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.
May 2026 update
You can find a full copy of our May 2026 update in Latest Communications
The treatment scheme is operating fully and performing very well
All three ponds are now operating so metals are being removed from all of the mine water flow most of the time (we expect to be able to treat all of the flow soon as we are currently restricted to 10 litres per second).
Between 1st January and 31st March 2026, the scheme has prevented 0.5 tonnes of zinc and cadmium from polluting rivers by treating over 66 million litres of mine water. On average, the scheme is removing about 90% of the zinc and cadmium from the mine water which is in line with our expectations.
There has been no odour nuisance from the scheme.
As part of the commissioning process, we continue to optimise how the scheme is operated so that it achieves the greatest environmental benefits in the most cost-effective way.
Treatment trials at Nent Haggs mine water treatment scheme site
The short-term treatment trials at Nent Haggs mine water treatment scheme site have now finished, and the associated equipment has been removed from site.
Restoration of the former construction compound
The former construction compound across the road from the Nent Haggs mine water treatment scheme is being returned to agricultural land in line with the agreement we have with the landowner. With dryer weather, our contractors will be on site to complete the works by placing topsoil.