Environmental Crisis: Mining Pollution Disrupts Thailand’s Kok River

The Kok River has long been a vital supporter of agriculture in northern Thailand, feeding crops like pumpkins, garlic, corn, and okra. Unfortunately, this once-pure waterway is now indicative of a significant environmental emergency.

Tip Kamlue, a farmer from Tha Ton, shares her lifelong reliance on the Kok’s waters for irrigation. Since April’s contamination warnings from officials, she and her fellow farmers are left to depend on groundwater. “It feels like a part of me is gone,” she lamented while observing the river that no longer provides safe water.

Recent findings have highlighted the gravity of the situation. More than 2,400 mines across mainland Southeast Asia, many of which operate illegally or without regulation, are believed to be discharging toxic substances such as cyanide and mercury into rivers. According to a study from the U.S.-based Stimson Center, satellite images reveal numerous mining sites extracting gold, nickel, copper, manganese, and rare earth elements into the Mekong basin.

The Mekong, Asia’s third-largest river, is essential for over 70 million people and is pivotal in the region’s agricultural exports. Once celebrated for its clean waters, experts warn the basin faces increasing threats due to inadequate environmental enforcement.

Of particular concern are the new rare earth mines in eastern Myanmar, adjacent to Thailand. Testing on the Kok River has shown significant levels of arsenic and heavy rare earth elements—dysprosium and terbium—often associated with gold and rare earth mining activities. This contamination is linked to operations supporting China’s production of magnets for electric vehicles, wind turbines, and defense technologies.

Amidst this turmoil, local farmers are growing increasingly desperate. Signs demanding a ban on mining operations still hang over Tha Ton’s bridges, symbolizing the community’s fight to rejuvenate their once-productive river. Tip Kamlue voices the hope that resonates among them: “I wish for the Kok River to return to its former glory—safe to eat from, bathe in, enjoy, and farm with.”