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

To ask the Secretary of State for Environment, Food and Rural Affairs, with reference to the article published in Science of the Total Environment in June 2020, entitled, London's river of plastic: High levels of microplastics in the Thames water column, by Rowley et al, what steps his Department is taking to tackle pollution in waterways.

Defra is working with the Environment Agency, academics and the UK water industry to understand the scale of the microplastic pollution problem and to establish detection methods. The aim is to identify, characterise and quantify the types of microplastics entering wastewater treatment plants, evaluate the efficiency of treatment processes for the removal of microplastics from domestic wastewaters and assess the fate and biological effects of microplastics in receiving rivers.

Although there has been substantive research reporting the presence and impacts of microplastics in the marine environment, little is known about their sources, release and impact on freshwaters or their ultimate transport to the marine environment. Defra recently commissioned three evidence reviews on analysis, prevalence & impact of microplastics in freshwater and estuarine environments to further understand these issues and will use the outcomes from these and other research to develop policy options to help mitigate the impact of microplastics in the aquatic environment. These evidence reviews can be found at the following link: http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&ProjectID=20192&FromSearch=Y&Publisher=1&SearchText=WT15112&SortString=ProjectCode&SortOrder=Asc&Paging=10#Description