JUNE 2026 UPDATE:
During September 2025, Whitehaven Harbour experienced temporary relief from the discoloured water due to work taking place by Network Rail (NR) inside Bransty Tunnel and treatment equipment installed to support the necessary maintenance.

NR had been granted temporary permissions by the regulators to carry out the work. Once the programme of works was complete, it was confirmed that they would remove the filtering equipment as it would no longer be deemed necessary by the relevant authorities and regulators.


However, in early October 2025 the work had to be paused, following ground investigations and the need for further work being identified, ahead of the final delivery phase. The filtering equipment was turned off until needed again, and the harbour returned to its orange/brown colour. 

We all hoped NR could leave the equipment in place and running permanently, but ongoing maintenance and enormous costs associated with the daily operation, and the likely open-ended timeline, meant it was impossible for them to fund through their agreed budget.

There are also significant environmental assessments and licences that would have to be explored for this type of equipment to be in place permanently, which would mean additional money plus more delays while the data was gathered, analysed and considered within the relevant Government departments.

As of June 2026, specialist members of the Harbour Water Task Force are continuing to meet, both at ministerial level and elsewhere, and the wider task force is kept updated by local MP Josh MacAlister's office, as attempts continue to try to confirm a long-term solution.


A possible diversion was identified and a formal process to apply for the necessary permissions was started, but environmental modelling then suggested the preferred option would not be suitable after all. Further meetings were called to re-consider the possible alternatives, and the MP continues to try to identify ways to secure the necessary funding - which could run into tens of millions of pounds.

READ ON FOR MORE ABOUT THE BACKGROUND TO THIS ISSUE AND STORY SO FAR...

The discoloured water in Whitehaven Harbour was first reported in November 2022. The contaminated water is getting into Queens Dock through something called a culvert

A culvert is a tunnel or pipe that allows water to flow under things like roads and railways. In Queens Dock, the culvert is releasing water from Bransty Beck and a drainage system in Bransty railway tunnel.  
 
Bransty railway tunnel takes trains underground between Corkickle and Whitehaven. In recent years, this tunnel has started to flood. Tests have shown that the floodwater has iron ochre in it, which makes sense because the tunnel runs through areas where coal is found.
 
As soon as the contaminated water began to arrive in the harbour, we started working with Whitehaven Marina Ltd, the Environment Agency, Network Rail, the then Coal Authority (now renamed the Mining Remediation Authority, as of November 2024), Cumberland Council and our local MP to test the water, find the source and look for a way to stop it. 
Why is this happening now?
The geology of west Cumbria is complex. Any water running through it (in a tunnel, drain or similar) may pick up metals and colour. This means we may never fully understand why this is happening now. 

We know the contaminated water is coming from Bransty railway tunnel. One possible explanation is that water has been getting in there for a long time. Experts believe that the stones used in the railway, called ballast, might have helped filter the contaminated water. But after a while, the ballast got blocked and worn, making it less effective. 

Network Rail has been exploring ways to help fix this by replacing the ballast. As of August 2025, a proposed programme of works on the track and ballast had been identified.

How will you find out where the contaminated water is coming from?  
We have received many messages, emails, and calls from the people of Cumbria. They alerted us to areas with similar orange water, hoping they could be the source. The relevant authorities tested these sources. The results ruled them out because the water's composition is different.

Network Rail, the Environment Agency, and the Mining Remediation Authority have investigated how and where water is entering the Bransty railway tunnel. To date, all investigations have been inconclusive. 

Why can’t Network Rail stop the water coming into Bransty tunnel? 
Network Rail is funded to deal with the impact of the contaminated water on the railway only. It is focused on delivering a safe and reliable railway for the people of Whitehaven, and not making the situation worse when work is carried out.

Network Rail are focused on making sure the railway can continue to run, and have been planning a full renewal of the track and drainage system during 2025 and 2026. Work began in August 2025.

Why can’t the culvert be blocked up or easily diverted out to sea? 
The culvert carries a natural watercourse from Bransty Beck. It cannot be blocked, as this would cause flooding elsewhere.

A diversion of the water would need a lot of engineering and treatment. It would also be expensive and need regulatory approval and/or licences. This option is being explored, but is taking time and there's potentially still a long way to go, including detailed modelling, ground investigations and a number of permissions yet to be secured.
What can be done to sort this out?
A task force was set up in March 2024. It includes representatives from key organisations and affected community groups. It also includes the agencies involved in testing and investigating the contaminated water.  

Former MP Trudy Harrison brought the group together. It is now led by Whitehaven and Workington’s MP, Josh MacAlister.  

Investigations have been looking into finding a way to clean or filter the water running out of the tunnel. After much research, potential treatments were identified. 

Researchers have been conducting further studies to understand if they will work. Any potential treatment could need Government approval and possibly licences. This includes where to take waste after any treatment. 

To make this happen, data has had to be gathered and the evidence looked at by experts, then costs would need to be determined and funding identified. All this is happening in the background but continues to take time.

When will this be sorted?
The task force is doing everything it can. However, all solutions that have been discussed so far are proving complex and taking time to develop satisfactorily for the relevant agencies and authorities to consider appropriately.

Whitehaven Harbour Commissioners know this is a challenging situation. Timescales are difficult to predict until anyone knows for sure what solution will be the right one for this particular issue, bearing in mind factors such as our location, access to funding, and potential licensing requirements.

Funding and permissions will take time to secure, and we can't change or control that, but thankfully our MP is at the forefront of attempts to tackle both of those.

Guided by experts with the necessary experience, we are confident it's possible to solve this. But at this stage no one is able to suggest any kind of timescale.

Is the water harmful to humans, wildlife or the ocean?
The Environment Agency tested the water in December 2022, not long after the discolouration was first reported. It found the water had increased metal levels. These levels are not believed to be harmful due to dilution in the harbour and estuary. 

Regulators monitor the situation regularly. Experts say the contaminated water won't harm the wider water quality or the flora and fauna. The usual wildlife still visits. There are fish in the water. Those that feed on them seem to be coping with the conditions. 

The Clean Rivers Trust says the contaminated water is harmful to the crustaceans that live in the sediments. Over time this will be a problem for the fish in the harbour as it removes their food source. 

They also warn that the iron hydroxides coating the harbour floor, although not poisonous to humans, should not be paddled in or ingested. Any mussels found on the hulls of the boats in the harbour should not be eaten. 

Whitehaven Harbour Commissioners are not experts in this area. We are guided by information and advice from government agencies and experts. 

We worry about the long-term effects on the environment, the community, and the town's prosperity. So, we continue to push for the urgent implementation of a permanent solution.

Josh MacAlister MP

Josh MacAlister is the Labour MP for Whitehaven and Workington, and has been an MP since 4 July 2024. MPs represent their local community’s interests and concerns in the House of Commons. MPs consider and can propose new laws as well as raising issues that matter to you in the House. MPs split their time between working in Parliament itself, working in the constituency that elected them and working for their political party.

Whitehaven Harbour Commissioners

Whitehaven Harbour Commissioners is a small not-for-profit organisation. They are responsible for protecting and managing the harbour, which is a Trust Port. This means no one owns it and a board of volunteers governs it. All of the money they make goes straight back into taking care of Whitehaven Harbour.

Whitehaven Marina Limited

Whitehaven Marina Limited is a private company. It runs the harbour's leisure and commercial facility. It is the Harbour Commissioners' tenant. The marina has 400 serviced pontoon berths and quay wall berths for larger boats. A 24/7 sea lock is accessible at almost all tides. There is also a modern boatyard and outside/undercover boat storage.

Cumberland Council

Cumberland Council is the local authority for Cumberland. It is a unitary authority, which means it’s a district council that also performs the functions of a county council. They are responsible for education, transport, planning, fire and public safety, social care, libraries, waste management, trading standards, rubbish collection, recycling, housing, and planning applications.

Whitehaven Town Council

Whitehaven Town Council is the local council for the parish of Whitehaven. They can help on a number of local issues, like providing: allotments, public clocks, bus shelters, community centres, play areas and play equipment, grants to help local organisations, consultation on neighbourhood planning. They also have the power to issue fixed penalty fines for things like: litter, graffiti, fly-posting, dog offences.

Network Rail

Network Rail is the owner and infrastructure manager of most of the railway network in the UK. Network Rail is a non-departmental public body of the Department for Transport. They repair and develop the railway infrastructure in England, Scotland and Wales. They look after 20,000 miles of track, 30,000 bridges, tunnels, and viaducts, and thousands of signals, level crossings, and stations. They also manage 20 of the country’s largest stations.

The Coal Authority

The Coal Authority is an executive non-departmental public body, sponsored by the Department for Energy Security and Net Zero. They manage the effects of past coal mining. This includes subsidence damage claims that are not the responsibility of licensed coal mine operators. It deals with mine water pollution and other mining legacy issues. The Coal Authority offers its skills to other government bodies, local governments, and businesses.

The Environment Agency

The Environment Agency is an executive non-departmental public body, sponsored by the Department for Environment, Food & Rural Affairs. In England they’re responsible for regulating major industry and waste, treatment of contaminated land, water quality and resources, fisheries, inland river, estuary and harbour navigations, conservation and ecology. They are also responsible for managing the risk of flooding from main rivers, reservoirs, estuaries and the sea.

Clean Rivers Trust

Clean Rivers Trust is a charity. It leads research on reducing pollution from abandoned mines in the UK, Europe, and beyond. The Trust has researched pollution, including contaminated water, across much of the country. They advise national and local governments, the Environment Agency, and special interest groups. They can also help concerned individuals.

Co-Lab Engineering

Co-Lab Engineering cuts time, risk, and cost for regulated industries. They do this by integrating people, processes, and technology. They are a local company based in Whitehaven. They work in the agriculture, renewables, and nuclear sectors.

Forth Engineering

Forth Engineering is a local engineering company that finds solutions to complex problems. They are based in Flimby and work within the following sectors: nuclear, oil and gas, marine, sub-sea and renewables.

Sellafield Ltd

Sellafield Ltd is a wholly-owned subsidiary of the Nuclear Decommissioning Authority and has offices based in Whitehaven. They clean up the country’s highest nuclear risks and hazards, safeguard nuclear fuel, materials and waste.


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