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Under Lalbagh: How a Botanical Garden Forced Bengaluru to Rethink Its Tunnel Road

The Lalbagh tunnel road project has forced Bengaluru to rethink plans for a proposed tunnel through one of the city’s oldest and most important green spaces. EdPublica visits Lalbagh Botanical Garden and speaks to the people who walk through it every day. The Lalbagh tunnel road has become the clearest test yet of how far public pressure can move a government once a decision looks final.

Dipin Damodharan

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Lalbagh tunnel road debate
Morning walkers cross Lalbagh Rock's summit, the shrine visible in the distance. The three-billion-year-old Peninsular Gneiss beneath them — often mistaken for granite, but a distinct metamorphic formation — is now at the centre of Bengaluru's tunnel road dispute. Image: Dipin Damodharan/EdPublica

A Rs 17,000-crore-plus tunnel road was meant to cut Bengaluru’s commute times. Instead, it ran into a three-billion-year-old rock — and a government now scrambling to find another way through. EdPublica visits Lalbagh Botanical Garden and speaks to the people who walk through it every day.The Lalbagh tunnel road has become the clearest test yet of how far public pressure can move a government once a decision looks final.

It is early morning at Lalbagh’s West Gate, and walkers are already streaming in — no ticket needed at this hour, the entry stays free until nine. Somewhere past the bougainvillea, the Rose Garden is waking up in the mist, and a flock of parakeets is making its usual racket around the glasshouse. For most of the people filing in, this is simply the start of another day — a walk, a stretch, a bit of quiet before Bengaluru’s traffic takes over. Few of them are thinking about what lies beneath their feet: a proposed ten-lane road tunnel that, on paper, was meant to run straight through this ground.

The autorickshaw driver who dropped this reporter near the gate had his own way of putting it. He’d seen the protest that filled the park on a Sunday morning not long ago — thousands of people, banners, a human chain stretching around the old rock. He didn’t have strong views either way about tunnels and traffic, he said, but he’d noticed something: when the government backed down on the law that triggered it all, and signalled it might route the project around the garden instead of under it, people he spoke to seemed relieved. Since then, he said, he’d been getting more fares to Lalbagh than usual — visitors curious, it seemed, about the garden that had been all over the news.

Rajendar, who lives in Jigani on the city’s southern edge and drives roughly ninety minutes to visit, put it more simply. He comes for the green, he said — for a couple of hours where the air feels different, away from the concrete and the horns. A garden like this, he felt, was not something the city had many more of to spare.

Lalbagh tunnel road
The entrance to Lalbagh Botanical Garden, one of Bengaluru’s historic urban green spaces.
Credit: Dipin Damodharan/EdPublica

Not everyone was willing to be named. A corporate employee, mid-morning break, walking briskly along the lake path, agreed to talk only on condition of anonymity. His view was blunt: whatever the traffic problem is, running infrastructure like this under a garden like Lalbagh is not the way to solve it. The government, he said, needs to reconsider — and find a fix that doesn’t ask a 240-acre lung space to absorb the cost.

A garden older than the city’s traffic problem

Lalbagh’s story predates the automobile by more than a century. Hyder Ali, the ruler of Mysore, laid it out in 1760 as a private garden modelled partly on Mughal design; his son Tipu Sultan expanded it with plants brought back from campaigns and trading contacts across the region. British superintendents took over after, adding the glasshouse in 1890 — built, like much of the era’s civic architecture, in conscious echo of London’s Crystal Palace — and the garden has hosted its twin flower shows around Republic Day and Independence Day ever since.

Today it holds more than 1,850 plant species across 240 acres, including a roughly 250-year-old silk cotton tree said to date to Tipu Sultan’s time, and the Lalbagh Rock — a granite-gneiss outcrop now estimated by geologists to be about three billion years old, among the oldest exposed rock formations anywhere on the peninsula. A watchtower built during the reign of Kempegowda II sits on it. Campaigners have been pushing to have the rock considered for UNESCO recognition, in the same conversation as sites like Hampi.

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The National Geological Monument marking the Peninsular Gneiss at Lalbagh Botanical Garden, Bengaluru. Credit: Dipin Damodharan/EdPublica

That rock, and the ground around it, is precisely what the tunnel road project has to pass through.

Lalbagh’s fight is, in that sense, a small and very local chapter of a much bigger story. UN-Habitat’s World Cities Report 2024 found that the average share of green space in cities worldwide fell from 19.5 per cent in 1990 to just 13.9 per cent by 2020 — and the decline has been sharper still in this part of the world, with East and Southeast Asia’s urban green cover dropping from 32.5 per cent to 18.6 per cent over the same period. Every city loses its green space to something that looks, at the time, like a reasonable trade-off — a road, a housing block, a transit line. Bengaluru’s version of that trade-off currently runs 50 to 100 feet under a botanical garden.

Lalbagh Tunnel Road: Bengaluru’s Controversial Project Faces a Rethink

What the Lalbagh Tunnel Road Project actually proposes

The Bengaluru Tunnel Road — sometimes called the Twin Tunnel Road — is planned to run 16.5 to 16.75 kilometres between Hebbal in the north and Central Silk Board in the south, largely beneath the Outer Ring Road corridor. Its cost has been quoted at different points as roughly INR 17,000 crore, INR17,698 crore and, more recently, INR 22,267 crore, after Adani Group entities were reported to have won the contract. As originally designed, the alignment required roughly six acres of Lalbagh land — most of it temporary, during construction — for two entry and exit ramps and a ventilation shaft, with one ramp passing within a few hundred metres of Lalbagh Lake and another running close to the rock formation itself, at depths of 50 to 100 feet.

What the reports found

Three separate technical reports have shaped the debate, and none of them offer the government much comfort.

A Geotechnical Interpretative Report prepared for the city’s civic body by Rodic Consultants, dated September 2024, flagged the Lalbagh stretch as a “bedrock transition zone” and noted a geological lineament — a fault-like feature — crossing the proposed alignment near the lake, along with risks of groundwater seepage and seasonal water-table shifts.

A Geological Survey of India expert committee went further. Its report, submitted to the government in April 2026, warned that tunnelling and blasting near the rock could widen existing cracks, destabilise parts of the formation, and disturb groundwater flows into Lalbagh Lake — and separately flagged risk to the historic Kempegowda watchtower. GSI also noted civil-society efforts to have the rock nominated as a UNESCO site.

A third, independent study — by the Sustainable Transportation Lab at the Indian Institute of Science, led by Professor Ashish Verma — questioned the project’s basic logic rather than its geology. Modelling suggested the tunnel would carry only around 1,200 passengers per hour per direction, against roughly 69,000 for a nine-coach metro line built at comparable cost; in a high-toll scenario, the study projected the tunnel’s volume-to-capacity ratio could fall as low as 0.1 — a road built for far more traffic than would likely use it. The same analysis suggested the project could, in some scenarios, add to the city’s overall emissions rather than cut them, by drawing commuters away from mass transit and towards private cars.

The law that lit the fuse

If one thing turned this from a planning dispute into a street movement, it was a single piece of legislation.

The Karnataka Government Parks (Preservation) (Amendment) Bill, 2026, amends a 1975 law that has, until now, given government parks and gardens fairly strong statutory protection. The amendment inserts a new provision allowing the state to “alienate” — that is, sell, lease, gift, exchange, mortgage or otherwise transfer — up to 5 per cent of the total area of any government park or garden in Karnataka, for specified public infrastructure and utility projects. Applied to a 240-acre site like Lalbagh, that threshold works out to roughly 12 acres, twice what the tunnel’s original design was reported to need.

The government’s case is that the change is generic policy, not a Lalbagh-specific fix: Chief Minister D.K. Shivakumar has said it is meant to enable ordinary public works, such as road-widening, without the cost and delay of separately acquiring private land, and that the provision does not open parkland to private developers — land can only be leased, transferred or exchanged to government departments, statutory authorities and local bodies. Critics were not persuaded. The Bill was cleared by the Cabinet and passed by both Houses of the legislature on 24 August 2026 amid opposition protests inside the Assembly and, its critics say, with little substantive debate — timing that, coming as the tunnel’s alignment through Lalbagh was already under challenge in court, read to many as a legislative route around the garden’s protections rather than a coincidence.

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Lalbagh Lake, part of the garden’s landscape that could be affected by changes to groundwater flows during tunnelling.Credit: Dipin Damodharan/EdPublica

How the fight unfolded

The reaction outside the legislature was faster than the government seemed to expect. Within three days of the Bill’s passage, more than 200 citizens, resident groups and environmental organisations gathered at Lalbagh on 27 August to form a human chain around the ancient rock, demanding the amendment be withdrawn. That Sunday, 30 August, the numbers swelled into the thousands for a march titled “Walk in Lalbagh, Walk for Lalbagh” — residents, walkers’ associations, cycling groups and pro-Kannada organisations alongside Bengaluru South MP Tejasvi Surya, Union Minister Shobha Karandlaje and other BJP lawmakers, plus veteran environmentalist A.N. Yellappa Reddy. Marchers sat and lay across the Peninsular Gneiss rock itself and raised slogans in Kannada and English with a common refrain: not one inch of Lalbagh.

The mobilisation built on opposition that had already been running for months through the courts — public-interest litigation in the Karnataka High Court led in part by theatre personality Prakash Belawadi and civic figures including Adikesavalu Ravindra and N.S. Mukunda, and an earlier, smaller human chain in early August aimed specifically at protecting the geological monument from the tunnel.

Facing that pressure, and with BJP leaders petitioning the Governor to withhold assent to the Bill, the state Cabinet withdrew it within days, on 3 September 2026. Shivakumar said the legislation would be reintroduced later, after wider public consultation — it has not been dropped for good. A week after that, on 9 September, he went a step further and said he had asked Greater Bengaluru Development Minister Krishna Byre Gowda to study alternatives to using Lalbagh land for the tunnel. That is an instruction to examine options, not a decision to reroute — no revised alignment has been published, and the original six-acre land requirement, the detailed project report and the tender awarded to Adani entities all remain officially in force.

Several petitioners have said they intend to keep challenging the project on transport and procedural grounds regardless of what happens to the amendment or the alignment. Their case — over the withheld 2025 expert report, the missing environmental impact assessment and questions about statutory transport-authority approvals — is due back before the Karnataka High Court in December.

Why the green matters, in numbers

  • 240 acres — Lalbagh’s total area, one of the two largest green lungs in central Bengaluru alongside Cubbon Park.
  • 1,850+ plant species recorded in the garden, built up over roughly 265 years by Mysore rulers, British superintendents and the state horticulture department.
  • ~3 billion years — estimated age of the Lalbagh Rock, a Peninsular Gneiss formation and protected National Geological Monument.
  • 16.5–16.75 km — length of the proposed tunnel road corridor between Hebbal and Silk Board.
  • ~6 acres — Lalbagh land originally required for the tunnel’s ramps and ventilation shaft.
  • 1,200 vs 69,000 — projected passengers-per-hour-per-direction for the tunnel versus a comparably priced metro line, per the IISc study.
  • INR 1,000 crore/km — estimated tunnel construction cost, against roughly ₹500 crore/km for metro and INR 110 crore/km for suburban rail, by the same analysis.

A retreat, not a resolution

For now, the garden itself shows no sign of the fight above and around it. The lake is calm, the rock still draws its usual scatter of visitors reading the noticeboard about its age, and the morning walkers keep coming. What has shifted is something real but narrower than it looks: a government caught off guard by how fast a legislative manoeuvre turned into a mass protest, and forced into a public climbdown within ten days of passing a law.

That is not the same as Lalbagh being safe. The amendment is shelved, not repealed, and Shivakumar has said it will return after “consultation.” The instruction to study a route around the garden is exactly that — a study, with no published alternative and no change yet to the project’s land requirement, tender or contractor. The Geological Survey of India’s warnings about the rock, the watchtower and the groundwater, submitted in April and made public only in September, have not been formally answered. And the oldest thread of opposition — the court case over how the project was tendered and cleared in the first place — continues in December, indifferent to whichever way the alignment eventually bends.

So the honest answer, for Rajendar driving in from Jigani, or for the corporate employee unwilling to give his name, is not that they won. It is that a fight most people assumed was already lost turned out not to be — and that the next few months, in a courtroom and in a minister’s office rather than at a human chain, will decide whether that counts for anything.

Dipin Damodharan is an award-winning journalist, editor and media entrepreneur, and Co-founder and Editor-in-Chief of EdPublica, an independent global media platform covering education, science, research, innovation, climate and public policy. With more than a decade of experience in journalism, he has worked across print, digital and multimedia media. His reporting explores science, climate, sustainability and the social impact of research and innovation. His work has been recognised by the Solutions Journalism Network and other journalism organisations.

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Standing with Teachers: The People Who Shape India’s Future

Standing with teachers means supporting their professional growth, working conditions and role in shaping India’s future amid rapid technological change.

V Rajesh Mohan Rao

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Standing With Teachers
Image credit; Soumayan Biswas/Pexels

Standing with teachers means more than celebrating them on World Teachers’ Day. It means giving them the support, professional autonomy and working conditions needed to shape India’s future.

Every year, World Teachers’ Day gives us a chance to speak about teachers. But 5 October 2026 is more than another day of appreciation. This year marks 60 years of the 1966 ILO/UNESCO Recommendation concerning the Status of Teachers, and the theme, set by UNESCO with the ILO, UNICEF and Education International, is “Standing with teachers: 60 years of protecting the profession, advancing its status and shaping our futures.” Respect for teachers cannot remain a ceremonial idea. It must become a continuing social and educational responsibility.

Standing With Teachers in a Changing Education System

India has always given the teacher an important place. From the traditional gurukula system to the modern classroom, the teacher has been more than a person who delivers lessons. A teacher has been a guide, a mentor, a listener and, often, a source of confidence for a young person. The subjects taught in a classroom may be forgotten with time, but the encouragement received from a good teacher can last a lifetime.

The teacher’s role, however, is changing rapidly. Students today live in a world of smartphones, social media, artificial intelligence and unlimited digital information. A student can find an explanation for almost any question within seconds. This does not make the teacher less important. In many ways, it makes the teacher more important.

Information is not the same as knowledge, and knowledge is not the same as wisdom. Students need someone who can help them tell reliable information from misinformation, understand different points of view, ask meaningful questions and develop the confidence to think independently. Technology can provide information, but education also requires human understanding.

This is why the teacher of the future cannot be seen simply as a provider of content. The teacher must increasingly become a mentor and a facilitator of learning. Technology should remain a tool in the teacher’s hands, not a substitute for the teacher. Artificial intelligence can explain a concept, but it cannot fully understand the circumstances, emotions, aspirations and difficulties of every student in a classroom.

The human relationship between teacher and student remains at the heart of education.

India also needs to think seriously about the professional status of teachers. Respect should not be limited to Teachers’ Day speeches, greetings and awards. A profession is respected only when its practitioners receive adequate professional support, opportunities for continuous learning, reasonable working conditions and a meaningful voice in decisions that affect education.

UNESCO’s concept note for this year describes teacher status in three parts: symbolic, meaning how far teaching is valued; professional, meaning autonomy, support and a voice in policy; and material, meaning salaries, workloads and working conditions. It adds that the world needs 50 million more teachers by 2030 to meet the global education goal.

Teachers are expected to do much more than teach. They prepare lessons, assess students, maintain records, attend meetings and activities, communicate with parents and often respond to children’s social and emotional needs. These responsibilities require time, training and institutional support. The quality of education therefore depends not only on curriculum and infrastructure but also on the conditions in which teachers work.

Context matters too. Education in India takes place in very different social and geographical circumstances. A teacher in a major city and a teacher in a remote village face very different challenges, yet both are expected to prepare young people for an increasingly complex future.

Teachers in smaller towns and rural areas often become important links between school and community. They encourage children to continue their studies, guide families, identify students who need extra support and create opportunities where resources are limited. Their contribution deserves greater visibility.

Teachers also have a responsibility to preserve values while preparing students for change. Education should build employability and technological skills, but it should also cultivate honesty, compassion, discipline, respect for others and democratic values. An education system cannot be judged by examination results alone. It must also ask what kind of citizens its classrooms are producing.

World Teachers’ Day should therefore be a day of reflection, not only celebration.

The relationship between education and society is inseparable from the relationship between teachers and society. If we want responsible citizens, we must give teachers the freedom and support to nurture responsibility. If we want innovative young people, teachers must themselves be encouraged to experiment and learn. If we want inclusive classrooms, teachers must be supported in understanding different learning needs.

World Teachers’ Day should therefore be a day of reflection, not only celebration.

India has made significant progress in expanding access to education and embracing digital learning. The next challenge is to ensure that technology, policy and institutional reform strengthen the teacher rather than marginalise them. The teacher should remain at the centre of education even as its tools change.

The world also faces new challenges, including climate change, migration, social inequality and rapid technological transformation. UNESCO’s concept note for this year’s observance points to similar pressures on the profession, among them digital technologies and artificial intelligence, climate change, migration, conflict and displacement. Teachers are among those who must help young people understand and respond to them.

That responsibility cannot rest on teachers alone. Governments, educational institutions, parents, communities and society at large must stand with them.

A teacher may not always see the result of their work. A student may become a scientist, entrepreneur, farmer, civil servant, artist, engineer or teacher many years after leaving the classroom. Somewhere in that journey there may be a lesson, a word of encouragement or a moment of trust that came from a teacher.

That is the quiet power of teaching.

On World Teachers’ Day 2026, the question should not simply be, “How do we thank our teachers?” It should also be, “How do we create an environment in which teachers can do their best work?”

Standing with teachers means respecting their knowledge, listening to their experiences, supporting their professional growth and giving them the conditions they need to teach well.

The future of education will certainly involve new technologies. Classrooms will change and learning methods will evolve. But one thing should remain constant: the importance of a committed teacher who sees a student not merely as a mark or a data point, but as a human being with potential.

If we want to shape a better future, we must invest in those who help shape the people who will live in it.

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Marshall Islands: Why the US Nuclear Legacy Is Back Before the UN

Between 1946 and 1958, the United States conducted 67 nuclear tests in the Marshall Islands, exposing communities to radioactive fallout and forcing repeated relocations. Decades later, health concerns, restricted access to ancestral lands and demands for U.S. nuclear test archives remain unresolved.

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Aerial view of a coastal community in the Marshall Islands, with turquoise waters, sandy beaches, homes, roads and green vegetation along the shoreline.
An aerial view of a coastal settlement in the Marshall Islands, where communities live along narrow strips of land surrounded by the Pacific Ocean. Image credit: Mohamed Sarim/Pexels

The people of Bikini Atoll left their homes in 1946 after the United States selected the atoll for nuclear weapons testing. They were told the move would be temporary. More than seven decades later, most of their descendants still do not live on Bikini. That displacement was the beginning of a much larger nuclear testing programme across the Marshall Islands.

Between 1946 and 1958, the United States carried out 67 nuclear weapons tests in the islands, which were then under U.S. administration as part of a United Nations trust territory. The tests took place mainly at Bikini and Enewetak atolls, although radioactive fallout reached communities elsewhere.

For Marshallese communities, the consequences were not limited to the two testing sites. People were moved between islands, exposed to radiation, separated from traditional lands and, in some cases, later moved again when returning home proved unsafe. The most consequential test came on March 1, 1954.

Castle Bravo and the Fallout

At Bikini Atoll, the United States detonated Castle Bravo, a thermonuclear device that became the country’s largest nuclear test. The explosion was much more powerful than expected, and radioactive fallout travelled beyond the planned danger zone.

Rongelap and Utrōk atolls were among the inhabited areas affected. Residents were eventually evacuated, but some were later returned to their islands. Concerns about continuing radioactive contamination subsequently led to further relocations.

The effects were recorded in the health of exposed populations. Studies and U.S. government programmes have documented elevated risks of certain cancers and thyroid disease among people exposed to radiation. Health concerns also extended to reproductive outcomes and other conditions associated with radiation exposure.

The testing programme also changed the physical basis of life on the islands. Much of the Marshall Islands consists of small, low-lying atolls where communities have traditionally depended on limited land and marine resources. When an island became contaminated or was designated for testing, relocation meant more than moving houses. Communities lost access to food sources, burial grounds, customary lands and places associated with family histories. Bikini illustrates the problem particularly clearly.

Residents were allowed to return in the 1970s, but they were removed again in 1978 after radiation concerns, including contamination of locally produced food, made permanent resettlement unsafe. The original Bikini community has never fully returned.

What Happened After the Tests Ended?

The United States stopped nuclear testing in the Marshall Islands in 1958. The relationship between the two countries changed substantially in the following decades, culminating in the 1986 Compact of Free Association.

The agreement included provisions dealing with the consequences of the nuclear testing programme. The United States established programmes for medical surveillance and treatment and environmental monitoring, while compensation arrangements were created for nuclear-related claims. Those measures have not resolved every issue raised by the testing programme.

Health care remains a major concern because exposure occurred across different communities and generations, while long-term monitoring is needed for diseases that may emerge decades after radiation exposure. Environmental questions also remain around the safety of returning to contaminated islands and the reliability of food grown or gathered there. There is another problem: access to information.

Why the Archives Matter

The Marshall Islands has sought greater access to U.S. government records concerning the nuclear tests, radiation exposure and the decisions made during the testing period.

Those records could help answer questions that remain important today. What information did U.S. authorities have about radiation risks at different stages of the testing programme? What did they tell Marshallese communities? Why were some communities returned to affected islands? How were decisions about evacuation and resettlement made?

For researchers, historical records can also complement health and environmental data collected over subsequent decades.
The UN has previously raised concerns about gaps in access to information relating to the nuclear programme, including records that were incomplete, redacted or otherwise unavailable to Marshallese authorities. That makes the latest UN intervention more than a call to preserve historical documents.

Why the Issue is Being Raised Again

The UN human rights body has now called on the United States to take additional steps to address the nuclear legacy in the Marshall Islands. The recommendations include stronger healthcare support for people affected by the testing programme and the release of classified archives.

The timing matters because the population directly exposed to the tests is ageing. At the same time, their children and grandchildren continue to live with the consequences of displacement, health monitoring and restrictions on access to some ancestral islands.

The Marshall Islands is also dealing with a practical problem that did not exist in the same form when the first tests were conducted: much of its population is now spread across different islands and overseas communities. Questions about land, health records, compensation and historical documentation therefore affect families who may no longer live in the places where their relatives were exposed.

The nuclear tests ended in 1958. The programmes created to deal with their effects have continued for decades. The latest UN report points to two areas where the organisation says further action is still required: medical care and access to information. For Marshallese communities, both are connected to the same history. The medical record explains part of what exposure did to people. The archives could help explain how decisions were made that exposed them in the first place.

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India Has Robots. So Why Does Manual Scavenging Still Put Workers in Sewers?

India has recorded at least 662 sewer and septic-tank deaths in 10 years, despite a legal ban on hazardous sanitation work and growing use of robotic cleaning. EdPublica examines why manual scavenging persists—and what it will take to end dangerous human entry into sewers.

Vaishnavi V S

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Manual scavenging: Three sanitation workers manually clean a garbage-filled, polluted waterway while standing and crouching in contaminated water, illustrating the hazardous conditions faced by workers involved in manual scavenging and sanitation work.
Manual sanitation work can expose workers to direct contact with human waste and contaminated environments. India has prohibited manual scavenging and hazardous sewer and septic-tank cleaning, while government programmes now promote mechanisation and safer sanitation practices. Representational image. Image credit: Soubhagya Maharana/ Pexels

Around 10 pm on 30 September 2025, a worker went down into the septic tank of a hotel in Kattappana, in Kerala’s Idukki district, to clean it. He became trapped. Two colleagues went in to pull him out and were trapped too.

The manhole was too small for rescuers to enter. The fire force brought in an earthmover to break open part of the structure, and after a rescue operation of about an hour and a half the three men were taken to hospital, where they could not be saved. They were Jayaraman, from Cumbum in Tamil Nadu’s Theni district, and Sundara Pandian, 36, and Michael, 23, both from Gudalur in the Nilgiris. The Idukki District Collector’s report later attributed the deaths to inhalation of toxic gas in a tank with critically low oxygen, though the gas itself was not identified. It recommended a multi-department inquiry and compensation for their families of the dead involved in manual scavenging.

Kerala is the state where this is least expected. In the dataset used for this report, it recorded three sewer deaths in the decade to 2025: two in 2016, one in 2017, and none since. The men of Kattappana do not appear in that count. Nor does Joy, a sanitation worker who drowned in a waste-choked canal in Thiruvananthapuram in July 2024. Every figure in this story is a minimum.

Between 2016 and 2025, the National Commission for Safai Karamcharis (NCSK) recorded 662 deaths across India in connection with hazardous sanitation work. India banned the employment of manual scavengers in 1993. The 2013 Act went further, barring anyone from being employed to clean sewers and septic tanks hazardously, that is, without the protective gear and safeguards its rules prescribe. Yet sanitation workers still enter through narrow openings, sometimes with only basic protective equipment, to clear blockages and clean spaces where sewage, toxic gases and human waste accumulate. The work can take hours; in the wrong conditions, it takes lives.

Manual scavenging: Horizontal bar chart showing recorded sewer and septic-tank deaths by state between 2016 and 2025. Tamil Nadu recorded 93 deaths, followed by Maharashtra with 84, Gujarat with 83, Uttar Pradesh with 81, Haryana with 69, Delhi with 65 and Kerala with 3.
Tamil Nadu recorded the highest number at 93 between 2016 and 2025, while Kerala recorded three in the dataset. Kerala is shown for contrast and does not include deaths that fall outside the official classification. Source: National Commission for Safai Karamcharis (NCSK).

The toll peaked in 2019, at 124 deaths. Tamil Nadu recorded the most over the decade, at 93, followed by Maharashtra (84), Gujarat (83), Uttar Pradesh (81) and Haryana (69); Delhi recorded 65. The five states named accounted for about 62 per cent of the deaths. Since the NCSK began counting in 1993, it has logged 1,361 such deaths, 264 of them in Tamil Nadu and 13 in Kerala.

Official series differ by source and date, because states report late. Replies in Parliament have put the toll for 2019 anywhere between 116 and 133, and a reply in March 2026 that counted from 2017 onwards ranked Uttar Pradesh first (86), ahead of Maharashtra (82) and Tamil Nadu (77). The pattern is consistent even if the totals are not.

A note on terms also matters here. The government draws a legal line between “manual scavenging”, which the 2013 Act defines as lifting human excreta from insanitary latrines, and the “hazardous cleaning” of sewers and septic tanks. It has told Parliament that no deaths have been reported from the first, while counting those in the second. Campaigners treat both as the same caste-bound labour. This report uses “manual scavenging” for the wider practice and “sewer deaths” for the deaths.

Behind the toll lies a harder question: if India has achieved significant technological advancement, why does manual scavenging still persist at all? What keeps people entering spaces they should never have to enter?

For Bezwada Wilson, national convenor of the Safai Karmachari Andolan (SKA) and a Ramon Magsaysay Award winner, the fight against manual scavenging has always been about more than sewers. Through the SKA, he helped document the practice, challenge official claims and take the issue to the Supreme Court. The Supreme Court’s 2014 judgment recognised the continuing problem, ordered the identification and rehabilitation of workers, and directed compensation of ₹10 lakh to the families of those who died in sewers, bringing dignity, equality and caste discrimination to the centre of the debate.

The Work Begins Long Before the Sewer

Wilson grew up in a community that has been tied to sanitation work for generations, and he has spent much of his life challenging the system that kept it that way. As a child, he says, he studied in a separate school near his settlement, where caste and language shaped where children from his community were sent to learn. He came to the movement against manual scavenging through an understanding of what prolonged contact with human excreta does to a person’s health and life.

People who come into contact with human excreta, he says in an interview with EdPublica, are exposed to deadly diseases. Their quality of life deteriorates. That, for Wilson, was reason enough to act. But the deeper problem is what happens when a community is identified with one kind of work for generations. Even education does not necessarily erase that association.

Wilson says government programmes aimed at upskilling members of sanitation-worker communities exist, but questions whether they are reaching people effectively. The Ministry of Social Justice and Empowerment told the Lok Sabha in 2022 that it had spent ₹266.16 crore on its self-employment scheme for the rehabilitation of manual scavengers since 2013-14; that scheme has since been replaced by NAMASTE. Students in these communities still face difficulties accessing education in many places.

Then there is discrimination. When people have been treated as inferior for generations, Wilson argues, a change in law does not automatically change the way society sees them. That matters because manual scavenging is not simply a story about a hazardous job. It is also a story about who is expected to do it.

The Number that Remains Visible

The 662 deaths recorded between 2016 and 2025 are a floor, not a full count. They are the deaths captured in the available dataset, and that distinction matters: the scale of the problem is larger than the deaths that make it into official or reported records. The NCSK says its figures draw on state governments’ reports, media reports and complaints it receives.

The gap between official and civil-society counts is wide. The Ministry told the Lok Sabha in August 2026 that 498 people died in hazardous sewer and septic-tank cleaning between January 2019 and June 2026, a toll that fell from 132 in 2019 to 47 in 2025. The SKA’s own tracking runs the other way, as the table shows. It has counted 113 deaths in the first seven months of 2026 alone; the government’s figure for the first four months is 52.

Manual scavenging in India: Bar chart comparing government and Safai Karmachari Andolan (SKA) counts of sewer and septic-tank deaths from 2022 to 2025. The government recorded 88, 65, 54 and 47 deaths, while SKA recorded 93, 102, 116 and 121 respectively, showing a widening gap.
The government and Safai Karmachari Andolan recorded increasingly different numbers of sewer and septic-tank deaths between 2022 and 2025. Sources: Lok Sabha reply, August 2026; Safai Karmachari Andolan.

The two series cannot both be right, and the difference is not only about counting. It is also about classification, since the government counts hazardous cleaning but not “manual scavenging”. Even among the deaths that are recorded, accountability is slow: the NCSK says compensation has been paid in 1,206 of the 1,361 cases logged since 1993, with 101 still pending.

Vimal Govind M K, founder and CEO of Kerala-based Genrobotics, came to the problem from the technology side. His company turned its robotics towards sewer cleaning, he says, after the founders came across a newspaper photograph of a man who had died inside a sewer in Kozhikode, Kerala. The image changed the direction of their work.

“We decided to pivot the technology we were developing towards a completely different problem—to prevent people from entering sewers and doing this dangerous work manually,” Govind said.

That decision eventually produced Bandicoot, a robotic system designed to clean manholes without sending a person inside. Genrobotics says it was first deployed in Kerala in 2018. But the existence of a machine does not mean people stop entering sewers.

A Robot Exists. So Why are People Still Entering?

Genrobotics says it has trained more than 3,000 workers and has around 400 robots operating in India. Its public figures have varied: a March 2026 press release spoke of more than 275 deployments, while earlier interviews cited 300 and 350 robots. Govind says a task that can take three to four hours when done manually can be completed in around 20 minutes using the technology. Operating one robot takes two workers, he says.

Manual scavenging: Genrobotics’ Bandicoot robotic system positioned over manholes during sewer-cleaning operations, with a sanitation worker operating the robot in the daytime image and the robot deployed at night in the second image.
Robotic systems such as Genrobotics’ Bandicoot are designed to clean manholes without sending sanitation workers inside. The system is operated from outside the manhole, allowing hazardous sewer-cleaning work to be mechanised.

Figures from the field point the same way. Chennai’s water board has been reported to have cleaned more than 5,000 manholes in the first year of deployment, and a company case study lists 1,111 manholes cleaned by two robots for Mumbai’s civic body between September 2024 and March 2025. Both figures come from the company or from secondary reports.

On paper, the logic seems straightforward: if a machine can enter a sewer, a human being should not have to. But India’s sanitation infrastructure does not operate on paper. Municipalities and water boards buy machines, yet many of the deadliest jobs are commissioned by someone else. Kattappana was a hotel’s tank. This week in Mumbai’s Santacruz East, Santosh Kashate, 50, died and Ajay Thakur, 30, was hospitalised after they allegedly entered a municipal sewer manhole while cleaning a housing society’s drain. Police were registering a case of death by negligence against the contractor, and said society members could also be booked for hiring private workers without informing the Brihanmumbai Municipal Corporation.

Some facilities need specialised cleaning only occasionally. Private establishments have little reason to invest in technology for a task they might need once a year, or once in several years. Govind points to another problem: safety enforcement.

In India, confined-space management and workplace safety remain uneven, he says. In countries such as Singapore and the UAE, workers require safety training and permits before undertaking such work, with safety procedures built into the job itself. India’s problem is therefore not simply a shortage of machines. It is also a shortage of systems that make entering the sewer unacceptable.

The courts have pushed in that direction. In October 2023, in Dr Balram Singh v Union of India, the Supreme Court raised compensation for sewer deaths from ₹10 lakh to ₹30 lakh. In January 2025 it barred manual sewer cleaning in six metropolitan cities, and in July 2026 it issued show-cause notices on contempt to the chief secretaries of five states. After two contract workers died in a Tiruchirappalli manhole on 22 September 2025, the corporation announced ₹30 lakh for each family and filed a complaint against the contractor. Compensation and complaints now follow such deaths. Prevention still lags.

When Protective Equipment is not Enough

For years, the response to hazardous sanitation work has often included protective equipment—masks, gloves and other safety gear. But Govind says equipment alone does not necessarily change behaviour. He says workers who have spent years entering sewers can become accustomed to the practice, and that even after being provided with protective equipment, some continue to enter because that is how the work has traditionally been done.

A small, rusted circular manhole cover set into a concrete surface, illustrating the narrow openings through which sanitation workers may be expected to access sewers and confined spaces.
A narrow manhole can leave barely enough space for a person to enter. Such confined openings can make sewer cleaning and rescue operations difficult, particularly when workers enter hazardous spaces containing toxic gases and low oxygen. Representational image. Image credit: Magda Elhers/Pexels

Official figures show the limits of the equipment route. Under the government’s NAMASTE scheme, 89,915 sewer and septic-tank workers had been validated by August 2026, and about 87,000 protective kits had been distributed by the scheme’s third anniversary in July. The Lok Sabha was also told that 52 people died in hazardous cleaning in the first four months of 2026. The figures do not say who the dead were or whether they had been profiled. They do show that distributing equipment has not, by itself, ended the deaths.

Changing that, Govind says, requires training and a cultural shift. That observation brings the technology debate back to Wilson’s argument. If caste has historically determined who performs sanitation work, and if generations of workers have been conditioned to see hazardous cleaning as part of their occupation, then a robot can solve only one part of the problem. It can keep a person out of the sewer. It cannot, by itself, determine what happens to that person afterwards.

What Happens to the Worker When the Robot Arrives?

This may be the most important question in the mechanisation debate. Automation is often discussed in terms of machines replacing people. In sanitation, however, the better outcome is different: workers moving from hazardous manual entry to safer, skilled roles.

Genrobotics says sanitation workers are trained to operate its technology and become part of its teams. The company said in January 2025 that more than 1,000 of the workers it had trained had become robot operators. It says the transition removes direct interaction with sewage from their work. A worker who once entered a manhole could instead operate a machine from outside it.

The job remains. The danger does not have to. Those numbers are the company’s own, though. What would settle the question is what operators earn, who employs them and whether the jobs last. The model also depends on municipalities and other employers actually investing in mechanisation, training workers and enforcing the rules.

Govind says budget allocation remains one of the major barriers to adoption. Government programmes and funds can support mechanisation, but ultimately policymakers and local administrators have to decide to spend the money. The government’s main programme is NAMASTE, launched in July 2023 with an outlay of ₹349.73 crore over three years to 2025-26 across more than 4,800 urban local bodies. It profiles sewer and septic-tank workers, provides protective kits and health insurance, and offers capital subsidies of up to 50 per cent for sanitation machines and enterprises. An extension to rural areas, with an additional outlay of about ₹498.73 crore for 2026-27 to 2030-31, has been reported.

The Geography Tells Another Story

The deaths are not evenly distributed across India. Kerala, by comparison, recorded three deaths in the dataset, two in 2016 and one in 2017, with none from 2018 to 2025.

That contrast is worth examining, but not celebrating too quickly. A decline in reported deaths does not, by itself, prove that hazardous sanitation work has disappeared. Differences in reporting, infrastructure, enforcement and the kinds of sanitation work carried out in each state can all affect the numbers. Kattappana and Joy’s death in Thiruvananthapuram sit outside Kerala’s count.

Govind says Kerala has stronger safety practices than many other states, while acknowledging that enforcement and investment remain challenges nationally. Genrobotics first deployed Bandicoot in Kerala in 2018, the year the zero run begins. The timing is suggestive, not proof, and Kattappana shows what a municipal robot does not reach: a private tank behind a hotel.

The more useful question, then, is not simply which state has the fewest deaths. It is what is different about the systems that keep workers out of hazardous spaces.

Besides the Number 662

India’s response has increasingly moved towards mechanisation. The government has also introduced programmes aimed at eliminating hazardous sanitation work, rehabilitating workers and creating safer sanitation systems.

The experiences of Wilson and Govind point to two requirements for the same goal. One is technological: make it possible to clean a sewer without sending a person inside. The other is social: make sure the person who no longer enters the sewer has the education, income, skills and social acceptance to move into safer work. Neither can replace the other. A third, the law, is meant to hold them together.

A robot can pull a worker away from toxic sewage. A law can prohibit an employer from sending that worker back in. A rehabilitation programme can offer another livelihood. But unless all three work together, the prohibition remains vulnerable to the same pressures that created the occupation in the first place.

Govind predicts that the sanitation industry could become almost completely automated within the next five to six years, with very little human involvement in hazardous work. It is an ambitious prediction. Against more than 4,800 urban local bodies, the company’s own count is a few hundred robots.

The technology may arrive before the social transformation does. And that is the real test for India. Not whether it can build a robot capable of entering a sewer. But whether it can build a system in which no human being has to.

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