Investigations ongoing into foam found in River Thet
A thick white foam was reported in the river in the centre of Thetford
Last updated 19th Oct 2025
An investigation is underway by the Environment Agency after white foam appeared along the River Thet in the centre of Thetford.
It was reported on Saturday (18 October), with officials confirming the source had been detected and they had prevented further discharge.
An agency spokesperson also said the foam "will continue to travel down the river and be visible."
Norfolk Fire Service warned people not to enter, or allow their pets to enter the water.
In an update on X, the Environment Agency said: "We have taken samples and continue to investigation into its origins.
"We are expecting a second plume and there may be more foam as a result."