2020-21 models Affinity Water 2020-21 Anglian Water 2020-21 Bristol Water 2020-21 Dŵr Cymru 2020-21 Hafren Dyfrdwy 2020-21 Northumbrian Water 2020-21 Portsmouth Water 2020-21 SES Water 2020-21 Severn Trent Water 2020-21 South East Water 2020-21 South Staffs Water 2020-21 South West Water 2020-21 Southern Water 2020-21 Thames Water 2020-21 United Utilities 2020-21 Wessex Water 2020-21 Yorkshire Water 2020-21