Three contract workers have died in an accident at Tata Electronics' facility at Hosur, Tamil Nadu, which makes components for Apple's iPhones.
What Happened at the Tata Electronics Hosur Plant
District official Dinesh Kumar told Reuters that the three workers were carrying out maintenance on an effluent treatment plant at the Tata facility. The treatment plant is operated by Nalco Water, a third-party contractor.
The deaths occurred when the workers inhaled gas while inspecting an external nano-filtration tank, which is used to treat wastewater.
Officials have not shared the identities of the workers or further details about the type of gas involved.
According to the report, Apple's team is visiting the plant to help with the ongoing investigation. Apple did not respond to Reuters' request for comment. Production at the facility was not affected, as the plant was closed this week for Deepavali.
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Second Controversy for the Facility This Year
This isn't the first time the Hosur facility has come under scrutiny this year. In June 2026, the Tamil Nadu Pollution Control Board looked into allegations that wastewater from the plant had contaminated water used on nearby farmland.
Tata later said the regulator had dropped further action after the company addressed its concerns. Additionally, its own independent testing showed that the plant was operating within the rules.
However, Reuters reported just days later that local health officials were still looking into complaints from farmers in the area.
The latest incident adds to those concerns, since it look place at the same wastewater treatment system that has been at the centre of the earlier complaints.
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Why the Hosur Plant Matters for Apple
Tata Electronics has become one of Apple's most important suppliers in India. It makes iPhone components and also handles a significant share of iPhone assembly in the country.
With Apple shifting more of its manufacturing away from China, India now produces roughly a quarter of the world's iPhones.
We will update this story as Tata Electronics, Apple or Tamil Nadu authorities share more details about the investigation.
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