Three Contract Workers Die in Wastewater Tank at Tata Electronics Plant in Tamil Nadu

Three contract workers died of suspected asphyxiation on the evening of November 9 while cleaning a wastewater tank at a Tata Electronics facility in the Krishnagiri district of Tamil Nadu, police said on November 10. The plant, near Hosur and roughly 291 kilometers west of Chennai, makes components for Apple iPhones. Police registered a case and opened an investigation, while the district administration ordered a separate inquiry into how the men came to enter the tank.

How the deaths unfolded

According to police accounts, the workers were part of a four-member team handling maintenance at the effluent treatment plant. One worker, identified as B. Akmal, 28, opened the lid of a nano-filtration feed tank to inspect or clear sludge and collapsed after inhaling gas. A second worker, M. Sarathikumar, 25, entered to check on him and also lost consciousness. The third, P. Kaveri, went in to attempt a rescue and was overcome as well. The fourth team member raised the alarm.

Colleagues and the factory safety team pulled the three men out and gave first aid at the on-site occupational health center. They were then taken by ambulance to a private hospital in Hosur, where doctors declared them dead on arrival. The bodies were sent to the Government Medical College Hospital in Krishnagiri for post-mortem examination. The dead came from villages in Dharmapuri district. Police said the cleaning work is carried out about once every two months on a rotating basis.

Safety questions and official response

Krishnagiri district collector C. Dinesh Kumar said proper safety measures were apparently not in place during the operation. He asked why the workers entered the confined tank at all, noting that sludge clearing can normally be done from outside through a trapdoor. Police are examining whether a chemical powder used to control odor in the tank may have reacted with stagnant residue to release the toxic gas. Investigators are also looking at adherence to confined-space protocols, the protective equipment issued and how the contract workers were supervised.

Tamil Nadu's industries minister, Virudhai Magal Keerthana, offered condolences to the families and said the district administration had been instructed to provide assistance. She said the incident would be investigated and action taken based on the findings, adding that worker safety and dignity must remain paramount. Tamil Nadu Pollution Control Board officials were expected to inspect the site. More than 1,500 employees work at the facility across different shifts, and production was reportedly unaffected because the factory was closed for festival holidays at the time.

The effluent treatment facility is operated by Nalco Water, a subsidiary of the US-based Ecolab, and the four-member team was engaged through a contractor for routine maintenance. The identities of those involved have been reported with minor differences in age and spelling across accounts.

What it means for plant work

The deaths have renewed attention on industrial safety procedures for wastewater and effluent systems inside large electronics plants. Confined-space entry, gas testing and rescue readiness are standard parts of maintenance work in water and waste management operations, and the case has focused scrutiny on how routine tasks are handed to contract crews. For workers in plant maintenance, the incident underlines how far the responsibility for safe entry procedures extends beyond the immediate crew to site operators, contractors and equipment owners.

The case also puts a spotlight on the labor arrangements behind India's expanding electronics manufacturing base, where third-party contractors supply cleaning and upkeep teams on rotating schedules. Analysts have noted that rapid capacity growth in the sector depends on safety systems keeping pace with production volumes.

Next, investigators are awaiting post-mortem results to establish the exact cause of death. The district inquiry is expected to report on whether entry permits, gas monitoring and rescue equipment met requirements, and whether any lapses lead to penalties. The pollution board's inspection and any findings directed at the site operator or its contractors will be watched by unions and safety specialists as a test of how firmly confined-space rules are enforced in Tamil Nadu's industrial belt.