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Science 15 Jun 2026

New microplastics research examines River Thames

Water samples are assessed for pollution levels and any impact climate pressures may be having on the river system.

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A new study into microplastic pollution in the River Thames has been launched by researchers at the University of East London (UEL) in an attempt to influence environmental policy and water quality. The samples will be assessed to see how pollution levels are changing and what impact climate pressures may be having on the river system. Some of the highest levels of microplastics for any river in the world have previously been recorded from the Thames. Devereux said: "The River Thames is one of the most internationally recognised urban rivers in the world, yet we are still learning about the scale and complexity of microplastic pollution within it. "This project is about providing robust scientific evidence that can support better environmental decision-making and help policymakers understand where interventions may be needed most." The research should indicate whether pollution has gone up or down and if the water quality needs to improve. Three litres of surface water will be collected from seven publicly accessible riverside locations along the Thames - Teddington, Westminster, St Katharine Docks, Limehouse, North Woolwich, Tilbury and Southend - before being filtered at a laboratory to capture tiny particles. The filters are then examined under a microscope, where researchers look for suspected microplastics and record their size, colour and shape.

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