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 her Department's press notice entitled Reed: Government to cut sewage pollution in half by 2030, published on 19 July 2025, if she will set out specific measures being taken on (a) sustainable drainage systems and (b) nature-based solutions.

The Government will introduce root and branch reform to revolutionise the water industry, working in partnership with water companies, investors and communities to deliver a systematic approach to improving drainage and wastewater systems. This will have benefits for communities, the environment, flood prevention, economic growth, and urban development, ensuring policies and services work better together to deliver real benefits for people and nature. This will include setting out the opportunity to make greater use of nature-based solutions where these represent good value for money and do more for the environment.

Ofwat published its final determinations from the 5-year price review (PR24) in December 2024. This set out a package of expenditure for the regulated water companies of £104 billion from 2025 to 2030, including over £10 billion to reduce sewage discharges from over 2,500 storm overflows in England and £4.795 billion to reduce phosphorous pollution.

Regarding the 50% target, storm overflows are designed to act as relief valves when the sewerage system is at risk of being overwhelmed, such as during heavy rain. The Government has required all storm overflows to have event duration monitors installed which provides information on sewage discharges. That information is published in near real time. The pledge is for a 50% cut in spills from storm overflows by the end of December 2029.

In addition, the pledge includes the EIP interim target to reduce Phosphorus loadings in treated wastewater by 50% by 31 January 2028, on a 2020 baseline. Phosphorus is a key cause of nutrient pollution in the environment, including contributing to algal blooms and eutrophication.