Workers who died after inhaling toxic gas did not wear respirators or follow safety protocol, inspector testifies

A coroner's court in Singapore heard that two workers died from hydrogen sulphide inhalation at a waterworks facility after failing to follow safety protocols. Investigations revealed the workers did not wear respirators and failed to operate ventilation equipment before entering an enclosed space.
Why it matters
The incident underscores the critical importance of workplace safety regulations and the fatal consequences of bypassing established industrial protocols.
Mr Srinivasan Sivaraman and Mr Izzat Naqiuddin Dowod died in May 2024 after inhaling hydrogen sulphide, a by-product of the water treatment process.
An aerial shot of Choa Chu Kang Waterworks. (Photo: PUB website)
Ang Hwee Min 02 Oct 2026 03:28PM Bookmark Bookmark Share WhatsApp Telegram Facebook Twitter Email LinkedIn Set CNA as your preferred source on Google Add CNA as a trusted source to help Google better understand and surface our content in search results. Read a summary of this article on FAST. Get bite-sized news via a new cards interface. Give it a try. Click here to return to FAST Tap here to return to FAST FAST SINGAPORE: Two workers who died after inhaling toxic gas entered an enclosed passage at PUB’s Choa Chu Kang Waterworks without respirators and without following safety protocol, the coroner’s court heard on Friday (Oct 2).
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