Storm overflow action plan
In March 2024 we published our storm overflow action plan. This is requested by Defra from every water and sewerage company in England. We published an updated version in October 2024.
We’ve also published an accompanying guide to help explain the data in more detail. It includes assessments and interventions for reducing the use of our storm overflows.
The storm overflow action plan outlines how we'll deliver against governmental targets.
The government has set a target of no more than 10 discharges on average, per overflow per year by 2050. Our PR24 plan shows how we plan to reach this. We’re planning for a maximum of:
- 24 spills on average, per overflow per year by 2025
- 17 spills on average, per overflow per year by 2030

Next steps
Like the river health action plan, the storm overflow action plan should be considered a working document, rather than a final plan. It will also be subject to change as our planning evolves.