World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United Kingdom

1,877 inventory records · European Environment Agency — Waterbase-UWWTD, data call 2019 (v07.01)

Data years: 2018. The inventory date does not establish current operation.

1,877 results

Name	Native size	Year
COLWYN BAY / LLANDUDNO STWUKWAWA_WW_TP000095	88,731 population equivalent (p.e.)	2018
MAIDENHEAD, BRAYWICK ROAD, MAID STW"UKENTH_TWU_TP000104	87,588 population equivalent (p.e.)	2018
TROWBRIDGE STWUKENSW_WXW_TP000092	87,100 population equivalent (p.e.)	2018
BARNSLEY (LUNDWOOD) STWUKENNE_YW_TP000102	87,039 population equivalent (p.e.)	2018
NEWBURY STWUKENTH_TWU_TP000116	86,398 population equivalent (p.e.)	2018
SITTINGBOURNE STWUKENSO_SW_TP000032	85,976 population equivalent (p.e.)	2018
NEWTON ABBOT / TEIGNMOUTH STWUKENSW_SWS_TP000051	85,364 population equivalent (p.e.)	2018
Hoylake (NORTH WIRRAL [MEOLS] ) STWUKENNW_UU_TP000095	84,685 population equivalent (p.e.)	2018
HYDE STWUKENNW_UU_TP000067	84,540 population equivalent (p.e.)	2018
MERTHYR TYDFIL STWUKWAWA_WW_TP000011	84,328 population equivalent (p.e.)	2018
RHYL KINMEL BAY TOWYN STWUKWAWA_WW_TP000093	82,454 population equivalent (p.e.)	2018
ST IVES AND PENZANCE STWUKENSW_SWS_TP000031	82,412 population equivalent (p.e.)	2018
LEIGH STWUKENNW_UU_TP000078	81,857 population equivalent (p.e.)	2018
SPALDING STWUKENAN_AW_TP000242	81,182 population equivalent (p.e.)	2018
BARROW-IN-FURNESS STWUKENNW_UU_TP000012	80,774 population equivalent (p.e.)	2018
Antrim (Milltown)UKNI_TP00001	80,624 population equivalent (p.e.)	2018
KENDAL STWUKENNW_UU_TP000070	80,043 population equivalent (p.e.)	2018
STIRLING WWTWUKSC_TP00176	80,000 population equivalent (p.e.)	2018
STRATFORD STWUKENMI_ST_TP000206	80,000 population equivalent (p.e.)	2018
MELTON MOWBRAY STWUKENMI_ST_TP000152	80,000 population equivalent (p.e.)	2018
LOUGHBOROUGH STWUKENMI_ST_TP000137	80,000 population equivalent (p.e.)	2018
BRANCOTE STWUKENMI_ST_TP000036	80,000 population equivalent (p.e.)	2018
TOTON STWUKENMI_ST_TP000216	80,000 population equivalent (p.e.)	2018
NEWARK STWUKENMI_ST_TP000158	80,000 population equivalent (p.e.)	2018
Lisburn (New Holland)UKNI_TP00052	80,000 population equivalent (p.e.)	2018
WASHINGTON STWUKENNE_NU_TP000055	79,798 population equivalent (p.e.)	2018
SALISBURY STWUKENSW_WXW_TP000074	79,367 population equivalent (p.e.)	2018
HORSHAM STWUKENSO_SW_TP000088	79,207 population equivalent (p.e.)	2018
Dungannon (Moygashel)UKNI_TP00011	78,826 population equivalent (p.e.)	2018
WOKING STWUKENTH_TWU_TP000155	78,319 population equivalent (p.e.)	2018
SOUTHAMPTON North East (Portswood) STWUKENSO_SW_TP000012	78,096 population equivalent (p.e.)	2018
BISHOPS STORTFORD, BISHOP'S STO STW"UKENTH_TWU_TP000020	76,600 population equivalent (p.e.)	2018
NEWBRIDGE WWTWUKSC_TP00143	76,133 population equivalent (p.e.)	2018
GRANTHAM STWUKENAN_AW_TP000106	76,000 population equivalent (p.e.)	2018
WORKINGTON STWUKENNW_UU_TP000139	75,866 population equivalent (p.e.)	2018
WITHAM STWUKENAN_AW_TP000296	75,600 population equivalent (p.e.)	2018
ERNESETTLE AND SALTASH STWUKENSW_SWS_TP000022	75,561 population equivalent (p.e.)	2018
MACCLESFIELD STWUKENNW_UU_TP000084	75,410 population equivalent (p.e.)	2018
TOTTON, MARCHWOOD, HYTHE, CADNAM STW"UKENSO_SW_TP000011	75,098 population equivalent (p.e.)	2018
NEWTON STWUKENNE_NU_TP000003	74,848 population equivalent (p.e.)	2018
KIRKCALDY WWTWUKSC_TP00111	73,000 population equivalent (p.e.)	2018
SALE STWUKENNW_UU_TP000108	72,188 population equivalent (p.e.)	2018
BARSTON STWUKENMI_ST_TP000020	70,000 population equivalent (p.e.)	2018
CANNOCK STWUKENMI_ST_TP000048	70,000 population equivalent (p.e.)	2018
YEOVIL STWUKENSW_WXW_TP000111	68,917 population equivalent (p.e.)	2018
CHORLEY STWUKENNW_UU_TP000032	68,838 population equivalent (p.e.)	2018
CYNON VALLEY STWUKWAWA_WW_TP000022	68,792 population equivalent (p.e.)	2018
HAM HILL STWUKENSO_SW_TP000052	68,535 population equivalent (p.e.)	2018
NEWQUAY STWUKENSW_SWS_TP000050	68,513 population equivalent (p.e.)	2018
SKELMERSDALE STWUKENNW_UU_TP000113	68,513 population equivalent (p.e.)	2018
PHILIPSHILL S.T.W.UKSC_TP00159	67,590 population equivalent (p.e.)	2018
SOUTHAMPTON SOUTH EAST (WOOLSTON) STWUKENSO_SW_TP000007	67,005 population equivalent (p.e.)	2018
WALTON-LE-DALE STWUKENNW_UU_TP000123	66,308 population equivalent (p.e.)	2018
ANDOVER STWUKENSO_SW_TP000006	65,329 population equivalent (p.e.)	2018
QUEENSFERRY STWUKWAWA_WW_TP000119	65,181 population equivalent (p.e.)	2018
CANTERBURY STWUKENSO_SW_TP000033	65,179 population equivalent (p.e.)	2018
CHECKLEY STWUKENMI_ST_TP000050	65,000 population equivalent (p.e.)	2018
PONTEFRACT AND FERRYBRIDGE STWUKENNE_YW_TP000131	64,980 population equivalent (p.e.)	2018
CLEVEDON / NAILSEA / YATTON STWUKENSW_WXW_TP000044	64,593 population equivalent (p.e.)	2018
PLYMPTON STWUKENSW_SWS_TP000059	64,551 population equivalent (p.e.)	2018
LIVERPOOL SOUTH [WOOLTON]) STWUKENNW_UU_TP000080	64,076 population equivalent (p.e.)	2018
BARNSTAPLE STWUKENSW_SWS_TP000002	63,534 population equivalent (p.e.)	2018
HAMILTON S.T.W.UKSC_TP00091	63,106 population equivalent (p.e.)	2018
BURGESS HILL STWUKENSO_SW_TP000081	62,828 population equivalent (p.e.)	2018
ROSSENDALE STWUKENNW_UU_TP000104	62,748 population equivalent (p.e.)	2018
DunmurryUKNI_TP00039	62,479 population equivalent (p.e.)	2018
CAMBORNE / REDRUTH STWUKENSW_SWS_TP000010	62,188 population equivalent (p.e.)	2018
HILLHOUSE STWUKENNW_UU_TP000062	62,001 population equivalent (p.e.)	2018
PERSLEY WWTPUKSC_TP00156	61,667 population equivalent (p.e.)	2018
CHRISTCHURCH STWUKENSW_WXW_TP000024	61,602 population equivalent (p.e.)	2018
BROMSGROVE STWUKENMI_ST_TP000247	60,793 population equivalent (p.e.)	2018
GRAVESEND STWUKENSO_SW_TP000141	60,520 population equivalent (p.e.)	2018
BURNHAM-ON-SEA / HIGHBRIDGE STWUKENSW_WXW_TP000098	60,183 population equivalent (p.e.)	2018
NORTHWICH STWUKENNW_UU_TP000097	60,165 population equivalent (p.e.)	2018
REIGATE STWUKENTH_TWU_TP000123	60,057 population equivalent (p.e.)	2018
ALLOA WWTWUKSC_TP00006	60,000 population equivalent (p.e.)	2018
NEWTHORPE STWUKENMI_ST_TP000160	60,000 population equivalent (p.e.)	2018
ALFRETON STWUKENMI_ST_TP000003	60,000 population equivalent (p.e.)	2018
EXMOUTH STWUKENSW_SWS_TP000024	59,978 population equivalent (p.e.)	2018
NEWHAVEN, LEWES STW"UKENSO_SW_TP000082	59,816 population equivalent (p.e.)	2018
ELSECAR, LUND HULL AND WOMBWELL STW"UKENNE_YW_TP000140	59,340 population equivalent (p.e.)	2018
LLANELLI STWUKWAWA_WW_TP000077	58,067 population equivalent (p.e.)	2018
LLANDYRNOG S STWUKWAWA_WW_TP000117	57,956 population equivalent (p.e.)	2018
SCARBOROUGH STWUKENNE_YW_TP000039	57,806 population equivalent (p.e.)	2018
NORTHFLEET STWUKENSO_SW_TP000142	56,966 population equivalent (p.e.)	2018
GOWERTON STWUKWAWA_WW_TP000043	56,653 population equivalent (p.e.)	2018
SHOREHAM / PORTSLADE STWUKENSO_SW_TP000092	56,524 population equivalent (p.e.)	2018
KINNEIL KERSE WWTWUKSC_TP00109	55,900 population equivalent (p.e.)	2018
BOSTON STWUKENAN_AW_TP000023	55,556 population equivalent (p.e.)	2018
HUNTINGDON STWUKENAN_AW_TP000139	55,140 population equivalent (p.e.)	2018
ILKESTON STWUKENMI_ST_TP000116	55,000 population equivalent (p.e.)	2018
LEEK STWUKENMI_ST_TP000130	55,000 population equivalent (p.e.)	2018
MALTBY STWUKENMI_ST_TP000142	55,000 population equivalent (p.e.)	2018
JAYWICK STWUKENAN_AW_TP000148	54,838 population equivalent (p.e.)	2018
CLACTON STWUKENAN_AW_TP000056	54,838 population equivalent (p.e.)	2018
CARBARNS S.T.W.UKSC_TP00034	54,035 population equivalent (p.e.)	2018
FAVERSHAM STWUKENSO_SW_TP000055	53,632 population equivalent (p.e.)	2018
PLYMOUTH (CAMELS HEAD) STWUKENSW_SWS_TP000056	53,419 population equivalent (p.e.)	2018
LYMINGTON, PENNINGTON, NEW MILTON STW"UKENSO_SW_TP000002	53,126 population equivalent (p.e.)	2018
DUNSTABLE STWUKENAN_AW_TP000084	53,000 population equivalent (p.e.)	2018

Regulatory context

Partial review. This is not an exhaustive review of applicable law.

United Kingdom: four jurisdictions

England and Wales have their respective environmental permitting authorities. In Scotland, water activities moved to EASR on 1 November 2025; records may retain CAR identifiers. Northern Ireland has a discharge consent regime under the Water (Northern Ireland) Order 1999. Each profile's constituent nation still needs confirmation.

Determine England, Wales, Scotland or Northern Ireland before assigning authority and regime.
Check the permit, potential exemptions and discharge conditions.

Environment Agency · England
Natural Resources Wales · Wales
SEPA · EASR water activitiesOfficial guidance · Scotland
SEPA · public register and legacy CAR identifiersOfficial register · Scotland
DAERA · regulating water dischargesOfficial guidance · Northern Ireland

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.