Severn Trent
Water
Thames Water
Water supply and waste
treatment areas
Anglian
Water
AffinityWater
Oxford
London
Reading
Guildford
Wessex
Water
South East
Water
Anglian Water
Hafren
Dyfrdwy
Severn Trent
Water
Thames Water
Water supply and waste
treatment areas
Dŵr Cymru
AffinityWater
Oxford
London
Reading
Guildford
South East
Water
Wessex Water
South West
Water