Zambia: An Ecological Catastrophe After an Acid Spill in the Kafue River

A large-scale toxic spill

On February 18, 2025, Zambia was struck by a major environmental disaster. The collapse of an acid tailings dam belonging to a Chinese mining company caused millions of liters of toxic waste to spill into the Mwambashi River, a tributary of the Kafue, one of the country’s largest rivers.

Experts from Zambia’s Institution of Engineering estimate that over 50 million liters of waste containing concentrated acid, heavy metals and dissolved solids were spilled. This pollutant spread rapidly, affecting the ecosystem, fauna, flora and local communities. Traces of contamination were observed up to 100 kilometers downstream, raising concerns about the long-term consequences for the environment and local populations.

Severe impact on local communities

The consequences for local residents are dramatic. Chilekwa Mumba, an environmental activist, warns of the seriousness of the situation: “This is an ecological disaster with catastrophic consequences. Sino Metals has contaminated a river on which millions of people depend for their livelihood.”

The consequences for local agriculture are equally devastating. Contaminated soils have destroyed crops, and farmers have lost their source of income just months before harvest. “The local people have lost everything. They’re farmers, and we’re only two months away from harvest. Their crops are ruined, their investments wiped out,” laments Mumba.

Fish farmers saw their business disappear in a matter of hours. Juliet Bulaya, a local farmer, explains: “All my fish were swept away. I just stood there, helpless, wondering how I was going to get back the money I had invested in this project.”

A river transformed into an aquatic cemetery

The ecological consequences are devastating. Images taken after the incident show thousands of dead fish floating on the surface or washed up on the river banks. Witnesses describe a desolate landscape. Sean Cornileus, a local resident, said: “Before February 18, this river was a living, dynamic ecosystem. Today, everything is dead. It’s as if the river has ceased to exist. It’s unimaginable.”

On February 23, the Ministry of Fisheries and Livestock issued a warning against eating fish from the polluted Kafue River and its tributaries.

An attempt at repair, but an uncertain future

On February 19, the day after the disaster, the breach in the dike was closed, putting an end to the toxic waste spill. However, experts are questioning the true extent of the damage, both in human and environmental terms.

The future of the region is now uncertain. The economic impact could be considerable, having a lasting effect on farmers, fishermen and all the communities that depend on the Kafue River for their livelihoods.

Conclusion: The call for strict measures

This disaster underlines the need for greater control over mining practices in Zambia. The country, rich in natural resources, is also vulnerable to industrial abuse, particularly in the mining sector. Authorities and environmental associations are calling for a thorough investigation and strict measures to prevent such a tragedy from happening again.

Local populations expect urgent responses and sustainable solutions to preserve their environment and livelihoods.