Arsenic Levels Exceed Safety Standards in Chiang Rai Farmland
Preliminary findings indicate that 20% of agricultural soil in key Chiang Rai river basins contains arsenic levels surpassing national safety standards.
According to a report from Khaosod English published on October 10, 2026, preliminary soil testing in the Kok, Sai, and Ruak river basins of Chiang Rai has revealed concerning environmental data. The Chiang Rai Land Development Station reported that 20% of the agricultural soil samples tested exceed the arsenic limits established by the Department of Land Development. Furthermore, an additional 50% of the tested land has been flagged as requiring ongoing monitoring.
For residents and those involved in local agriculture, these findings highlight potential long-term concerns regarding soil quality and food safety in the region. Arsenic contamination in farmland can potentially impact crop safety and water quality, though the specific implications for local produce and human health are still being evaluated by authorities.
Parinyanon Thongkham, director of the Chiang Rai Land Development Station, released these initial findings to bring attention to the state of the soil in these river basins. As of now, the full extent of the contamination and the specific mitigation strategies that may be implemented remain to be confirmed. Residents and visitors are advised to monitor official updates from the Department of Land Development for further guidance on agricultural safety and environmental health in the affected areas.
