Last Updated on October 7, 2026 by Jeff Tomas
CHIANG RAI – Local community groups in northern Thailand are taking a firm stand against severe cross-border river water pollution. A major public forum will take place next Monday in the border town of Mae Sai. The primary goal is to address the growing heavy metal crisis affecting vital local rivers.
The civic network protecting the Kok, Sai, Ruak, and Mekong rivers is leading this crucial event. Government officials, politicians, academic experts, and local farmers will gather to find practical, long-term solutions. They urgently hope to stop the dangerous toxic waste flowing across the Thai-Myanmar border.
Key Takeaways
- Public Forum: A major meeting on border river pollution is scheduled for October 12 in Mae Sai.
- Dangerous Toxins: Recent water quality tests reveal highly unsafe levels of arsenic and lead in the Sai River.
- Myanmar’s Role: Environmental officials in Myanmar have recently started testing water quality on their side of the border.
Dangerous Toxins Found in the Water
Since early 2025, Thai environmental control experts have tested the Sai River on 22 separate occasions. Alarmingly, every single test has shown dangerous levels of heavy metal pollution in the water supply. The most recent quality checks discovered shockingly high amounts of toxic arsenic and lead.
At the Ban Hua Fai testing spot, arsenic reached a dangerous 0.284 milligrams per liter. Meanwhile, lead levels in the same location hit a troubling 0.266 milligrams per liter. These numbers are drastically higher than the safe limits of 0.01 for arsenic and 0.05 for lead.
Testing teams found similarly high pollution levels near the Second Thai-Myanmar Friendship Bridge crossing. Another water testing site at Ban Pa Sang also reported highly dangerous toxin levels recently. This ongoing cross-border pollution issue poses a massive threat to local public health and farming.
Myanmar Joins the Water Testing Efforts
Meanwhile, government officials in neighboring Myanmar are also beginning to take action on this issue. Their environmental teams are actively collecting water samples from six different locations in Tachileik. They are pulling these crucial water samples directly from the Sai, Ruak, and Mekong rivers.
These water samples will go to a laboratory in Taunggyi for careful scientific analysis. Local news reports suggest that Myanmar plans to test the river water once every month. However, it currently remains unclear if they will share these final test results with the public.
This cross-border environmental crisis absolutely requires strong teamwork from both neighboring countries to fix. The upcoming public forum in Thailand represents a critical step forward for the entire region. According to a recent report by MGR Online, this meeting brings all key players together.
A Community Effort for Clean Rivers
The scheduled public forum on October 12 will welcome many important voices from the community. Representatives from pollution control, agriculture, and public health departments will attend to share their knowledge. Local residents from severely affected areas like Tham Pha Chom and Koh Sai will also speak.
Top regional politicians and highly respected academics are joining the crucial environmental conversation too. Members of Parliament and university experts will share their valuable insights on the pollution crisis. Non-profit organizations that track water quality will offer their continued support and data as well.
Having clean and safe water is absolutely essential for the health of these border towns. This combined community effort shows a strong, unified desire to fix a very serious problem. Hopefully, this major gathering will successfully pave the way for a safer, cleaner river system.
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