Storm overflow register · 2025 annual return

Severn Trent Water storm overflows, 2025

Severn Trent Water reported 2,452 storm overflows in England for 2025. Together they recorded 36,471 spills over 200,361 hours, an average of 14.9 spills per overflow against 20.4 across England. That ranks 2 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 41% on 2024.

429 overflows did not spill · 72 spilled more than 60 times · 2,342 had monitors working for 90% of the year or more · 435 sewage treatment works with overflows

Hours spilling by month, 2025

Hours spilling, all Severn Trent Water overflows, from the start/stop records. Spills running across a month end are split between the months.

All Severn Trent Water storm overflows

Sorted by hours spilling. Open an overflow for its permit, location, reasons for high spills and improvement status.

Overflow	Discharges to	Spills 2025	Hours 2025	Spills vs 2024	Monitor uptime
Stoney Stanton STW Storm tank at sewage works Sewage works Stoney Stanton Company site name STONEY STANTON STW (SSTO) EA ID / permit SVT02216 · T/50/46146/R Outlet location SP5056795109 (OS grid reference) · View on Apple Maps WFD catchment Soar from Soar Brook to Thurlaston Brook (GB104028042620) 2024 spills / hours 57 / 574 Long-term average 53.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 253 hours spilling →	River Soar	24	253	down 58%	100%
Skegby Sewage Treatment Works Storm tank at sewage works Sewage works Skegby Company site name SKEGBY STW (SSTO) EA ID / permit SVT02059 · T/71/45942/R Outlet location SK4969461467 (OS grid reference) · View on Apple Maps WFD catchment Meden from Source to Sookholme Brook (GB104028058020) 2024 spills / hours 61 / 420 Long-term average 52.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 253 hours spilling →	Skegby Brook	37	253	down 39%	98%
Grindleford Sewage P S Storm discharge at pumping station Company site name GRINDLEFORD (SSO) EA ID / permit SVT01015 · T/38/40242/O Outlet location SK2436077350 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Westend to Wye (GB104028057880) 2024 spills / hours 24 / 95 Long-term average 37.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Sensor failure / issue · Resolved - Mar Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 251 hours spilling →	River Trent	35	251	up 46%	78%
Whatcote Church Lane SPS Storm discharge at pumping station Company site name WHATCOTE - CHURCH LANE (SSO) EA ID / permit SVT01424 · S/14/09243/O Outlet location SP2993244368 (OS grid reference) · View on Apple Maps WFD catchment Wagtail Bk - source to conf R Stour (Warks) (GB109054039890) 2024 spills / hours 39 / 479 Long-term average 29.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 249 hours spilling →	Tributary of Wagtail Brook	22	249	down 44%	100%
Coleshill Wastewater Treatment Wrks Storm tank at sewage works Sewage works Coleshill Wastewater Treatment Wrks Company site name COLESHILL STW (SSTO) EA ID / permit SVT00615 · T/12/36068/R Outlet location SP1979691209 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 56 / 578 Long-term average 63.3 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 247 hours spilling →	River Tame	31	247	down 45%	100%
Badgeworth - Badgeworth Road SPS Storm discharge at pumping station Company site name BADGEWORTH - BADGEWORTH ROAD (SSO) EA ID / permit SVT00156 · S/20/23190/O Outlet location SO9046019954 (OS grid reference) · View on Apple Maps WFD catchment Norman's Bk - source to conf Hatherley Bk (GB109054032780) 2024 spills / hours 43 / 351 Long-term average 33.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 246 hours spilling →	Ham Brook	20	246	down 53%	99%
Cromford Road - CSO No 3 Overflow on sewer network Company site name LANGLEY MILL - CROMFORD ROAD 96 (CSO) EA ID / permit SVT00684 · T/61/12266/O Outlet location SK4528147570 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Source to Nethergreen Brook (GB104028052740) 2024 spills / hours 4 / 10 Long-term average 48.1 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 243 hours spilling →	River Erewash	63	243	up 1475%	96%
Toton Wastewater Treatment Works Storm tank at sewage works Sewage works Toton Company site name TOTON STW (SSTO) EA ID / permit SVT02337 · T/61/45798/R Outlet location SK5082433616 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 69 / 783 Long-term average 57.0 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 242 hours spilling →	River Erewash	24	242	down 65%	99%
Barston Sewage Treatment Works Storm tank at sewage works Sewage works Barston Company site name BARSTON STW (SSTO) EA ID / permit SVT00188 · T/11/35994/R Outlet location SP1912680058 (OS grid reference) · View on Apple Maps WFD catchment Blythe from Temple Balsall Brook to Patrick Bridge (GB104028042571) 2024 spills / hours 32 / 180 Long-term average 36.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 241 hours spilling →	Eastcote Brook	18	241	down 44%	100%
Ockbrook - Nooning Lane (Draycott) (Eso) Storm discharge at pumping station EA ID / permit SVT01701 · Permit application submitted Outlet location SK4300533418 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 60 / 437 Long-term average 56.6 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 240 hours spilling →	Tributary of Cecilly Brook	54	240	down 10%	100%
Braunston STW Storm tank at sewage works Sewage works Braunston Company site name BRAUNSTON STW (SSTO) EA ID / permit SVT00332 · S/12/26147/R Outlet location SP5304865701 (OS grid reference) · View on Apple Maps WFD catchment Leam - source to conf Rains Bk (GB109054044120) 2024 spills / hours 61 / 622 Long-term average 48.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 239 hours spilling →	River Leam	28	239	down 54%	100%
Gallows Inn Combined Sewer Overflow Storm discharge at pumping station Company site name ILKESTON - GALLOWS INN PLAYING FLD (SO) EA ID / permit SVT00940 · T/61/40302/O Outlet location SK4790339890 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 51 / 576 Long-term average 43.2 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 239 hours spilling →	River Erewash	31	239	down 39%	100%
Mh Near Cromford Mill Pond Overflow on sewer network Company site name CROMFORD - VIA GELLIA (CSO) EA ID / permit SVT01550 · DT/2188 Outlet location SK2900057100 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 78 / 287 Long-term average 55.3 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 236 hours spilling →	Receiving Water Not Defined	58	236	down 26%	92%
Alvechurch Sewage Treatment Works Storm tank at sewage works Sewage works Alvechurch Company site name ALVECHURCH STW (SSTO) EA ID / permit SVT00066 · S/15/25875/R Outlet location SP0325271709 (OS grid reference) · View on Apple Maps WFD catchment Arrow - source to Spernall Hall Fm, Studley (GB109054043890) 2024 spills / hours 63 / 479 Long-term average 49.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 234 hours spilling →	River Arrow	28	234	down 56%	98%
Countesthorpe STW Storm tank at sewage works Sewage works Countesthorpe Company site name COUNTESTHORPE STW (SSTO) EA ID / permit SVT00648 · T/51/45760/R Outlet location SP5929796368 (OS grid reference) · View on Apple Maps WFD catchment Countesthorpe Brook from Source to Sence (GB104028042560) 2024 spills / hours 78 / 926 Long-term average 76.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 234 hours spilling →	Tributary of River Sence	28	234	down 64%	97%
East Common Lane CSO Overflow on sewer network Company site name SCUNTHORPE - EAST COMMON LN (CSO) EA ID / permit SVT00821 · T/81/45130/O Outlet location SE9164609511 (OS grid reference) · View on Apple Maps WFD catchment Bottesford Beck Catchment (trib of Trent) (GB104028064290) 2024 spills / hours 76 / 270 Long-term average 85.6 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement UWWTR improvement completed, Operational improvement completed Volume & pollution Estimate from 231 hours spilling →	Tributary of Bottesford Beck	61	231	down 20%	100%
Worksop - Manton STW Storm tank at sewage works Sewage works Worksop Manton Company site name WORKSOP - MANTON STW (SSTO) EA ID / permit SVT02636 · T/75/45222/R Outlet location SK6100978889 (OS grid reference) · View on Apple Maps WFD catchment Ryton from Anston Brook to Idle (GB104028058100) 2024 spills / hours 25 / 276 Long-term average 42.0 spills a year (monitored since 2021) Monitor below 90% Installation set-up/design issue · Resolved - Sep Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 230 hours spilling →	River Ryton	20	230	down 20%	33%
Scotter STW Storm tank at sewage works Sewage works Scotter Company site name SCOTTER STW (SSTO) EA ID / permit SVT01956 · T/80/45390/R Outlet location SE8909200020 (OS grid reference) · View on Apple Maps WFD catchment Eau from Manton Sewer to Trent (GB104028058000) 2024 spills / hours 33 / 452 Long-term average 11.8 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 230 hours spilling →	River Eau	26	230	down 21%	100%
Sneinton Sewage Pumping Station Storm discharge at pumping station Company site name SNEINTON - SNEINTON PS (SSTO) EA ID / permit SVT02083 · T/64/45209/O Outlet location SK5907038770 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 33 / 319 Long-term average 37.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 230 hours spilling →	River Trent	19	230	down 42%	100%
Stoke Orchard Sewage Treatment Wrks Storm tank at sewage works Sewage works Stoke Orchard Sewage Treatment Wrks Company site name STOKE ORCHARD STW (SSTO) EA ID / permit SVT02202 · S/17/26029/R Outlet location SO9246726886 (OS grid reference) · View on Apple Maps WFD catchment Swilgate - source to conf R Avon (GB109054039780) 2024 spills / hours 51 / 332 Long-term average 40.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 230 hours spilling →	Hyde Brook	19	230	down 63%	100%
Newport Sewage Treatment Works Storm tank at sewage works Sewage works Newport Company site name NEWPORT STW (SSTO) EA ID / permit SVT01640 · S/04/09049/R Outlet location SJ7357519253 (OS grid reference) · View on Apple Maps WFD catchment Strine Bk - source to conf Wall Bk (GB109054050160) 2024 spills / hours 58 / 558 Long-term average 45.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 228 hours spilling →	Strine Brook	24	228	down 59%	99%
Ellesmere Wharf Meadow STW Storm tank at sewage works Sewage works Ellesmere Wharf Meadow Company site name ELLESMERE - WHARF MEADOW STW (SSTO) EA ID / permit SVT00858 · S/03/56028/R Outlet location SJ3963234077 (OS grid reference) · View on Apple Maps WFD catchment Tetchill Bk - source to conf R Perry (GB109054055000) 2024 spills / hours 61 / 489 Long-term average 49.5 spills a year (monitored since 2022) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 227 hours spilling →	Tetchill Brook	38	227	down 38%	99%
Old Station Road Pumping Station Storm discharge at pumping station Company site name HAMPTON IN ARDEN - OLD STATION RD (SSO) EA ID / permit SVT01719 · T/11/02379/O Outlet location SP2020081900 (OS grid reference) · View on Apple Maps WFD catchment Blythe from Patrick Bridge to R Tame (GB104028042572) 2024 spills / hours 42 / 549 Long-term average 29.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 227 hours spilling →	River Blythe (Trib)	18	227	down 57%	100%
Edwinstowe STW Storm tank at sewage works Sewage works Edwinstowe Company site name EDWINSTOWE STW (SSTO) EA ID / permit SVT00849 · T/70/45573/R Outlet location SK6402066940 (OS grid reference) · View on Apple Maps WFD catchment Maun from Vicar Water to Rainworth Water (GB104028058040) 2024 spills / hours 41 / 258 Long-term average 39.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 226 hours spilling →	River Maun	46	226	up 12%	100%
Newthorpe Sewage Treatment Works Inlet overflow at sewage works Sewage works Newthorpe Company site name NEWTHORPE STW (CSO&EO) EA ID / permit SVT01644 · T/61/45995/R Outlet location SK4777144650 (OS grid reference) · View on Apple Maps WFD catchment Gilt Brook Catchment (trib of Erewash) (GB104028052570) 2024 spills / hours 70 / 572 Long-term average 53.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 225 hours spilling →	Gilt Brook	47	225	down 33%	100%
Various PS'S & Csos-Stoney Stanton Storm discharge at pumping station Company site name ELMESTHORPE - BOSTOCK CLOSE PS (CSO) EA ID / permit SVT02405 · EPRHB3996RV Outlet location SP5150095900 (OS grid reference) · View on Apple Maps WFD catchment Thurlaston Brook Catchment (trib of Soar) (GB104028046940) 2024 spills / hours 49 / 545 Long-term average 44.9 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 224 hours spilling →	River Soar Or Tribs	30	224	down 39%	100%
Barlaston - Barlaston SSO Overflow on sewer network EA ID / permit SVT02659 · T/01/30307/O Outlet location SJ8795038800 (OS grid reference) · View on Apple Maps WFD catchment River Trent from Fowlea Brook to Tittensor (GB104028053271) 2024 spills / hours 11 / 67 Long-term average 43.0 spills a year (monitored since 2025) High-spill reason (company) Performance - Asset power failure Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 223 hours spilling →	River Trent	43	223	up 291%	100%
Norton STW Inlet overflow at sewage works (with treatment) Sewage works Norton Company site name NORTON (STW) EA ID / permit SVT01678 · T/73/45542/R Outlet location SK5733071690 (OS grid reference) · View on Apple Maps WFD catchment Poulter from Source to Millwood Brook (GB104028058130) Treatment Reed bed 2024 spills / hours 65 / 834 Long-term average 31.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 223 hours spilling →	River Poulter	43	223	down 34%	99%
Whitwick - Parsonwood Hill SSO Storm discharge at pumping station Company site name WHITWICK - PARSONWOOD HILL (CSO) EA ID / permit SVT02550 · T/57/46238/O Outlet location SK4329416570 (OS grid reference) · View on Apple Maps WFD catchment Grace Dieu Brook Catchment (trib of Black Brook) (GB104028047090) 2024 spills / hours 48 / 469 Long-term average 45.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 222 hours spilling →	Grace Dieu Brook	25	222	down 48%	100%
Hookagate Pumping Station Storm discharge at pumping station Company site name HOOK-A-GATE (SSO) EA ID / permit SVT01175 · S/02/55419/O Outlet location SJ4660009250 (OS grid reference) · View on Apple Maps WFD catchment Rea Bk - conf Pontesford Bk to conf R Severn (GB109054049630) 2024 spills / hours 25 / 154 Long-term average 32.5 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 220 hours spilling →	Rea Brook	24	220	down 4%	100%
Weston Underwood STW Storm tank at sewage works Sewage works Weston Underwood Company site name WESTON UNDERWOOD STW (SSTO) EA ID / permit SVT02523 · T/47/45561/R Outlet location SK2889842460 (OS grid reference) · View on Apple Maps WFD catchment Markeaton Brook from Source to Mackworth Brook (GB104028052850) 2024 spills / hours 3 / 3.5 Long-term average 89.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 219 hours spilling →	Greenlane Brook	27	219	up 800%	100%
Findern STW Storm tank at sewage works Sewage works Findern Company site name FINDERN STW (SSTO) EA ID / permit SVT00903 · T/36/45583/R Outlet location SK3175230220 (OS grid reference) · View on Apple Maps WFD catchment Twyford Brook Catchment (trib of Trent) (GB104028053140) 2024 spills / hours 19 / 98 Long-term average 23.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 219 hours spilling →	Hellbrook Trib of Twyfordbrook	34	219	up 79%	96%
Austrey - Warton Lane SPS (CSO) Storm discharge at pumping station Company site name AUSTREY - WARTON LANE PS (CSO) EA ID / permit SVT00149 · EPRLB3493VK Outlet location SK2893806407 (OS grid reference) · View on Apple Maps WFD catchment Anker from River Sence to River Tame (GB104028046460) 2024 spills / hours 106 / 754 Long-term average 118.9 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 218 hours spilling →	Tributary of the River Anker	48	218	down 55%	98%
Darley Bridge CSO Overflow on sewer network Company site name DARLEY BRIDGE - MAIN ROAD/WENSLEES (CSO) EA ID / permit SVT00734 · EPRKB3593DE Outlet location SK2705662042 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 72 / 469 Long-term average 84.3 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 218 hours spilling →	River Derwent	52	218	down 28%	98%
Cubley Sewage Treatment Works Inlet overflow at sewage works Sewage works Cubley Company site name CUBLEY (CSO) EA ID / permit SVT00711 · T/33/35576/R Outlet location SK1675638015 (OS grid reference) · View on Apple Maps WFD catchment Foston Brook catchment (trib of Dove) (GB104028052460) 2024 spills / hours 36 / 188 Long-term average 18.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 217 hours spilling →	Bentley Brook	30	217	down 17%	99%
Edale Sewage Treatment Works Inlet overflow at sewage works Sewage works Edale Company site name EDALE STW (CSO) EA ID / permit SVT00842 · T/38/45929/R Outlet location SK1242085198 (OS grid reference) · View on Apple Maps WFD catchment Noe from Source to Peakshole Water (GB104028057890) 2024 spills / hours 113 / 1,000 Long-term average 95.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 217 hours spilling →	River Noe	20	217	down 82%	99%
Cromford - Market Place CSO Overflow on sewer network Company site name CROMFORD - MARKET PLACE (CSO) EA ID / permit SVT00683 · T/40/21424/O Outlet location SK2954256934 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 61 / 277 Long-term average 60.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 217 hours spilling →	Tributary of Cromford Canal	58	217	down 5%	100%
Church Westbury CSO Overflow on sewer network Company site name WESTBURY-ON-SEVERN - CHURCH (CSO) EA ID / permit SVT00560 · TSC502 Outlet location SO7157813760 (OS grid reference) · View on Apple Maps WFD catchment Westbury Bk - source to mouth (GB109054032770) 2024 spills / hours 49 / 569 Long-term average 31.4 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 216 hours spilling →	Westbury Brook	27	216	down 45%	100%
Padley Hall CSO Overflow on sewer network Company site name RIPLEY - HAMMERSMITH (PADLEY HALL) (CSO) EA ID / permit SVT01750 · T/41/45400/O Outlet location SK3952351780 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 42 / 79 Long-term average 66.0 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 216 hours spilling →	The Hartshay Brook	63	216	up 50%	100%
Warwick-Longbridge STW Storm tank at sewage works Sewage works Warwick Longbridge Company site name WARWICK - LONGBRIDGE STW (SSTO) EA ID / permit SVT02457 · S/13/26328/R Outlet location SP2765063210 (OS grid reference) · View on Apple Maps WFD catchment Gog Bk - source to conf R Avon (GB109054043800) 2024 spills / hours 87 / 840 Long-term average 66.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement ongoing Volume & pollution Estimate from 215 hours spilling →	River Avon & Fishers Brook	29	215	down 67%	100%
Alfreton Sewage Treatment Works Storm tank at sewage works Sewage works Alfreton Company site name ALFRETON STW (SSTO) EA ID / permit SVT00047 · T/41/45824/R Outlet location SK4121856847 (OS grid reference) · View on Apple Maps WFD catchment Alfreton Brook from Westwood Brook to Amber (GB104028052320) 2024 spills / hours 71 / 350 Long-term average 78.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 214 hours spilling →	Alfreton Brook	54	214	down 24%	100%
Scunthorpe (Yaddlethorpe) STW Storm tank at sewage works Sewage works Scunthorpe Company site name SCUNTHORPE - YADDLETHORP STW (SSTO) EA ID / permit SVT01970 · T/81/46406/R Outlet location SE8733305978 (OS grid reference) · View on Apple Maps WFD catchment Bottesford Beck Catchment (trib of Trent) (GB104028064290) 2024 spills / hours 21 / 149 Long-term average 28.4 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement UWWTR improvement completed Volume & pollution Estimate from 213 hours spilling →	Bottesford Beck	32	213	up 52%	100%
Loughborough Sewage Treatment Works Storm tank at sewage works Sewage works Loughborough Company site name LOUGHBOROUGH STW (SSTO) EA ID / permit SVT01420 · T/57/45484/R Outlet location SK5314021500 (OS grid reference) · View on Apple Maps WFD catchment Wood Brook Catchment (trib of Soar) (GB104028047080) 2024 spills / hours 42 / 389 Long-term average 46.7 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 213 hours spilling →	Wood Brook	33	213	down 21%	100%
Froghall Sewage Treatment Works Inlet overflow at sewage works Sewage works Froghall Company site name FROGHALL STW (CSO) EA ID / permit SVT00934 · T/30/35538/R Outlet location SK0255046950 (OS grid reference) · View on Apple Maps WFD catchment Churnet from Consall to River Dove (GB104028052652) 2024 spills / hours 79 / 341 Long-term average 83.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 212 hours spilling →	River Churnet	66	212	down 16%	100%
Atherstone Sewage Treatment Works Inlet overflow at sewage works Sewage works Atherstone Company site name ATHERSTONE STW (SSTO) EA ID / permit SVT00145 · T/19/35541/R Outlet location SP3173898110 (OS grid reference) · View on Apple Maps WFD catchment Anker from Wem Brook to River Sence (GB104028046430) 2024 spills / hours 138 / 1,150 Long-term average 96.6 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement completed, Operational improvement completed Volume & pollution Estimate from 211 hours spilling →	Tributary of River Anker	47	211	down 66%	98%
Redditch - Spernal STW Storm tank at sewage works Sewage works Redditch Spernal Company site name REDDITCH - SPERNAL STW (SSTO) EA ID / permit SVT02125 · S/15/26260/R Outlet location SP0846762622 (OS grid reference) · View on Apple Maps WFD catchment Arrow - Spernall Hall Fm, Studley to conf R Alne (GB109054043780) 2024 spills / hours 67 / 792 Long-term average 46.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 211 hours spilling →	River Arrow	22	211	down 67%	100%
Pasture Lock CSO Overflow on sewer network Company site name SANDIACRE - PASTURE LOCK (CSO) EA ID / permit SVT01764 · EPRAP3421GQ Outlet location SK4831137875 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 134 / 1,214 Long-term average 85.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 210 hours spilling →	Tributary of Erewash Canal	52	210	down 61%	100%
Great Bolas (CSO) Inlet overflow at sewage works Sewage works Great Bolas Company site name GREAT BOLAS STW (CSO) EA ID / permit SVT00990 · S/04/56001/R Outlet location SJ6469021520 (OS grid reference) · View on Apple Maps WFD catchment Tern - conf Bailey Bk to conf R Meese (GB109054055090) 2024 spills / hours 82 / 319 Long-term average 92.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 209 hours spilling →	Trib of River Tern	50	209	down 39%	99%
Houghton on the Hill STW Storm tank at sewage works Sewage works Houghton On The Hill Company site name HOUGHTON ON THE HILL STW (SSTO) EA ID / permit SVT01181 · T/53/12089/R Outlet location SK6689903446 (OS grid reference) · View on Apple Maps WFD catchment Willow Brook Catchment (trib of Soar) (GB104028046980) 2024 spills / hours 79 / 669 Long-term average 67.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 207 hours spilling →	Bushby Brook	30	207	down 62%	100%
Kelstedge Sewage Treatment Works Inlet overflow at sewage works Sewage works Kelstedge Company site name KELSTEDGE STW (CSO) EA ID / permit SVT01242 · T/41/45651/R Outlet location SK3365963415 (OS grid reference) · View on Apple Maps WFD catchment Amber from Source to Press Brook (GB104028052380) 2024 spills / hours 71 / 237 Long-term average 81.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 207 hours spilling →	River Amber	75	207	up 6%	99%

Sewage treatment works

Storm tanks and inlet overflows at each Severn Trent Water sewage works. The figures are 2025 spills.

← All water companies · Contains Environment Agency data licensed under the Open Government Licence v3.0. How to read the data.