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 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 Haggs adit, an abandoned mine water drainage tunnel.
To improve the environment for people and wildlife, the Coal Authority and Environment Agency are developing a treatment scheme to remove the metals from the Haggs adit mine water before they get into the river.
Following discussions with the public and other stakeholders, we submitted a planning application to build the treatment scheme on land between Blagill and Nentsberry in Cumbria.
Planning permission was granted by Cumbria County Council in June 2019. You can look through the planning application on the Cumbria County Council website, using the reference: 3/18/9001.
Installation of a pipeline under the A689 from Site 38 toward Haggs adit. View Nent Haggs mine water treatment scheme maps. The main will be installed to the eastbound carriageway and the works will require 100m sections of 3-way temporary traffic signals, which will be maintained 24 hours a day, 7 days a week. The carriageway will be reinstated as works proceed and surface drainage improvements will also be carried out.
If the weather allows, we may continue work between January and March 2021 to try to shorten the overall time to build the scheme. We will provide information about this work and the construction programme from April 2021 before it starts.