Guidance

Storm overflow assessment framework 2025

How to assess the performance of and scope out improvements to storm overflows under Urban Waste Water Treatment Regulations requirements.

• From: Environment Agency
• Published: 24 March 2025

Applies to England

Documents

Storm overflow assessment framework 2025

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Details

This 2025 framework gives guidance for water companies in England. It replaces the storm overflow assessment framework published in 2018. It reflects:

• policy developments
• lessons learned from the 2018 framework
• the greater event duration monitoring (EDM) and data availability
• the Storm Overflow Discharge Reduction Plan

The framework references, links and is informed by other guidance and regulations.

Published 24 March 2025