Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, whether her Department has (a) commissioned and (b) reviewed research on the potential (i) environmental and (ii) health impact of (A) microplastics and (B) nanoplastics on (1) ecosystems and (2) food chains.

In 2022, Defra initiated a research project to investigate the risks of intentionally added microplastics, which reviewed the emissions from microplastics, and the risks they pose both to human health and the environment. Earlier this year, we published this Option Appraisal for Intentionally Added Microplastics, which provides a welcome addition to our sum of knowledge on the options to protect human health and the UK environment from the risks of microplastics.

The Environment Agency (EA) is supporting collaborative research which will support future policy and regulatory decisions on microplastics and nanoplastics by extension. This includes six investigations with the water industry under the Chemical Investigations Programme, considering generation of microplastics within wastewater treatment works through breakdown of plastic equipment, emerging sewage treatment technologies, and pathways of microplastics from biosolids applied to land to soils and groundwater. The EA is also conducting research into tyre wear particles and associated chemicals – one report has been published this year and another is due to be published later this year. The EA is also supporting National Highways and academic partners on research into microplastics generated during driving and strategies to intercept them in highway runoff. While the EA’s research is driven by environmental risk, the data could benefit public health risk assessment by the relevant bodies.

The Food Standards Agency (FSA) continues to monitor and assess emerging data regarding microplastics in food. The Committee on Toxicity of Chemicals in Food, Consumer Products, and the Environment (COT), an independent scientific committee that provides advice to the FSA and other Government departments is currently considering the issue of microplastics. The COT has previously concluded that the available data was insufficient for a complete assessment. The FSA is keeping the issue of microplastics under review as new evidence becomes available.