And they claim the new figures are "clear cut" evidence that there was sewage present in the River Foss at the time several fish were found dead.
EXPERTS say they discovered one of the highest concentrations of paracetamol ever recorded in a river globally in the River Foss in York.
And they claim the new figures are "clear cut" evidence that there was sewage present in the River Foss at the time several fish were found dead.
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