Contact details
The site is operated by the Mining Remediation Authority as part of the Water & Abandoned Metal Mines (WAMM) Programme. The WAMM Programme is a partnership between the Mining Remediation Authority, the Environment Agency and Defra (Department for Environment, Food and Rural Affairs).
You can contact us by:
Email: nent@miningremediation.gov.uk
Phone: 0345 762 6848
Post: WAMM Programme – Nent, 200 Lichfield Lane, Mansfield, Nottinghamshire, NG18 4RG.
In case of emergency, please contact: 0800 288 4242
In line with the approved planning permission the scheme started operating in September 2024 with just one of its three treatment ponds operational. In October 2025 all three treatment ponds were operational.
March 2026 update
You can find a full copy of our March 2026 update in Latest Communications
The treatment scheme is operating fully and performing very well
All three ponds are operating, removing the majority of the harmful metals (zinc and cadmium) from the mine water. There have been no reports of odours.
Treatment trials at Nent Haggs mine water treatment scheme site
In January we advised that short-term trials of an alternative treatment technology would be commencing on site in February for a couple of months, these are now underway. This trial is not investigating an alternative to the Nent Haggs treatment pond approach but is part of ongoing WAMM Programme research into various potential treatment technologies.
Restoration of the former construction compound
Work has begun to restore the former construction compound across the road from the Nent Haggs mine water treatment scheme back to agricultural land in line with the agreement we have with the landowner. The initial phase of work has finished and the team will return in spring when the ground is less wet to complete the works by placing top soil.