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Toxic Waste Found at Cumbria Beauty Spot
28 May
Summary
- Untreated construction waste identified in an embankment.
- Soil tests revealed lead levels over 20 times the limit.
- Environment Agency is investigating the protected site.

Toxic pollution has been uncovered at Demesne Marsh, a protected natural beauty spot situated on the banks of the River Eden in Cumbria. A BBC investigation revealed the presence of untreated construction waste within an embankment. Materials experts conducting tests on soil samples from the embankment indicated high concentrations of lead, with some results exceeding regulatory limits by over twenty times.
Demesne Marsh, cherished by locals, is part of the Solway Coast National Landscape and a Site of Special Scientific Interest, noted for its valuable bird life. Concerns have been voiced that toxic chemicals could be leaching into the environment. While indicative tests showed elevated lead, nickel, and plastic pollution, further comprehensive sampling is recommended for a clearer picture.
The owner of the land, Castletown Estate, has stated that any materials used in recent embankment works were "inert" and that identified waste items likely predated recent activities. Separately, the Environment Agency confirmed it is investigating the Demesne Marsh site following public reports. The agency is also looking into another site near Carlisle, where a permitted waste restoration project reportedly shows potential non-compliance with its permit.