Cost Change 2026 Draft Determinations - Page 1 of 5 - Ofwat (Water Regulation Authority) - Citizen Space

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Background

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1. Supporting documents

Welsh language executive summary Welsh language executive summary

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Company cost change draft determinations Company cost change draft determinations

Cost Change draft determination 2026 - Anglian Water_Redacted

Cost Change draft determination 2026 – Dŵr Cymru

Cost Change draft determination 2026 – Hafren Dyfrdwy

Cost Change draft determination 2026 – Northumbrian Water_Redacted

Cost Change draft determination 2026 – SES Water_Redacted

Cost Change draft determination 2026 – Severn Trent Water_Redacted

Cost Change draft determination 2026 – South East Water_Redacted

Cost Change draft determination 2026 – South West Water_Redacted

Cost Change draft determination 2026 – Southern Water_Redacted

Cost Change draft determination 2026 – Thames Water

Cost Change draft determination 2026 – United Utilities_Redacted

Cost Change draft determination 2026 – Wessex Water_Redacted

Cost Change draft determination 2026 – Yorkshire Water_Redacted

Other appendices Other appendices

Cost Change draft determination 2026 - Asset health cross cutting issues appendix

Cost Change draft determinations 2026 – Price control deliverables appendix

Practical approach to what base buys - Water UK

Cost change models Cost change models

CCP 2026 DD Cost Change models
CCP 2026 DD Cost models
CCP 2026 DD Financial models
CCP 2026 DD In-Period Adjustments models
CCP 2026 DD Price Control Deliverable models

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