Thu, May 04, 2023 page5

• Inaction on sewage endangers Indian cities

  • AFP, NEW DELHI
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  Mohammed Azhar holds his baby niece next to a storm drain full of plastic and stinking black sludge, testament to India’s failure to treat nearly two-thirds of its urban sewage.

  “We stay inside our homes. We fall sick if we go out,” the 21-year-old said in the Delhi neighborhood of Seelampur, where open gutters packed with plastic and sickly grayish water flow alongside the narrow lanes.

  “It stinks. It attracts mosquitoes. We catch diseases and the kids keep falling sick,” he added. “There is no one to clean the filth.”

  

  Seelampur resident Khalil Ahmad gestures next to a sewage canal filled with garbage in the neighborhood of Delhi, India, on Wednesday last week.

  Photo: AFP

  The UN late last month projected that India had overtaken China as the world’s most populous country, with almost 1.43 billion people.

  Its urban population is predicted to explode in the coming decades, with more than 270 million more people forecast to live in its cities by 2040.

  However, of the 72 billion liters of sewage generated in urban centers every day, 45 billion liters, enough to fill 18,000 Olympic-sized swimming pools, are not treated, Indan government figures for 2020 and 2021 showed.

  India’s sewerage system does not connect to about two-thirds of its urban homes, the National Faecal Sludge and Septage Management Alliance said.

  Many of the sewage treatment plants in operation do not comply with standards — including 26 of Delhi’s 35 facilities, media reports said.

  Coupled with huge volumes of industrial effluent, the sewage is causing disease, polluting India’s waterways, killing wildlife and seeping into groundwater.

  Although India has made major progress in reducing child mortality, diarrhea — caused mostly by contaminated water and food — remains a leading killer.

  More than 55,000 children under five died of diarrhea across India in 2019, a study published last year in the scientific journal BMC Public Health showed.

  The Yamuna in Delhi is one of the world’s filthiest rivers and is considered ecologically dead in places, although people still wash clothes and take ritual baths in it.

  It often billows with white foam, and facilities processing drinking water from the river for Delhi’s 20 million people regularly shut down because of dangerous ammonia levels.

  Despite some bright spots, as well as efforts to plant more trees alongside rivers, the situation elsewhere is often no better in big cities, including Mumbai and Chennai.

  In Bengaluru, Bellandur Lake has on occasion caught fire when methane, generated by bacteria feasting on sewage in the oxygen-depleted water, ignited.

  Mridula Ramesh, author of a book about India’s water woes who lives in a nearly net zero-waste home, said properly treating sewage into useable water would help solve the crisis.

  The World Bank said that India is one of the most “water-stressed” countries in the world, with plummeting water tables and increasingly erratic monsoon rains.

  Chennai nearly ran out of water briefly in 2019, and other cities might see similar calamities in the coming years due to excessive groundwater pumping and rainfall volatility.

  “India is headed for a water crisis. Sewage can so easily be co-opted to fight that and help us to a very large extent solve the problem in our cities,” Ramesh said.

  This could be achieved with decentralized treatment plants partially funded by the private sector or non-governmental organizations, with some of the fully treated sewage reused or released into local lakes.

  “India’s water is so seasonal. Many cities in India get 50 rain days, but sewage is available every day because you go to the bathroom every day... It’s such a powerful weapon,” she said.

  For Seelampur resident Khalil Ahmad, standing near an open drain as flies buzz around, a solution cannot come soon enough.

  “Children keep falling sick... If they don’t get treatment and medicine, the children will die,” he said.
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