# Thailand-Myanmar Kok River pollution management > Live situation record from CLSTR: https://clstr.news/situations/thailand-myanmar-kok-river-pollution-management > Updated: 2026-08-10T23:57:40.000Z. Sources: 4. Developments: 2. Thailand and Myanmar have established a Joint Working Group (JWG) to address toxic substances in the trans-border Kok River. Following an agreement signed by the Thai Ministry of Natural Resources and Environment, the JWG will implement a three-year water-quality management plan involving standardized sampling and at least two annual meetings. The cooperation also includes using satellite-based remote-sensing data to monitor mining-related pollution. Simultaneously, local communities have engaged in direct action to protest the contamination. Hundreds of farmers, fishers, and activists conducted a 68-kilometer march from Chiang Mai to Chiang Rai to demand accountability for unregulated gold and rare earth mineral mining in Myanmar. Protesters cited declining fish populations and risks to irrigation and domestic water safety. While government representatives met with demonstrators at Chiang Rai City Hall, protesters stated that no clear commitments or timelines for remediation were provided. ## Timeline ### 2026-08-10: Kok River communities march to protest mining pollution Activists marched 68km to Chiang Rai to protest toxic pollution in the Kok River caused by unregulated mining in Myanmar, threatening local livelihoods and ecosystems. 2 sources. https://clstr.news/cluster/kok-river-communities-march-to-protest-mining-pollution ### 2026-08-07: Thailand and Myanmar form joint task force to clean Kok River Thailand’s environment ministry and Myanmar have created a joint working group to tackle toxic pollution in the Kok River, launching a 1‑3‑year water‑quality plan and using satellite data for monitoring. 2 sources. https://clstr.news/cluster/thailand-and-myanmar-form-joint-task-force-to-clean-kok-river --- Cite as: Thailand-Myanmar Kok River pollution management. CLSTR, https://clstr.news/situations/thailand-myanmar-kok-river-pollution-management