Research and analysis

Caplecleugh mine water treatment scheme: reducing pollution from historical metal mining

Background and project information about how the Coal Authority and Environment Agency plan to reduce pollution from historical metal mining in the North Pennines.

Applies to England

Documents

Environmental Impact Assessment Scoping Opinion report submitted to Cumbria County Council - this contains information on ecological surveys carried out up to June 2019

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Response from Cumbria County Council to the request for a Scoping Opinion

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Details

Caplecleugh mine water treatment scheme project is part of the Water and Abandoned Metal Mines programme that aims to tackle water pollution caused by historical metal mining.

Monitoring by the Environment Agency shows that the River Nent is the second most metal polluted river in England.

This pollution by cadmium, lead and zinc comes from several different sources and the effects on water and sediment quality, and aquatic life can be seen for 60km along the River South Tyne and in the Tyne Estuary.

One of the most significant sources of pollution is the Caplecleugh Level, an abandoned mine water drainage tunnel or adit.

The Caplecleugh Level

The Caplecleugh Level

Published 5 July 2021