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

To ask the Secretary of State for Environment, Food and Rural Affairs, what steps he is taking to reduce microplastic pollution from combined sewer outflows.

Tackling marine litter and plastic pollution is a priority for the UK Government, which is why we are working domestically and internationally to implement measures that will prevent macro-sized plastic litter which are sources of microplastics from reaching rivers, seas and the ocean in the first place.

As part of Price Review 2024 (PR24), which runs from 2025–2030, water companies will be delivering record levels through the £22.1 billion Water Industry National Environment Programme. This includes over £11 billion to improve nearly 3,000 storm overflows across England and Wales which OfWat expects will reduce storm overflow discharges by 45% by 2030, compared to 2021 levels. This will help to reduce discharges of raw sewage which can contain organic pollutants, microplastics, pharmaceuticals, nutrients, and heavy metals, as well as visible litter that is flushed down toilets.

We are also taking forward investigations through the water industry’s Chemical Investigations Programme, to understand how we can reduce the levels of microplastics entering the water environment through treated wastewater. Microplastics have been recognised as a significant standalone issue and the water industry are funding six further investigations between 2025 and 2030.