Zambia's Acid Spill Crisis: Human Rights Abuses in Copper Mining Region

The Zambian authorities are faced with a severe health crisis after a dam burst in February 2025, releasing acidic effluent into a river in the Copperbelt province, contaminating water and soil with pollutants from Chinese mining company Sino-Metals Leach Zambia. The acid spill has led to the deaths of livestock, burned crops, and wiped out livelihoods of local farmers, while residents suffered from headaches, coughs, diarrhea, and muscle cramps. Human Rights Watch is urging the government to investigate the health hazards and take comprehensive action to prevent further harm.

Key Takeaways:

• The acid spill in February 2025, caused by a dam burst in Chambishi, Copperbelt province, released acidic effluent into the Kafue River's watershed, contaminating water and soil with pollutants from Chinese mining company Sino-Metals Leach Zambia.
• At least 500 farmers were affected by the pollution, with many complaining of health issues such as headaches, coughs, diarrhea, and muscle cramps.
• The Zambian government has denied that the acid spill poses a serious health risk, stating that laboratory results show that the pH levels have returned to normal and heavy metal concentrations are decreasing.
• However, environmental activists reported that community members continued to complain of health issues, and some said they had not received the promised compensation.
• The Zambia Environmental Justice Coalition expressed concern over the scale of the disaster and the long-term impact on affected communities, urging the government to renegotiate compensation agreements to promote intergenerational justice and restore livelihoods.
• Mining has caused other serious environmental and health harm in Zambia, including severe lead poisoning among residents in Kabwe, Central province.
• The Zambian government has the obligation to protect the right to health and the right to a healthy environment, guaranteed by the Environmental Management Act, international laws, and regional human rights treaties.
• Donor governments are urged to support Zambia in achieving this through cooperation and support.

Statistics:

• 500 farmers were affected by the pollution.
• 24 different heavy metals were found in water samples from the area of the acid spill, 16 of which exceeded the World Health Organization's threshold values.
• High exposure to these metals can pose serious health hazards, especially for children, older people, and pregnant women.
• The US government ordered the immediate evacuation of all US government personnel from areas affected by the acid spill.
• The Zambian government has used lime to reduce acidity levels in the affected waterways.

Sources:

• Human Rights Watch: "Zambia's Copper Mining Pollution: A Health Emergency" (February 18, 2025)
• Finnish Ministry of Foreign Affairs: Travel advisory on Zambia (August 2025)
• US government: Order for immediate evacuation of US personnel from areas affected by the acid spill (August 6, 2025)
• Zambia Environmental Justice Coalition: Statement on the acid spill and its impact on affected communities (August 2025)
• International Covenant on Economic, Social and Cultural Rights: Article 12 on the right to the highest attainable standard of health
• African Charter on Human and Peoples' Rights: Article 16 on the right to health