Chiang Rai—Recent tests on sediment samples from the Kok River in Chiang Rai and Mae Ai District, Chiang Mai, have shown that several heavy metals, especially arsenic, are above accepted limits. Experts warn that these contaminants could enter the food chain and pose health risks to people who eat local fish. Authorities have now ordered […] The post Sediment Tests in the Kok River Reveal High Levels of Heavy Metals and Arsenic first appeared o…
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