Effluents flowing through Sunnambu Odai in Erode in Tamil Nadu. | Photo Credit: GOVARTHAN M. Residents of Vairapalayam have alleged that untreated effluents from textile processing units continue to be discharged into Sunnambu Odai, which eventually merges with River Cauvery, raising serious concerns over public health and agricultural sustainability. According to residents, the drain, originally designated to carry household sewage, is frequently misused for releasing industrial effluents. They claim that the discharge is not restricted to late-night hours, as is often alleged in such cases, but occurs openly during the daytime as well. “We can see the change in the colour of the water and a strong, unpleasant odour spreading across the area,” a resident said. Locals further alleged that the drain carries toxic chemicals and hazardous substances from textile units, which ultimately mix with the river water. The Cauvery serves as a lifeline for irrigation in delta districts and is also a crucial source of drinking water supply for several parts of the State. Any contamination, residents fear, could have far-reaching consequences. Apart from Sunnambu Odai, effluents and domestic sewage are reportedly discharged into Perumpallam, Pichaikaranpallam and other drainage channels that flow into the river system. On March 13, 2024, Chief Minister M. K. Stalin had announced the establishment of sewage treatment plants within the Corporation limits to treat wastewater before its release into waterbodies. However, residents said the project is yet to take off, while pollution continues unabated, causing anxiety among residents and farmers. Published – February 14, 2026 05:42 pm IST Share this: Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on Facebook (Opens in new window) Facebook Click to share on Threads (Opens in new window) Threads Click to share on X (Opens in new window) X Click to share on Telegram (Opens in new window) Telegram Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Pinterest (Opens in new window) Pinterest Click to email a link to a friend (Opens in new window) Email More Click to print (Opens in new window) Print Click to share on Reddit (Opens in new window) Reddit Click to share on Tumblr (Opens in new window) Tumblr Click to share on Pocket (Opens in new window) Pocket Click to share on Mastodon (Opens in new window) Mastodon Click to share on Nextdoor (Opens in new window) Nextdoor Click to share on Bluesky (Opens in new window) Bluesky Like this:Like Loading... Post navigation Ajit Pawar death: Rohit Pawar writes to Amit Shah, Civil Aviation Minister, DGCA for plane crash probe Elephants destroy banana plants in Thalavadi Hills