Reducing environmental impacts of CSOs

20 May 2026
Resilience Stage

With increasing pressure on water companies to mitigate environmental harm from combined sewer overflows (CSOs), the sector must embrace innovation and smarter operations to reduce spills. This session will examine emerging technologies, regulatory expectations and nature-based solutions to address the challenge.


Chair and update from the National Storm Overflow Hub
Nik Perepelov, Head of Natural Environment - Water UK

Regulatory expectations and finding a way forward for nature based solutions
Matthew Stembrowicz, Senior Advisor - EA

Tackling the problem at source: pre pipe solution
Matt Wheeldon, Director of Infrastructure Development - Wessex Water

Treating more with nature based solutions
Claire Green, Manager of Environmental Planning and Governance - Yorkshire Water

Chairperson
Nik Perepelov
Nik Perepelov, Head of Natural Environment - Water UK
Speakers
Claire Green
Claire Green, Manager of Environmental Planning and Governance - Yorkshire Water
Matthew Stembrowicz
Matthew Stembrowicz, Senior Advisor - EA
Matt Wheeldon
Matt Wheeldon, Director of Infrastructure Development - Wessex Water