesting could generate significant water.

Bengaluru's Water Woes: Groundwater Unsustainable, Experts Warn

Bengaluru is grappling with a severe water crisis, largely attributed to an over-reliance on groundwater, which experts deem unsustainable. KC Subhash Chandra, a hydrogeologist and former expert member of the Karnataka Groundwater Authority, stated that approximately 25% of the city's surface runoff water is lost to already polluted sewage canals. This situation, coupled with silt accumulation in lakes, diminishes their capacity and prevents them from receiving fresh water.