Earthwatch said 35 trained “citizen scientists” tested freshwater sites and samples were analysed for 33 elements, including 29 metals and metalloids, using field-based citizen science kits and laboratory analysis.
It said at every site at least one metal or metalloid was detected at a “concentration above its predicted no effect concentration (PNEC) for freshwater habitats – the level below which adverse effects on aquatic ecosystems are not expected”.
Dr Sasha Woods, director of science and impact at Earthwatch Europe, said: “By working with the community in Corby, we’ve been able to gather a detailed snapshot of freshwater metal pollution across the town.
“The findings indicate that some metals are present at levels that could pose a risk to aquatic life, particularly in areas close to known historic waste sites.”
The charity said the report “complements what we already know about metals pollution in Corby” and highlighted that further investigation was needed.
It said the report did not “assess risks to human health”.
It added that further monitoring and repeat testing in different weather conditions would help build a clearer picture.
