NWU Researcher Raises Alarm Over Rising Pollution in Vaal River

A North-West University (NWU) researcher, Professor Wynand Malherbe, has warned that increasing pollution in the Vaal River poses a serious threat to aquatic life and the region’s biodiversity.

Malherbe, who has been studying the ecological condition of the river around the Vredefort Dome, said there are growing signs of environmental stress despite some species still surviving.

According to him, while larger fish can still be found and breeding continues, there has been a noticeable decline in the number of fish and smaller organisms such as invertebrates, which are vital to the river’s ecosystem.

He attributed the deterioration largely to human-related pollution, including the discharge of untreated waste into the river.

“There is a significant amount of man-made effluent entering the river, and this is likely a major factor behind the drop in biodiversity and fish populations,” Malherbe explained. “Although the system is still functioning, there is clear cause for concern.”

He cautioned that without urgent intervention, the river’s ecosystem could face severe damage or even collapse.

Malherbe stressed the need for authorities and stakeholders to act quickly to reduce pollution levels and protect the long-term health of the Vaal River, which supports both wildlife and surrounding communities.