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) |
Current status (Click for more) |
|---|---|---|---|---|---|---|
| Basildon | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0002 | Certified
Current StatusBasildon - BAS0002Certified from 10.12.2015 to present |
| Cambridge | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0004 | Certified
Current StatusCambridge - BAS0004Certified from 10.12 2015 to present |
| Cardiff | Advanced Anaerobic Digestion, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0020 | Certified
Current StatusCardiff - BAS0020Certified from 23.11.2016 to present |
| Chelmsford | Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0005 | Certified
Current StatusChelmsford - BAS0005Certified from 10.12.2015 to present |
| Colchester | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0006 | Certified
Current StatusColchester - BAS0006Certified from 10.12.2015 to present |
| Cotton Valley | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0007 | Certified
Current StatusCotton Valley - BAS0007Certified from 10.12.2015 to present |
| Daldowie | Thermal Drying, Granules | SMW | ASBL | ASBL | BAS0068 | Certified
Current StatusDaldowie - BAS0068Certified from 01.03.2018 to present |
| Five Fords | Advanced Anaerobic Digestion, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0022 | Certified
Current StatusFive Fords - BAS0022Certified from 23.11.2018 to present |
| Great Billing | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0008 | Certified
Current StatusGreat Billing - BAS0008Certified from 10.12.2015 to present |
| Hatton | Thermal Drying, Granules | Veolia Water Outsourcing | ASBL | ASBL | BAS0149 | Certified
Current StatusHatton - BAS0149Certified from 18.01.2019 to present |
| Kings Lynn | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0010 | Certified
Current StatusKings Lynn - BAS0010Certified from 10.12.2015 to present |
| Levenmouth | Thermal Drying, Granules | Celts | ASBL | ASBL | BAS0018 | Certified
Current StatusLevenmouth - BAS0018Certified from 02.09.2019 to present |
| Lossiemouth | Thermal Drying, Granules | Veolia Water Outsourcing | ASBL | ASBL | BAS0150 | Certified
Current StatusLossiemouth - BAS0150Certified from 18.01.2019 to present |
| Lossiemouth | Lime Treatment, Cake | ASBL | ASBL | ASBL | BAS0016 | Certified
Current StatusLossiemouth - BAS0016Certified from 10.10.2019 to present |
| March | Lime Treatment, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0011 | Certified
Current StatusMarch - BAS0011Certified from 10.12.2016 to present |
| Pyewipe | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0012 | Certified
Current StatusPyewipe - BAS0012Certified from 10.12.2015 to present |
| Wester Jawcraig | Lime Treatment, Cake | ASBL | ASBL | ASBL | BAS0017 | Certified
Current StatusWester Jawcraig - BAS0017Certified from 10.10.2019 to present |
| Whitlingham | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0015 | Certified
Current StatusWhitlingham - BAS0015Certified from 10.12.2015 to present |
| Meadowhead | Thermal Drying, Granules | AeSOP's | ASBL | ASBL | BAS0001 | Certified
Current StatusMeadowhead - BAS0001Certified from 10.02.2019 to present |
| Bran Sands | Advanced Anaerobic Digestion, Cake | Northumbrian Water | Northumbrian Water | Northumbrian Water | BAS0027 | Certified
Current StatusBran Sands - BAS0027Certified from 16.07.2016 to present |
| Howden STW | Advanced Anaerobic Digestion, Cake | Northumbrian Water | Northumbrian Water | Northumbrian Water | BAS0028 | Certified
Current StatusHowden STW - BAS0028Certified from 16.07.2016 to present |
| Cumnock (Underwood) | Anaerobic Digestion, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0029 | Certified
Current StatusCumnock (Underwood) - BAS0029Certified from 08.06.2017 to present |
| Galashiels | Anaerobic Digestion, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0030 | Certified
Current StatusGalashiels - BAS0030Certified from 08.06.2017 to present |
| Girvan | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0031 | Certified
Current StatusGirvan - BAS0031Certified from 08.06.2017 to present |
| Hawick | Anaerobic Digestion, Liquid | Scottish Water | Scottish Water | Scottish Water | BAS0032 | Certified
Current StatusHawick - BAS0032Certified from 08.06.2017 to present |
| Head of Work, Kirkwall | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0033 | Certified
Current StatusHead of Work, Kirkwall - BAS0033Certified from 08.06.2017 to present |
| Invergordon | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0034 | Certified
Current StatusInvergordon - BAS0034Certified from 08.06.2017 to present |
| Kinneil Kerse | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0035 | Certified
Current StatusKinneil Kerse - BAS0035Certified from 08.06.2017 to present |
| Perth (Sleepless Inch) WWTP | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0036 | Certified
Current StatusPerth (Sleepless Inch) WWTP - BAS0036Certified from 08.06.2017 to present |
| Stornoway WWTW | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0037 | Certified
Current StatusStornoway WWTW - BAS0037Certified from 08.06.2017 to present |
| Thurso | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0038 | Certified
Current StatusThurso - BAS0038Certified from 08.06.2017 to present |
| Troqueer | Lime Treatment, Cake | Scottish Water | Scottish Water | Scottish Water | BAS0039 | Certified
Current StatusTroqueer - BAS0039Certified from 09.06.2019 to present |
| Nigg STW | Advanced Anaerobic Digestion, Cake | Scottish Water Services Grampian | Scottish Water Services Grampian | Scottish Water Services Grampian | BAS0040 | Certified
Current StatusNigg STW - BAS0040Certified from 23.10.2018 to present |
| Hightown Formby Site | Lime Treatment, Cake | SED Services Ltd | SED Services Ltd | SED Services Ltd | BAS0041 | Certified
Current StatusHightown Formby Site - BAS0041Certified from 06.02.2020 to present |
| Alfreton | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0042 | Certified
Current StatusAlfreton - BAS0042Certified from 25.05.2018 to 14.04.2021 and then 07.12.2021 to present |
| Brancote | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0044 | Not certified
Current StatusBrancote - BAS0044Certified from 26.05.2018 to 14.04.2021 |
| Claymills | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0045 | Certified
Current StatusClaymills - BAS0045Certified from 25.05.2017 to 14.04.2021 and 07.12.2021 to present |
| Derby | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0046 | Certified
Current StatusDerby - BAS0046Certified from 25.05.2016 to 14.04.2021 and then from 14.02.2022 to present |
| Finham | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0047 | Certified
Current StatusFinham - BAS0047Certified from 25.05.2018 to present |
| Hayden | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0048 | Certified
Current StatusHayden - BAS0048Certified from 25.05.2018 to present |
| Hinckley | Anaerobic Digestion, Liquid | Severn Trent Water | Severn Trent Water | No | BAS0049 | Not certified
Current StatusHinckley - BAS0049Certified from 25.05.2017 to 14.04.2021 |
| Kidderminster | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0050 | Certified
Current StatusKidderminster - BAS0050Certified from 25.05.2017 to present |
| Toton (Long Eaton) | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0051 | Certified
Current StatusToton (Long Eaton) - BAS0051Certified from 25.05.2016 to 14.04.2021 and then 07.12.2021 to present |
| Mansfield | Lime Treatment, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0052 | Certified
Current StatusMansfield - BAS0052Certified from 25.05.2018 to 14.04.2021 and then 07.12.2021 |
| Melton Mowbray | Anaerobic Digestion, Liquid | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0053 | Not certified
Current StatusMelton Mowbray - BAS0053Certified from 25.05.2016 to 14.04.2021 |
| Minworth | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0054 | Certified
Current StatusMinworth - BAS0054Certified from 25.05.2016 to 14.04.2021 and then 07.12.2021 to present |
| Netheridge | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0055 | Certified
Current StatusNetheridge - BAS0055Certified from 25.05.2018 to present |
| Newthorpe | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0056 | Certified
Current StatusNewthorpe - BAS0056Certified from 25.05.2018 to present |
| Nuneaton Hartshill | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0057 | Certified
Current StatusNuneaton Hartshill - BAS0057Certified from 25.05.2016 to 14.04.2021 and then 07.12.2021 to present |
| Redditch (Spernal) | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0058 | Certified
Current StatusRedditch (Spernal) - BAS0058Certified from 25.05.2017 to present |
| Roundhill | Anaerobic Digestion with Lime Treatment, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0059 | Certified
Current StatusRoundhill - BAS0059Certified from 25.05.2018 to present |
| Rugby | Anaerobic Digestion, Liquid | Severn Trent Water | Severn Trent Water | No | BAS0060 | Not certified
Current StatusRugby - BAS0060Certified from 25.05.2016 to 14.04.2021 |
| Rushmoor | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0061 | Certified
Current StatusRushmoor - BAS0061Certified from 25.05.2017 to present |
| Scunthorpe | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0062 | Certified
Current StatusScunthorpe - BAS0062Certified from 25.05.2017 to present |
| Stoke Bardolph | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0063 | Certified
Current StatusStoke Bardolph - BAS0063Certified from 25.05.2018 to 14.04.2021 and then 07.12.2021 to present |
| Strongford | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0064 | Certified
Current StatusStrongford - BAS0064Certified from 25.05.2016 to present |
| Wanlip | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0065 | Certified
Current StatusWanlip - BAS0065Certified from 25.05.2018 to present |
| Worcester | Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0066 | Certified
Current StatusWorcester - BAS0066Certified from 25.05.2017 to present |
| Worksop | Advanced Anaerobic Digestion, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0067 | Certified
Current StatusWorksop - BAS0067Certified from 25.05.2016 to 14.04.2021 and then 07.12.2021 to present |
| Ashford (Barnstaple) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0069 | Certified
Current StatusAshford (Barnstaple) STC - BAS0069Certified from 21.10.2017 to present |
| Brokenbury (Torbay) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0070 | Certified
Current StatusBrokenbury (Torbay) STC - BAS0070Certified from 21.10.2016 to present |
| Buckland (Newton Abbot) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0071 | Certified
Current StatusBuckland (Newton Abbot) STC - BAS0071Certified from 21.10.2017 to present |
| Camborne STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0072 | Certified
Current StatusCamborne STC - BAS0072Certified from 21.10.2018 to present |
| Camel's Head (Plymouth) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0073 | Certified
Current StatusCamel's Head (Plymouth) STC - BAS0073Certified from 21.10.2018 to present |
| Central (Plymouth) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0074 | Certified
Current StatusCentral (Plymouth) STC - BAS0074Certified from 21.10.2016 to present |
| Cornborough STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0075 | Certified
Current StatusCornborough STC - BAS0075Certified from 21.10.2018 to present |
| Countess Wear (Exeter) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0076 | Certified
Current StatusCountess Wear (Exeter) STC - BAS0076Certified from 21.10.2016 to present |
| Countess Wear (Exeter) STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0077 | Certified
Current StatusCountess Wear (Exeter) STC - BAS0077Certified from 21.10.2016 to present |
| Ernesettle (Plymouth) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0078 | Certified
Current StatusErnesettle (Plymouth) STC - BAS0078Certified from 21.10.2018 to present |
| Falmouth STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0079 | Certified
Current StatusFalmouth STC - BAS0079Certified from 21.10.2017 to present |
| Hayle STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0080 | Certified
Current StatusHayle STC - BAS0080Certified from 21.10.2018 to present |
| Kilmington (Axminster) STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0081 | Not Certified
Current StatusKilmington (Axminster) STC - BAS0081Certified from 21.10.2017 to 20.10.2020 |
| Lords Meadow (Crediton) STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0082 | Certified
Current StatusLords Meadow (Crediton) STC - BAS0082Certified from 21.10.2018 to present |
| Maer Lane (Exmouth) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0083 | Certified
Current StatusMaer Lane (Exmouth) STC - BAS0083Certified from 21.10.2016 to present |
| Marshmills (Plymouth) STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0084 | Certified
Current StatusMarshmills (Plymouth) STC - BAS0084Certified from 21.10.2018 to present |
| Menagwins (St Austell) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0085 | Certified
Current StatusMenagwins (St Austell) STC - BAS0085Certified from 21.10.2018 to present |
| Nanstallon (Bodmin) STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0086 | Certified
Current StatusNanstallon (Bodmin) STC - BAS0086Certified from 21.10.2018 to present |
| Newham (Truro) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0087 | Certified
Current StatusNewham (Truro) STC - BAS0087Certified from 21.10.2018 to present |
| Newquay | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0088 | Certified
Current StatusNewquay - BAS0088Certified from 21.10.2018 to present |
| Par (St Austell) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0089 | Certified
Current StatusPar (St Austell) STC - BAS0089Certified from 21.10.2016 to present |
| Radford (Plymouth) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0090 | Certified
Current StatusRadford (Plymouth) STC - BAS0090Certified from 21.10.2016 to present |
| St Leonards (Launceston) STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0091 | Certified
Current StatusSt Leonards (Launceston) STC - BAS0091Certified from 21.10.2018 to present |
| Tiverton STC | Composting, Cake | South West Water | South West Water | South West Water | BAS0092 | Certified
Current StatusTiverton STC - BAS0092Certified from 21.10.2016 |
| Totnes STC | Anaerobic Digestion, Cake | South West Water | South West Water | South West Water | BAS0093 | Certified
Current StatusTotnes STC - BAS0093Certified from 21.10.2017 to present |
| Ashford STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0094 | Certified
Current StatusAshford STC - BAS0094Certified from 17.07.2018 to present |
| Aylesford STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0095 | Certified
Current StatusAylesford STC - BAS0095Certified from 17.07.2018 to present |
| Budds Farm STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0096 | Certified
Current StatusBudds Farm STC - BAS0096Certified from 17.07.2018 to present |
| Canterbury STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0097 | Certified
Current StatusCanterbury STC - BAS0097Certified from 17.07.2018 to present |
| East Worthing STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0098 | Certified
Current StatusEast Worthing STC - BAS0098Certified from 17.07.2018 to present |
| Ford STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0099 | Certified
Current StatusFord STC - BAS0099Certified from 17.07.2018 to present |
| Fullerton STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0100 | Certified
Current StatusFullerton STC - BAS0100Certified from 17.07.2018 to present |
| Goddards Green STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0101 | Certified
Current StatusGoddards Green STC - BAS0101Certified from 17.07.2018 to present |
| Gravesend STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0102 | Not Certified
Current StatusGravesend STC - BAS0102Certified from 17.07.2018 to 16.07.2021 |
| Ham Hill STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0103 | Certified
Current StatusHam Hill STC - BAS0103Certified from 17.07.2018 to present |
| Hastings STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0104 | Certified
Current StatusHastings STC - BAS0104Certified from 17.07.2018 to present |
| Millbrook STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0105 | Certified
Current StatusMillbrook STC - BAS0105Certified from 17.07.2018 to present |
| Motney Hill STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0106 | Certified
Current StatusMotney Hill STC - BAS0106Certified from 17.07.2018 to present |
| Peacehaven STC | Anaerobic Digestion with Lime Addition, Cake | Southern Water | Southern Water | Southern Water | BAS0107 | Certified
Current StatusPeacehaven STC - BAS0107Certified from 17.07.2018 to present |
| Queenborough STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0108 | Certified
Current StatusQueenborough STC - BAS0108Certified from 17.07.2018 to present |
| Sandown STC | Anaerobic Digestion, Cake | Southern Water | Southern Water | Southern Water | BAS0109 | Certified
Current StatusSandown STC - BAS0109Certified from 17.07.2018 to present |
| Aylesbury | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0110 | Certified
Current StatusAylesbury - BAS0110Certified from 18.08.2016 to present |
| Banbury | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0111 | Certified
Current StatusBanbury - BAS0111Certified from 18.08.2016 to present |
| Basingstoke | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0112 | Certified
Current StatusBasingstoke - BAS0112Certified from 18.08.2016 to present |
| Beckton | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0113 | Certified
Current StatusBeckton - BAS0113Certified from 18.08.2016 to present |
| Beddington | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0114 | Certified
Current StatusBeddington - BAS0114Certified from 19.08.2019 to present |
| Bicester | Lime Treatment, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0115 | Certified
Current StatusBicester - BAS0115Certified from 18.08.2016 to present |
| Bishops Stortford | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0116 | Certified
Current StatusBishops Stortford - BAS0116Certified from 18.08.2016 to present |
| Bracknell | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0117 | Certified
Current StatusBracknell - BAS0117Certified from 18.08.2016 to present |
| Camberley | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0118 | Certified
Current StatusCamberley - BAS0118Certified from 18.08.2018 to present |
| Chertsey | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0119 | Certified
Current StatusChertsey - BAS0119Certified from 18.08.2016 to present |
| Crawley | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0120 | Certified
Current StatusCrawley - BAS0120Certified from 18.08.2016 to present |
| Crossness | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0121 | Certified
Current StatusCrossness - BAS0121Certified from 18.08.2016 to present |
| Deephams | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0122 | Certified
Current StatusDeephams - BAS0122Certified from 18.08.2016 to present |
| Didcot | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0123 | Certified
Current StatusDidcot - BAS0123Certified from 18.08.2016 to present |
| East Hyde | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0124 | Certified
Current StatusEast Hyde - BAS0124Certified from 18.08.2016 to present |
| Hogsmill | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0127 | Certified
Current StatusHogsmill - BAS0127Certified from 18.08.2016 to present |
| Longreach | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0128 | Certified
Current StatusLongreach - BAS0128Certified from 18.08.2016 to present |
| Maple Lodge | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0129 | Certified
Current StatusMaple Lodge - BAS0129Certified from 18.08.2016 to present |
| Mogden/Iver South | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0130 | Certified
Current StatusMogden/Iver South - BAS0130Certified from 18.08.2016 to present |
| Oxford | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0131 | Certified
Current StatusOxford - BAS0131Certified from 18.08.2016 to present |
| Reading | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0132 | Certified
Current StatusReading - BAS0132Certified from 18.08.2016 to present |
| Riverside | Advanced Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0133 | Certified
Current StatusRiverside - BAS0133Certified from 18.08.2016 to present |
| Rye Meads | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0134 | Certified
Current StatusRye Meads - BAS0134Certified from 18.08.2016 to present |
| Slough | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0135 | Certified
Current StatusSlough - BAS0135Certified from 18.08.2016 to present |
| Swindon | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0136 | Certified
Current StatusSwindon - BAS0136Certified from 18.08.2016 to present |
| Wargrave | Anaerobic Digestion, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0137 | Certified
Current StatusWargrave - BAS0137Certified from 18.08.2016 to present |
| Blackburn WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0138 | Certified
Current StatusBlackburn WwTW - BAS0138Certified from 05.04.2018 to present |
| Bromborough WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0139 | Certified
Current StatusBromborough WwTW - BAS0139Certified from 05.04.2018 to present |
| Burnley WwTW | Advanced Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0140 | Certified
Current StatusBurnley WwTW - BAS0140Certified from 05.04.2018 to present |
| Carlisle WwTW | Lime Treatment, Cake | United Utilities | United Utilities | United Utilities | BAS0141 | Certified
Current StatusCarlisle WwTW - BAS0141Certified from 05.04.2018 to present |
| Ellesmere Port WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0142 | Certified
Current StatusEllesmere Port WwTW - BAS0142Certified from 05.04.2018 to present |
| Lancaster WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0143 | Certified
Current StatusLancaster WwTW - BAS0143Certified from 05.04.2018 to present |
| Leigh WwTW | Advanced Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0144 | Certified
Current StatusLeigh WwTW - BAS0144Certified from to 05.04.2018 to present |
| Manchester Bioresource Centre (MBC) | Advanced Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0145 | Certified
Current StatusManchester Bioresource Centre (MBC) - BAS0145Certified from 05.04.2018 to present |
| Mersey Valley Sludge Processing Centre (MVSPC) | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0146 | Certified
Current StatusMersey Valley Sludge Processing Centre (MVSPC) - BAS0146Certified from 05.04.2018 to present |
| Southport WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0147 | Certified
Current StatusSouthport WwTW - BAS0147Certified from 05.04.2018 to present |
| Stockport WwTW | Anaerobic Digestion, Cake | United Utilities | United Utilities | United Utilities | BAS0148 | Certified
Current StatusStockport WwTW - BAS0148Certified from 05.04.2018 to present |
| Allanfearn | Anaerobic Digestion, Cake | Veolia Water Outsourcing Ltd | Scottish Water | Scottish Water | BAS0151 | Certified
Current StatusAllanfearn - BAS0151Certified from 18.01.2019 to present |
| Seafield WwTW | Advanced Anaerobic Digestion, Cake | Veolia Water Outsourcing Ltd | Veolia Water Outsourcing Ltd | Veolia Water Outsourcing Ltd | BAS0152 | Certified
Current StatusSeafield WwTW - BAS0152Certified from 18.01.2019 to present |
| Avonmouth WRC | Anaerobic Digestion with Lime Addition, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0153 | Certified
Current StatusAvonmouth WRC - BAS0153Certified from 12.07.2018 to present |
| Berry Hill BRC | Anaerobic Digestion, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0154 | Certified
Current StatusBerry Hill BRC - BAS0154Certified from 12.07.2018 to present |
| Minehead WRC | Lime Treatment, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0155 | Not certified
Current StatusMinehead WRC - BAS0155Certified from 12.07.2018 to 12.07.2021 |
| Poole WRC | Anaerobic Digestion, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0156 | Certified
Current StatusPoole WRC - BAS0156Certified from 12.07.2018 to present |
| Ratfyn WRC | Lime Treatment, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0157 | Certified
Current StatusRatfyn WRC - BAS0157Certified from 12.07.2018 to present |
| Taunton (Ham) WRC | Anaerobic Digestion, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0158 | Certified
Current StatusTaunton (Ham) WRC - BAS0158Certified from 12.07.2018 to present |
| Trowbridge WRC | Advanced Anaerobic Digestion, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0159 | Certified
Current StatusTrowbridge WRC - BAS0159Certified from 12.07.2018 to present |
| West Huntspill WRC | Lime Treatment, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0160 | Certified
Current StatusWest Huntspill WRC - BAS0160Certified from 12.07.2018 to present |
| Yeovil Vale Road BRC | Lime Treatment, Cake | Wessex Water Services Ltd | Wessex Water Services Ltd | Wessex Water Services Ltd | BAS0161 | Certified
Current StatusYeovil Vale Road BRC - BAS0161Certified from 12.07.2018 to present |
| Aldwarke | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0162 | Certified
Current StatusAldwarke - BAS0162Certified from 14.12.2018 to present |
| Blackburn Meadows | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0163 | Certified
Current StatusBlackburn Meadows - BAS0163Certified from 14.12 2018 to present |
| Bridlington | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0164 | Certified
Current StatusBridlington - BAS0164Certified from 14.12.2019 to present |
| Calder Vale | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0165 | Certified
Current StatusCalder Vale - BAS0165Certified from 14.12.2018 to present |
| Esholt | Advanced Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0166 | Certified
Current StatusEsholt - BAS0166Certified from 14.12.2018 to present |
| Hull | Anaerobic Digestion with Lime Addition, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0167 | Certified
Current StatusHull - BAS0167Certified from 14.12.2018 to present |
| Knostrop | Anaerobic Digestion with Lime Addition, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0168 | Certified
Current StatusKnostrop - BAS0168Certified from 14.12.2019 to present |
| Lundwood | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0169 | Certified
Current StatusLundwood - BAS0169Certified from 14.12.2018 to present |
| Naburn | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0170 | Certified
Current StatusNaburn - BAS0170Certified from 14.12.2018 to present |
| Old Whittington | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0171 | Certified
Current StatusOld Whittington - BAS0171Certified from 14.12.2018 to present |
| Sandall | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0172 | Certified
Current StatusSandall - BAS0172Certified from 14.12.2018 to present |
| Staveley | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0174 | Certified
Current StatusStaveley - BAS0174Certified from 14.12.2018 to present |
| Woodhouse Mill | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0175 | Certified
Current StatusWoodhouse Mill - BAS0175Certified from 14.12.2018 to present |
| Cliff Quay | Advanced Anaerobic Digestion, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0177 | Certified
Current StatusCliff Quay - BAS0177Certified from 10.12.2020 to present |
| Mitchell Laithes | Anaerobic Digestion, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0178 | Certified
Current StatusMitchell Laithes - BAS0178Certified from 12.03.2021 to present |
| Barnhurst/Old Hatton's Farm | Anaerobic Digestion with Lime Addition, Cake | Severn Trent Water | Severn Trent Water | Severn Trent Water | BAS0043 | Certified
Current StatusBarnhurst/Old Hatton's Farm - BAS0043Certified from 25.05.2017 to present |
| Whilton | Lime Treatment, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0179 | Certified
Current StatusWhilton - BAS0179Certified from 17.05.2021 to present |
| Afan | Advanced Anaerobic Digestion, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0019 | Certified
Current StatusAfan - BAS0019Certified from 23.11.2016 to present |
| Spalding | Lime Treatment, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0013 | Not certified
Current StatusSpalding - BAS0013Certified from 10.12.2018 to 09.12.2020 |
| Thetford | Lime Treatment, Cake | Anglian Water | Anglian Water | Anglian Water | BAS0014 | Not certified
Current StatusThetford - BAS0014Certified from 10.12.2015 to 09.12.2020 |
| Eign | Lime Treatment, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0021 | Not certified
Current StatusEign - BAS0021Certified from 23.11.2018 to 08.12.2020 |
| Five Fords | Lime Treatment, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0023 | Not certified
Current StatusFive Fords - BAS0023Certified from 07.02.2020 to 22.11.2020 |
| Queensferry | Lime Treatment, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0024 | Not certified
Current StatusQueensferry - BAS0024Certified from 23.11.2018 to 22.11.2020 |
| Hillhouse Farm | Lime Treatment, Cake | Enva Resource Management | Enva Resource Management | Enva Resource Management | BAS0025 | Not certified
Current StatusHillhouse Farm - BAS0025Certified from 20.02.2020 to 19.02.2021 |
| West Shaws Farm | Lime Treatment, Cake | Enva Resource Management | Enva Resource Management | Enva Resource Management | BAS0026 | Not certified
Current StatusWest Shaws Farm - BAS0026Certified from 11.05.2020 to 19.02.2021 |
| Fleet | Lime Treatment, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0125 | Not certified
Current StatusFleet - BAS0125Certified from 18.08.2016 to 18.08.2020 |
| Guildford | Lime Treatment, Cake | Thames Water Utilities Ltd | Thames Water Utilities Ltd | Thames Water Utilities Ltd | BAS0126 | Not certified
Current StatusGuildford - BAS0126Certified from 18.08.2016 to 18.08.2020 |
| Selby | Lime Treatment, Cake | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0173 | Not certified
Current StatusSelby - BAS0173Certified from 14.12.2018 to 13.12.2020 |
| Huddersfield | Anaerobic Digestion with Lime Addition | Yorkshire Water | Yorkshire Water | Yorkshire Water | BAS0181 | Certified
Current StatusHuddersfield - BAS0181Certified from 17.09.2021 to present |
| Cog Moors | Advanced Anaerobic Digestion, Cake | Dwr Cymru | Dwr Cymru | Dwr Cymru | BAS0181 | Certified
Current StatusCog Moors - BAS0181Certified from 23.11.2017 to 22.11.2019 and 14.06.2021 to present |
| Wood Farm | Lime Treatment, Cake | 4Recycling Ltd | 4Recycling Ltd | 4Recycling Ltd | BAS0176 | Not Certified
Current StatusWood Farm - BAS0176Certified from 08.12.2020 to 07.12.2021 |
| Tiverton STC | Lime Treatment, Cake | South West Water | South West Water | South West Water | BAS0183 | Certified
Current StatusTiverton STC - BAS0183Certified from 11.02.2022 to present |