An explanatory guidance note ‘Chain of Conformity and Certified Biosolids Guidance Note’ can be accessed here

The current complete Chains of Conformity below, in alphabetical order of treatment organisation, indicate where BAS Members can claim to recycle BAS Certified Biosolids to agricultural land along with a unique identifier.

Reference Processing Facility Treatment Type
& Product
Treatment Organisation Transport & Storage Organisation Application to Land Organisation Certified Biosolids
(Unique Identifier)
Afan Advanced Anaerobic Digestion, Cake Dwr Cymru Dwr Cymru Dwr Cymru BAS019
Basildon Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS002
Cambridge Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS004
Cardiff Advanced Anaerobic Digestion, Cake Dwr Cymru Dwr Cymru Dwr Cymru BAS020
Chelmsford Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS005
Colchester Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS006
Cotton Valley Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS007
Daldowie Thermal Drying, Granules SMW ASBL ASBL BAS068
Five Fords Advanced Anaerobic Digestion, Cake Dwr Cymru Dwr Cymru Dwr Cymru BAS022
Great Billing Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS008
Hatton Thermal Drying, Granules Veolia Water Outsourcing ASBL ASBL BAS149
Kings Lynn Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS010
Levenmouth Thermal Drying, Granules Celts ASBL ASBL BAS018
Lossiemouth Thermal Drying, Granules Veolia Water Outsourcing ASBL ASBL BAS150
Lossiemouth Lime Treatment, Cake ASBL ASBL ASBL BAS016
March Lime Treatment, Cake Anglian Water Anglian Water Anglian Water BAS011
Pyewipe Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS012
Wester Jawcraig Lime Treatment, Cake ASBL ASBL ASBL BAS017
Whitlingham Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS015
Meadowhead Thermal Drying, Granules AeSOP's ASBL ASBL BAS001
Bran Sands Advanced Anaerobic Digestion, Cake Northumbrian Water Northumbrian Water Northumbrian Water BAS027
Howden STW Advanced Anaerobic Digestion, Cake Northumbrian Water Northumbrian Water Northumbrian Water BAS028
Cumnock (Underwood) Anaerobic Digestion, Cake Scottish Water Scottish Water Scottish Water BAS029
Galashiels Anaerobic Digestion, Cake Scottish Water Scottish Water Scottish Water BAS030
Girvan Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS031
Hawick Anaerobic Digestion, Liquid Scottish Water Scottish Water Scottish Water BAS032
Head of Work, Kirkwall Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS033
Invergordon Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS034
Kinneil Kerse Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS035
Perth (Sleepless Inch) WWTP Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS036
Stornoway WWTW Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS037
Thurso Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS038
Troqueer Lime Treatment, Cake Scottish Water Scottish Water Scottish Water BAS039
Nigg STW Advanced Anaerobic Digestion, Cake Scottish Water Services Grampian Scottish Water Services Grampian Scottish Water Services Grampian BAS040
Hightown Formby Site Lime Treatment, Cake SED Services Ltd SED Services Ltd SED Services Ltd BAS041
Alfreton Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Brancote Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Claymills Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Derby Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Finham Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Hayden Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Hinckley Anaerobic Digestion, Liquid Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Kidderminster Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Long Eaton - Toton Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Mansfield Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Melton Mowbray Anaerobic Digestion, Liquid Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Minworth Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Netheridge Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Newthorpe Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Nuneaton Hartshill Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Redditch (Spernal) Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Roundhill Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Rugby Anaerobic Digestion, Liquid Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Rushmoor Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Scunthorpe Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Stoke Bardolph Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Strongford Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Wanlip Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Worcester Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Worksop Anaerobic Digestion, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021
Ashford (Barnstaple) STC Lime Treatment, Cake South West Water South West Water South West Water BAS069
Brokenbury (Torbay) STC Lime Treatment, Cake South West Water South West Water South West Water BAS070
Buckland (Newton Abbot) STC Lime Treatment, Cake South West Water South West Water South West Water BAS071
Camborne STC Lime Treatment, Cake South West Water South West Water South West Water BAS072
Camel's Head (Plymouth) STC Lime Treatment, Cake South West Water South West Water South West Water BAS073
Central (Plymouth) STC Lime Treatment, Cake South West Water South West Water South West Water BAS074
Cornborough STC Lime Treatment, Cake South West Water South West Water South West Water BAS075
Countess Wear (Exeter) STC Lime Treatment, Cake South West Water South West Water South West Water BAS076
Countess Wear (Exeter) STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS077
Ernesettle (Plymouth) STC Lime Treatment, Cake South West Water South West Water South West Water BAS078
Falmouth STC Lime Treatment, Cake South West Water South West Water South West Water BAS079
Hayle STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS080
Kilmington (Axminster) STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS081
Lords Meadow (Crediton) STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS082
Maer Lane (Exmouth) STC Lime Treatment, Cake South West Water South West Water South West Water BAS083
Marshmills (Plymouth) STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS084
Menagwins (St Austell) STC Lime Treatment, Cake South West Water South West Water South West Water BAS085
Nanstallon (Bodmin) STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS086
Newham (Truro) STC Lime Treatment, Cake South West Water South West Water South West Water BAS087
Newquay Lime Treatment, Cake South West Water South West Water South West Water BAS088
Par (St Austell) STC Lime Treatment, Cake South West Water South West Water South West Water BAS089
Radford (Plymouth) STC Lime Treatment, Cake South West Water South West Water South West Water BAS090
St Leonards (Launceston) STC Lime Treatment, Cake South West Water South West Water South West Water BAS091
Tiverton STC Composting, Cake South West Water South West Water South West Water BAS092
Totnes STC Anaerobic Digestion, Cake South West Water South West Water South West Water BAS093
Ashford STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS094
Aylesford STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS095
Budds Farm STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS096
Canterbury STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS097
East Worthing STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS098
Ford STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS099
Fullerton STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS100
Goddards Green STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS101
Gravesend STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS102
Ham Hill STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS103
Hastings STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS104
Millbrook STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS105
Motney Hill STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS106
Peacehaven STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS107
Queenborough STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS108
Sandown STC Anaerobic Digestion, Cake Southern Water Southern Water Southern Water BAS109
Aylesbury Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS110
Banbury Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS111
Basingstoke Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS112
Beckton Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS113
Beddington Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS114
Bicester Lime Treatment, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS115
Bishops Stortford Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS116
Bracknell Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS117
Camberley Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS118
Chertsey Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS119
Crawley Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS120
Crossness Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS121
Deephams Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS122
Didcot Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS123
East Hyde Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS124
Hogsmill Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS127
Longreach Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS128
Maple Lodge Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS129
Mogden/Iver South Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS130
Oxford Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS131
Reading Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS132
Riverside Advanced Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS133
Rye Meads Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS134
Slough Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS135
Swindon Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS136
Wargrave Anaerobic Digestion, Cake Thames Water Utilities Ltd Thames Water Utilities Ltd Thames Water Utilities Ltd BAS137
Blackburn WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS138
Bromborough WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS139
Burnley WwTW Advanced Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS140
Carlisle WwTW Lime Treatment, Cake United Utilities United Utilities United Utilities BAS141
Ellesmere Port WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS142
Lancaster WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS143
Leigh WwTW Advanced Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS144
Manchester Bioresource Centre (MBC) Advanced Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS145
Mersey Valley Sludge Processing Centre (MVSPC) Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS146
Southport WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS147
Stockport WwTW Anaerobic Digestion, Cake United Utilities United Utilities United Utilities BAS148
Allanfearn Anaerobic Digestion, Cake Veolia Water Outsourcing Ltd Scottish Water Scottish Water BAS151
Seafield WwTW Advanced Anaerobic Digestion, Cake Veolia Water Outsourcing Ltd Veolia Water Outsourcing Ltd Veolia Water Outsourcing Ltd BAS152
Avonmouth WRC Anaerobic Digestion with Lime Addition, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS153
Berry Hill BRC Anaerobic Digestion, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS154
Minehead WRC Lime Treatment, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS155
Poole WRC Anaerobic Digestion, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS156
Ratfyn WRC Lime Treatment, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS157
Taunton (Ham) WRC Anaerobic Digestion, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS158
Trowbridge WRC Advanced Anaerobic Digestion, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS159
West Huntspill WRC Lime Treatment, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS160
Yeovil Vale Road BRC Lime Treatment, Cake Wessex Water Services Ltd Wessex Water Services Ltd Wessex Water Services Ltd BAS161
Aldwarke Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS162
Blackburn Meadows Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS163
Bridlington Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS164
Calder Vale Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS165
Esholt Advanced Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS166
Hull Anaerobic Digestion with Lime Addition, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS167
Knostrop Anaerobic Digestion with Lime Addition, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS168
Lundwood Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS169
Naburn Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS170
Old Whittington Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS171
Sandall Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS172
Staveley Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS174
Woodhouse Mill Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS175
Wood Farm Lime Treatment, Cake 4Recycling Ltd 4Recycling Ltd 4Recycling Ltd BAS176
Cliff Quay Advanced Anaerobic Digestion, Cake Anglian Water Anglian Water Anglian Water BAS177
Mitchell Laithes Anaerobic Digestion, Cake Yorkshire Water Yorkshire Water Yorkshire Water BAS178
Barnhurst/Old Hatton's Farm Anaerobic Digestion with Lime addition, Cake Severn Trent Severn Trent Severn Trent Suspended from 14.04.2021

"Worth £25 million per year to British farming"