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Arsenic exceeds safety limit in Kok, Sai rivers
Post Reporters, Published on 15/02/2026
» Arsenic levels exceeding the safety threshold of 0.01 milligrammes per litre (mg/l) have been detected in parts of the Kok River and its tributaries, says the Pollution Control Department's (PCD) 15th report on water and sediment quality.
Trouble beneath the calm surface
News, Post Reporters, Published on 06/05/2025
» Under the scorching sun, the Kok River glimmers as it winds its way through the northern provinces of Chiang Mai and Chiang Rai, before flowing into the Mekong River. Once a lifeline for local farms, fisheries, and tourism, the river is now a source of fear and uncertainty.