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Microplastic pollution widespread in British lakes and rivers – new study

news release
  • Inland waterways must be routinely monitored for microplastic pollution

New research [1] by Bangor University and Friends of the Earth has found microplastic pollution in some of Britain’s most iconic and remote rivers and lakes.

The study, believed to be the first of its kind, looked at ten sites – including lakes in the Lake District, waterways in the Loch Lomond and Trossachs National Park, a wetland and Welsh reservoir – and found microplastics in all of them.

Friends of the Earth and Dr Christian Dunn, of Bangor University (who led the research) say the findings suggest that microplastics should now be considered as an emergent contaminant – and that routine monitoring of all UK waters must now take place.

Friends of the Earth is also urging MPs to support new legislation [2], currently before Parliament, to phase out plastic pollution within 25 years – including an end to non-essential single-use plastic by 2025.

Using a fluorescence lighting system, researchers were able to identify and count microplastic pollutants (less than 5 mm in size) per litre of water, such as plastic fragments, fibres and film.

The preliminary findings revealed microplastic pollution levels ranging from over a 1,000 pieces of plastic per litre in the river Tame in Greater Manchester [3], to 2.4 pieces per litre in Loch Lomond.

Last year, a report by Eunomia for Friends of the Earth [4], estimated that huge quantities of microplastic pollution are entering UK waterways from a number of sources every year. The key sources of pollution include car tyres (7,000-19,000 tonnes), clothing (150-2,900 tonnes), plastic pellets used to make plastic items (200-5,900 tonnes) and paints on buildings and road markings (1,400-3,700 tonnes).

Friends of the Earth and Dr Christian Dunn say further work is now essential to fully investigate any health risks from microplastics – to humans and ecosystems – so that “safe” levels can be ascertained, and removal and mitigation processes can be put in place.

The waterways surveyed (including pieces of plastic per litre of water) were:

  • River Thames, London (84.1)
  • Chester reedbed (7.6)
  • Ullswater, Lake District (29.5)
  • River Irwell, Salford, Greater Manchester (84.8)
  • River Tame, Tameside, Greater Manchester (>1,000)
  • River Blackwater, Essex (15.1)
  • Falls of Dochart, Loch Lomond & Trossachs National Park (3.3)
  • Loch Lomond, Loch Lomond & Trossachs National Park (2.4)
  • Afon Cegin – river; North Wales (76.9)
  • Llyn Cefni – reservoir; Anglesey, Wales (43.2 )

Dr Christian Dunn, of Bangor University, said:

“It was more than a little startling to discover microplastics were present in even the most remote sites we tested, and quite depressing they were there in some of our country’s most iconic locations. I’m sure Wordsworth would not be happy to discover his beloved Ullswater in the Lake District was polluted with plastic.

“These initial findings, from our team at Bangor University with Friends of the Earth, show that we have to start taking the issue of plastic in our inland waters seriously.

“Plastic is polluting our rivers, lakes and wetlands in a similar way as pollutants such as so-called ‘emerging contaminants’ like pharmaceutical waste, personal care products and pesticides.

“As with all emerging contaminants we don’t yet fully know the dangers they present to wildlife and ecosystems, or even human health, and to what levels they occur in all our water systems.

“But it’s now clear that microplastics should be considered a serious emerging contaminant and there needs to be a concerted effort to regularly monitor all our inland waters for them.

“Our method provides a straightforward and low-cost way of doing this so we now need to roll it out and see if our preliminary results are just the tip of the iceberg.”

Julian Kirby, plastics campaigner at Friends of the Earth said:

“The widespread contamination of our rivers and lakes with microplastic pollution is a major concern, and people will understandably want to know what impact this could have on their health and environment.

“Plastic pollution is everywhere – it’s been found in our rivers, our highest mountains and our deepest oceans.

“MPs must get behind new legislation, currently before Parliament, that would commit the government to drastically reduce the flow of plastic pollution that’s blighting our environment.”

Although there have been a number of studies on plastic pollution in the marine environment and some on the sediment of waterways, less research has been conducted on microplastic pollution in actual water samples from inland systems in the UK. The methodology used in this study offers a simple low-cost way of collecting and analysing samples, allowing regular nationwide monitoring of waterways.


For more information contact the Friends of the Earth press office on 020 7566 1649 / 07718 394786 (out of hours – please do not text this number) or by emailing

Editor’s notes:

  1. The results are preliminary findings which will form part of a scientific paper to be sent for peer-review. The research was led by Dr Christian Dunn, a senior lecturer in the School of Natural Sciences at Bangor University, in North Wales, UK.
  2. The Phase-out of Plastic Pollution Bill, which has been drawn up by Friends of the Earth and the National Federation of Women’s Institutes (NFWI), was presented to Parliament yesterday by Alistair Carmichael MP, with support from a cross party group of MPs. The Bill would set a statutory long-term target to significantly cut plastic waste and pollution by 2042 in particular by phasing out all but the most essential uses of plastic. The bill also requires plastic waste and pollution to have been substantially and progressively reduced before this date, including a 2025 target to end non-essential single-use plastics. The Bill is due to have its second reading next month.
  3. Last year the University of Manchester examined the microplastics in river sediments from 40 sites across Greater Manchester. One site on the River Tame at Denton, had the highest levels so far recorded anywhere in the world.
  4. Car tyres responsible for thousands of tonnes of UK plastic pollution | Friends of the Earth press release.
  5. Friends of the Earth is an international community dedicated to the protection of the natural world and the wellbeing of everyone in it. We bring together more than two million people in 75 countries, combining people power all over the world to transform local actions into global impact. For more information visit: follow us at @friends_earth, or like our Facebook


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