Recent research conducted by scientists from the University of Lubumbashi in the Democratic Republic of Congo (DRC) has revealed alarming levels of toxicity in river water near some of the country’s largest copper and cobalt mines.
The findings, commissioned by UK-based corporate watchdog RAID and Congo’s African Resources Watch, highlight potential health risks posed by acidic water contamination.
The preliminary report indicates that water samples from four rivers near major mining sites tested “hyper-acidic” or “very acidic,” rendering them unsuitable for supporting aquatic life and potentially hazardous to human and animal health.
Congo’s mining industry relies heavily on acid for ore processing, and companies are obligated by mining laws to prevent toxic wastewater from polluting groundwater and local waterways.
The research, spanning 19 months and conducted in 25 villages and towns near five major mines, suggests that over a century of mining activity has rendered key water sources unusable, with pollution levels on the rise.
Local communities reported significant declines in agricultural yields and fish catches in recent years, underscoring the far-reaching impacts of water contamination.
Despite Congo’s emergence as a leading copper and cobalt producer, accounting for 70% of the world’s cobalt supply, concerns over environmental degradation persist.
The study examined communities near mines owned by Glencore, Eurasian Resources Group (ERG), Zijin Mining Group, and CMOC Group, all of which acknowledged historic pollution as a contributing factor to water contamination.
In response to the findings, mining companies emphasized their commitment to environmental compliance and pollution prevention measures.
Glencore, CMOC, ERG, and Zijin highlighted their adherence to Congolese regulations and international best practices for monitoring water quality and minimizing environmental impacts.
Despite these assurances, local doctors and nurses reported an increase in health issues, including skin, eye, and respiratory problems, as well as reproductive health issues among women.
While direct links to water pollution were not confirmed, medical practitioners noted potential correlations.
RAID and African Resources Watch have called for immediate action from mining companies to provide clean drinking water to affected communities and adhere to Congo’s environmental laws.
However, enforcement of these regulations has been challenging due to limited resources and expertise within the government’s Mines Ministry.
As concerns over water contamination persist, urgent measures are needed to safeguard both environmental and public health interests in Congo’s mining regions.
