Overview
- The Environment Agency says specialist teams collected samples, detected a possible source and stopped further discharge after foam appeared in central Thetford on Saturday.
- Officers reported small dead fish and fry where the foam was present, with impact surveys planned once the pollutant clears.
- The agency describes the pollutant as unknown and expects the visible foam to dilute naturally, warning that additional plumes may travel downstream.
- Norfolk Fire and Rescue attended alongside the Environment Agency, and the public was advised to avoid the water and keep pets out.
- Anglian Water said the incident involves a third party and not its assets, and officials noted a similar unresolved foam event on the Thet in December 2024.