A troubling wave of fish deaths in the Sissili River in the Builsa South District has prompted an investigation by veterinary and fisheries authorities, with preliminary findings pointing to agrochemical pollution and illegal mining—commonly known as galamsey—as the likely causes.
The alarming sight of dead fish floating on the surface of the river triggered immediate concern among residents and regional authorities. In response, a research team, including experts from the Fish Health Unit of the Northern Sector Veterinary Services Directorate and the Fisheries Commission, was dispatched to the scene to conduct field and laboratory examinations.
Dr. Standley Hughes-Obresi, who led the investigation, briefed the Upper East Regional Minister, Donatus Akamugri Atanga, on the disturbing discoveries made so far. According to Dr. Hughes-Obresi, empty agrochemical containers were found along the riverbank, raising suspicions of runoff contamination. Additionally, evidence of mining activities upstream—potentially illegal—was also observed.
Post-mortem examinations on the fish revealed multiple signs of contamination. “Almost all the fish had liver lesions. We also found abnormal frothy material in the intestines and hemorrhaging in the testes,” Dr. Hughes-Obresi reported. He explained that such symptoms strongly suggest exposure to harmful substances, particularly agrochemicals or heavy metals, likely mercury.
Preliminary laboratory tests by the Ghana Standards Authority confirmed traces of mercury in water samples taken from the river. Further tests on tissue samples are still ongoing to confirm the presence of additional toxins. While the source of the contamination remains under investigation, the possibilities range from indiscriminate use of agrochemicals near the river to illegal mining activities that introduce heavy metals into the ecosystem.
Dr. Hughes-Obresi warned of the grave health risks associated with mercury exposure. “If it is indeed from galamsey activities, then the danger is long-term. Continuous exposure can lead to cancers and even congenital malformations,” he cautioned. He called for strict regulation of agrochemical usage near water bodies and sustainable mining practices to mitigate environmental degradation.
On his part, Upper East Regional Minister, Donatus Akamugri Atanga, praised the technical team for their swift response and urged immediate community sensitization to prevent further harm. “If I were walking past and saw those fish, I might have picked them up thinking they were a gift from nature. But clearly, they pose a serious health threat,” he remarked.
The minister also emphasized the need to share findings with neighbouring regions, particularly the North East Region, which also shares the Sissili River. He pledged the support of the Regional Coordinating Council to disseminate information and support ongoing investigations.
“We must educate residents on the risks of consuming fish under such circumstances. This is not just a regional issue; it’s a national concern,” he said, urging that the final investigative report be made available to guide broader preventive measures.
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