Bengaluru fast running out of water, and a long, scorching summer still looms
BHAVANI MANI Muthuvel and her family of nine have around five 20-litre (five-gallon) buckets worth of water for the week for cooking, cleaning and household chores.
“From taking showers to using toilets and washing clothes, we are taking turns to do everything,” she said. It’s the only water they can afford.
A resident of Ambedkar Nagar, a low-income settlement in the shadows of the lavish headquarters of multiple global software companies in Bengaluru’s Whitefield neighbourhood, Muthuvel is normally reliant on piped water, sourced from groundwater. But it’s drying up. She said it’s the worst water crisis she has experienced in her 40 years in the neighbourhood.
Bengaluru in southern India is witnessing an unusually hot February and March, and in the last few years, it has received little rainfall, in part due to humancaused climate change. Water levels are running desperately low, particularly in poorer areas, resulting in sky-high costs for water and a quickly dwindling supply.
City and state government authorities are trying to get the situation under control with emergency measures such as nationalising water tankers and putting a cap on water costs. But water experts and many residents fear the worst is still to come in April and May, when the summer sun is at its strongest.
LONG TIME COMING
The crisis was a long time coming, said Shashank Palur, a Bengaluru-based hydrologist with the think tank Water, Environment, Land and Livelihood Labs.
“Bengaluru is one of the fastestgrowing cities in the world and the infrastructure for freshwater supply is not able to keep up with a growing population,” he said.
Groundwater, relied on by over a third of the city’s 13 million residents, is fast running out. City authorities say 6,900 of the 13,900 borewells drilled in the city have run dry, despite some being drilled to depths of 1,500 feet. Those reliant on groundwater, like Muthuvel, now have to depend on water tankers that pump from nearby villages.
Palur said El Niño, a natural phenomenon that affects weather patterns worldwide, along with the city receiving less rainfall in recent years, mean “recharge of groundwater levels did not happen as expected”. A new, piped water supply from the Cauvery River about 100 kilometres (60 miles) from the city has also not been completed, adding to the crisis, he said.
Another concern is that paved surfaces cover nearly 90 per cent of the city, preventing rainwater from seeping down and being stored in the ground, said T.V. Ramachandra, research scientist at the Centre for Ecological Sciences at Bengalurubased Indian Institute of Science. The city lost nearly 70 per cent of its green cover in the last 50 years, he said.
Ramachandra compared the city’s water shortage to the “day zero” water crisis in Cape Town, South Africa, 2018, when that city came dangerously close to turning off most taps because of a drought.
The Indian government estimated in 2018 that over 40 per cent of Bengaluru residents won’t have access to drinking water by the end of the decade. Only those that receive piped water from rivers outside Bengaluru are still getting regular supply.
DRILLING BOREWELLS
“Right now, everyone is drilling borewells in buffer zones of lakes. That is not the solution,” Ramachandra said.
He said the city should instead focus on replenishing the over 200 lakes spread across the city, stop new construction on lake areas, encourage rainwater harvesting and increase green cover across the city.
“Only if we do this will we solve the city’s water problem,” he said.
Palur added that identifying other sources and using them smartly, for example by reusing treated wastewater in the city “so that the demand for fresh water reduces”, could also help.
Until then, some residents are taking serious measures. S. Prasad, who lives with his wife and two children in a housing society made up of 230 apartments, said they have begun water rationing.
“Since last week we’ve closed the water supply to houses for eight hours every day, starting at 10 a.m. Residents have to either store water in containers or do everything they need to in the allotted time. We are also planning on installing water meters soon,” he said.
Prasad said their housing society, like many others in Bengaluru, is willing to pay high costs for water, but even then it’s hard to find suppliers.
“This water shortage is not only impacting our work, but also our daily life,” Prasad said. “If it becomes even more dire, we’ll have no choice but to leave Bengaluru temporarily.”