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
Coalville South Pumping Station Storm discharge at pumping station Company site name KELHAM BRIDGE SOQ-937-01-30 (CSO) EA ID / permit SVT00597 · T/20/35540/O Outlet location SK4060012000 (OS grid reference) · View on Apple Maps WFD catchment Sence from Source to Ibstock Brook (GB104028046750) 2024 spills / hours 78 / 1,029 Long-term average 56.6 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 Operational improvement completed Volume & pollution Estimate from 475 hours spilling →	River Sence	53	475	down 32%	100%
Worthington STW Storm tank at sewage works Sewage works Worthington Company site name WORTHINGTON (STW) EA ID / permit SVT02641 · T/36/45905/R Outlet location SK4090121254 (OS grid reference) · View on Apple Maps WFD catchment Ramsley Brook from Source to Carr-New Brook (GB104028047340) 2024 spills / hours 96 / 1,510 Long-term average 45.0 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 464 hours spilling →	Boden Brook	45	464	down 53%	100%
Slade Hooton Sewage Treatment Works Storm tank at sewage works Sewage works Slade Hooton Company site name SLADE HOOTON STW (SSTO) EA ID / permit SVT02061 · T/76/45411/R Outlet location SK5242888747 (OS grid reference) · View on Apple Maps WFD catchment Oldcotes Dyke Catchment (trib of Ryton) (GB104028058230) 2024 spills / hours 57 / 610 Long-term average 53.3 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 463 hours spilling →	Hooton Dike	50	463	down 12%	100%
Fritchley STW Storm tank at sewage works Sewage works Fritchley Company site name FRITCHLEY STW – SSTO EA ID / permit SVT00932 · T/41/45541/R Outlet location SK3612452599 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 42 / 252 Long-term average 63.4 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 Operational improvement completed Volume & pollution Estimate from 461 hours spilling →	Tribuatry of River Amber	48	461	up 14%	98%
Derby Sewage Treatment Works Storm tank at sewage works Sewage works Derby Company site name DERBY STW (SSTO) EA ID / permit SVT00760 · T/48/45678/R Outlet location SK3903434769 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 72 / 827 Long-term average 55.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 459 hours spilling →	River Derwent	49	459	down 32%	100%
Blakeney Sewage Treatment Works Inlet overflow at sewage works Sewage works Blakeney Company site name BLAKENEY STW STAGE 2 SPS (CSO) EA ID / permit SVT00289 · S/20/26262/R Outlet location SO6911006040 (OS grid reference) · View on Apple Maps WFD catchment Severn River and Trib Estuary (GB530905415403) 2024 spills / hours 130 / 961 Long-term average 67.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 452 hours spilling →	River Severn	77	452	down 41%	100%
Hathersage STW Storm tank at sewage works Sewage works Hathersage Company site name HATHERSAGE STW (SSTO) EA ID / permit SVT01086 · T/38/46316/R Outlet location SK2360580620 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Westend to Wye (GB104028057880) 2024 spills / hours 72 / 428 Long-term average 85.3 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 451 hours spilling →	River Derwent	58	451	down 19%	100%
Barton Under Needwood STW Storm tank at sewage works Sewage works Barton Under Needwood Company site name BARTON STW (SSTO) EA ID / permit SVT00191 · T/24/35673/R Outlet location SK1989718328 (OS grid reference) · View on Apple Maps WFD catchment Trent - R Tame to R Dove (GB104028047180) 2024 spills / hours 155 / 3,101 Long-term average 109.2 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 449 hours spilling →	Tributary of River Trent	33	449	down 79%	100%
Lilbourne Sewage Treatment Works Storm tank at sewage works (with treatment) Sewage works Lilbourne Company site name LILBOURNE STW (CSO) EA ID / permit SVT01364 · S/10/26161/R Outlet location SP5670877379 (OS grid reference) · View on Apple Maps WFD catchment Claycoton-Yelvertoft Bk - source to conf R Avon (GB109054043910) Treatment Reed bed 2024 spills / hours 74 / 596 Long-term average 65.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 449 hours spilling →	Clay Coton Brook	50	449	down 32%	99%
Packington WwTW Storm tank at sewage works Sewage works Packington Company site name PACKINGTON STW (SSTO) EA ID / permit SVT01747 · T/23/36076/R Outlet location SK3598214071 (OS grid reference) · View on Apple Maps WFD catchment Gilwiskaw Brook from Source to River Mease (GB104028046590) 2024 spills / hours 69 / 901 Long-term average 52.0 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 Operational improvement completed Volume & pollution Estimate from 447 hours spilling →	Gilwiskaw Brook	40	447	down 42%	100%
Barrow & Quorn STW Storm tank at sewage works Sewage works Barrow And Quorn Company site name BARROW & QUORN (STW) EA ID / permit SVT00186 · T/57/45505/R Outlet location SK5597618163 (OS grid reference) · View on Apple Maps WFD catchment Soar from Rothley Brook to Long Whatton Brook (GB104028047211) 2024 spills / hours 84 / 1,344 Long-term average 61.0 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 445 hours spilling →	Tributary of River Soar	35	445	down 58%	99%
Scarcliffe WwTW Storm tank at sewage works Sewage works Scarcliffe Company site name SCARCLIFFE STW (SSTO) EA ID / permit SVT01950 · T/73/46169/R Outlet location SK5011168438 (OS grid reference) · View on Apple Maps WFD catchment Poulter from Source to Millwood Brook (GB104028058130) 2024 spills / hours 68 / 724 Long-term average 67.6 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 443 hours spilling →	River Poulter	58	443	down 15%	100%
Churchover Sewage Treatment Works Inlet overflow at sewage works Sewage works Churchover Company site name CHURCHOVER STW (CSO) EA ID / permit SVT00563 · S/10/25817/R Outlet location SP5053680419 (OS grid reference) · View on Apple Maps WFD catchment Swift source to conf Avon (GB109054043940) 2024 spills / hours 27 / 65 Long-term average 12.0 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 442 hours spilling →	River Swift	22	442	down 19%	100%
Hayden Sewage Treatment Works Storm tank at sewage works Sewage works Hayden Company site name HAYDEN STW (SSTO) EA ID / permit SVT00528 · S/20/26207/R Outlet location SO8993024860 (OS grid reference) · View on Apple Maps WFD catchment Chelt - M5 to conf R Severn (GB109054032810) 2024 spills / hours 76 / 941 Long-term average 49.0 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 438 hours spilling →	River Chelt	37	438	down 51%	100%
Glebe Farm Pumping Station (SPS) Storm discharge at pumping station Company site name FLYFORD FLAVELL - GLEBE FARM SPS (CSO) EA ID / permit SVT00955 · S/17/23088/O Outlet location SO9828054610 (OS grid reference) · View on Apple Maps WFD catchment Piddle Bk - source to conf Whitsun Bk (GB109054043700) 2024 spills / hours 15 / 109 Long-term average 11.6 spills a year (monitored since 2021) High-spill reason (company) Performance - Asset configuration (e.g. PS/rising main/storm tanks) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 436 hours spilling →	Trib of Piddle Brook	38	436	up 153%	100%
Hard Lane Pumping Station Storm discharge at pumping station Company site name KIVETON PARK - HARD LANE (SSO) EA ID / permit SVT01066 · T/75/46091/O Outlet location SK4952082570 (OS grid reference) · View on Apple Maps WFD catchment Broad Bridge Dyke Catchment (trib of Chesterfield Canal) (GB104028058161) 2024 spills / hours 41 / 358 Long-term average 33.4 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 433 hours spilling →	Broad Bridge Dyke	31	433	down 24%	94%
Marehay Sewage Treatment Works Storm tank at sewage works Sewage works Marehay Company site name MAREHAY STW (SSTO) EA ID / permit SVT01494 · T/45/45471/R Outlet location SK3981048200 (OS grid reference) · View on Apple Maps WFD catchment Bottle Brook Catchment (trib of Derwent) (GB104028052300) 2024 spills / hours 81 / 1,094 Long-term average 63.8 spills a year (monitored since 2021) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jul Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement completed Volume & pollution Estimate from 429 hours spilling →	Tributary of Bottle Brook	30	429	down 63%	99%
Lutterworth Sewage Treatment Works Storm tank at sewage works Sewage works Lutterworth Company site name LUTTERWORTH STW (SSTO) EA ID / permit SVT01445 · S/10/26704/R Outlet location SP5302782774 (OS grid reference) · View on Apple Maps WFD catchment Swift source to conf Avon (GB109054043940) 2024 spills / hours 77 / 876 Long-term average 72.0 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 420 hours spilling →	River Swift	57	420	down 26%	100%
Ripley Sewage Treatment Works Storm tank at sewage works Sewage works Ripley Company site name RIPLEY STW (SSTO) EA ID / permit SVT01893 · T/41/45580/R Outlet location SK3850051320 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 19 / 235 Long-term average 53.3 spills a year (monitored since 2022) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Sensor failure / issue · Resolved - Mar Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 412 hours spilling →	Hartshay Brook	47	412	up 147%	79%
Dinnington Sewage Treatment Works Inlet overflow at sewage works Sewage works Dinnington Company site name DINNINGTON STW (SSO) EA ID / permit SVT00772 · T/75/46295/R Outlet location SK5152485980 (OS grid reference) · View on Apple Maps WFD catchment Anston Brook from Source to Ryton (GB104028058210) 2024 spills / hours 172 / 1,381 Long-term average 86.0 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 403 hours spilling →	Cramfit Brook	41	403	down 76%	100%
Bubbenhall Sewage Treatment Works Storm tank at sewage works Sewage works Bubbenhall Company site name BUBBENHALL IPS (CSO) EA ID / permit SVT00399 · S/10/26091/R Outlet location SP3483872566 (OS grid reference) · View on Apple Maps WFD catchment Avon - ClaycotonYelvertoft Bk to conf R Sowe (GB109054043920) 2024 spills / hours 49 / 831 Long-term average 25.5 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 400 hours spilling →	River Avon	28	400	down 43%	100%
Gloucester Netheridge STW Storm tank at sewage works Sewage works Gloucester Netheridge Company site name NETHERIDGE STW (SSTO) EA ID / permit SVT00966 · S/20/26440/R Outlet location SO8079016067 (OS grid reference) · View on Apple Maps WFD catchment SEVERN UPPER (GB530905415403) 2024 spills / hours 107 / 888 Long-term average 85.7 spills a year (monitored since 2020) High-spill reason (company) Performance - SW Infiltration Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 392 hours spilling →	River Severn	57	392	down 47%	100%
Brockhampton STW Storm tank at sewage works Sewage works Brockhampton Company site name BROCKHAMPTON STW (SSTO) EA ID / permit SVT00371 · S/17/26552/R Outlet location SO9455425905 (OS grid reference) · View on Apple Maps WFD catchment Swilgate - source to conf R Avon (GB109054039780) 2024 spills / hours 43 / 346 Long-term average 41.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 390 hours spilling →	Hyde Brook	25	390	down 42%	100%
Sheepy Pumping Station Storm discharge at pumping station Company site name SHEEPY MAGNA (SSO) EA ID / permit SVT01994 · T/20/00779/O Outlet location SK3269001050 (OS grid reference) · View on Apple Maps WFD catchment Sence - Ibstock Bk to R Anker (GB104028046660) 2024 spills / hours 56 / 854 Long-term average 30.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 389 hours spilling →	River Sence (Soar)	24	389	down 57%	97%
Alcester (Oversley Green) STW Storm tank at sewage works (with treatment) Sewage works Alcester Company site name ALCESTER STW - 3PG SRBO - SPILL WEST (SSTO) EA ID / permit SVT00040 · S/15/26435/R Outlet location SP0903456654 (OS grid reference) · View on Apple Maps WFD catchment Arrow - conf R Alne to conf R Avon (GB109054043680) Treatment Reed bed 2024 spills / hours 114 / 1,657 Long-term average 79.6 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 384 hours spilling →	River Arrow	34	384	down 70%	100%
Kidderminster Oldington STW Storm tank at sewage works Sewage works Kidderminster Oldington Company site name KIDDERMINSTER OLDINGTON STW (SSTO) EA ID / permit SVT01254 · S/06/56074/R Outlet location SO8257073810 (OS grid reference) · View on Apple Maps WFD catchment Stour (Worcs) - conf Smestow Bk to conf R Severn (GB109054044710) 2024 spills / hours 45 / 319 Long-term average 59.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Installation set-up/design issue · Resolved - Oct Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 380 hours spilling →	River Stour	45	380	no change	74%
Mayfield Sewage Treatment Works Storm tank at sewage works Sewage works Mayfield Company site name MAYFIELD STW (SSTO) EA ID / permit SVT01520 · T/29/35581/R Outlet location SK1502844374 (OS grid reference) · View on Apple Maps WFD catchment Dove - conf R Manifold to conf R Churnet (GB104028052670) 2024 spills / hours 7 / 3.4 Long-term average 18.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 379 hours spilling →	River Dove	56	379	up 700%	100%
North Warren Road Pumping Station Storm discharge at pumping station Company site name GAINSBOROUGH - NORTH WARREN ROAD (CSO) EA ID / permit SVT01667 · T/69/12378/O Outlet location SK8058090760 (OS grid reference) · View on Apple Maps WFD catchment Trent from Carlton-on-Trent to Laughton Drain (GB104028058480) 2024 spills / hours 65 / 249 Long-term average 55.3 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 379 hours spilling →	River Trent	67	379	up 3%	100%
Himley STW Inlet overflow at sewage works Sewage works Himley Company site name HIMLEY (STW) EA ID / permit SVT01144 · S/06/55931/R Outlet location SO8766291029 (OS grid reference) · View on Apple Maps WFD catchment Bobs-Holbeche Bk - source to conf Smestow Bk (GB109054044830) 2024 spills / hours 25 / 135 Long-term average 63.5 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 378 hours spilling →	Tributary of Smestow Brook	42	378	up 68%	99%
Belper Sewage Treatment Works Storm tank at sewage works Sewage works Belper Company site name BELPER STW (SSTO) EA ID / permit SVT00250 · T/42/46187/R Outlet location SK3457346678 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 58 / 540 Long-term average 44.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 374 hours spilling →	River Derwent	44	374	down 24%	100%
Madresfield - Hall Green TPS Storm discharge at pumping station Company site name MALVERN - HALL GREEN PS (CSO) EA ID / permit SVT01025 · S/08/26255/O Outlet location SO8029746098 (OS grid reference) · View on Apple Maps WFD catchment Madresfield Bk - source to conf R Severn (GB109054039740) 2024 spills / hours 103 / 818 Long-term average 98.0 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 367 hours spilling →	Trib of Whiteacres Brook	58	367	down 44%	100%
Doveridge Pumping Station Storm discharge at pumping station Company site name ASHBOURNE - LIME CLOSE (CSO) EA ID / permit SVT00117 · EPREP3320GQ Outlet location SK1135033760 (OS grid reference) · View on Apple Maps WFD catchment Dove - R Churnet to R Trent (GB104028052420) 2024 spills / hours 43 / 514 Long-term average 16.5 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 367 hours spilling →	River Dove	29	367	down 33%	100%
Sutton-in-Ashfield Inlet SPS No 2 Storm discharge at pumping station Company site name SUTTON IN ASHFIELD - INLET SPS NO.2 (CSO) EA ID / permit SVT02254 · T/70/45397/O Outlet location SK5130059350 (OS grid reference) · View on Apple Maps WFD catchment Maun from Source to Vicar Water (GB104028052960) 2024 spills / hours 24 / 151 Long-term average 14.4 spills a year (monitored since 2019) High-spill reason (company) Performance - Asset configuration (e.g. PS/rising main/storm tanks) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 367 hours spilling →	The Kingsmill Reservoir	56	367	up 133%	100%
Newton Solney-Newton Park (West)SPS Storm discharge at pumping station Company site name NEWTON SOLNEY - NEWTON PARK (WEST) (SSO) EA ID / permit SVT01650 · T/24/12287/O Outlet location SK2779525733 (OS grid reference) · View on Apple Maps WFD catchment Trent - R Tame to R Dove (GB104028047180) 2024 spills / hours 22 / 301 Long-term average 21.2 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 367 hours spilling →	River Trent	27	367	up 23%	100%
Pye Bridge Sewage Treatment Works Storm tank at sewage works Sewage works Pye Bridge Company site name PYE BRIDGE STW (SSTO) EA ID / permit SVT01833 · T/61/45143/R Outlet location SK4406452578 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Source to Nethergreen Brook (GB104028052740) 2024 spills / hours 40 / 444 Long-term average 55.2 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 No improvement action in reporting period Volume & pollution Estimate from 360 hours spilling →	River Erewash	44	360	up 10%	100%
Gilberts End Combined Sewer Overflo Storm discharge at pumping station Company site name GILBERTS END TPS (CSO) EA ID / permit SVT00948 · S/08/25189/O Outlet location SO8319542114 (OS grid reference) · View on Apple Maps WFD catchment Pool Brook - source to conf R Severn (GB109054039720) 2024 spills / hours 16 / 181 Long-term average 24.8 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 358 hours spilling →	Pool Brook	34	358	up 113%	100%
Overseal Wastewater Treatment Works Storm tank at sewage works Sewage works Overseal Company site name OVERSEAL STW (SSTO) EA ID / permit SVT01742 · T/23/35544/R Outlet location SK2904714880 (OS grid reference) · View on Apple Maps WFD catchment Mease from Hooborough Brook to Trent (GB104028046560) 2024 spills / hours 61 / 674 Long-term average 49.2 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 Operational improvement completed Volume & pollution Estimate from 357 hours spilling →	Tributary of River Mease	32	357	down 48%	100%
Chipperfield Road CSO Overflow on sewer network Company site name BUCKLAND END - CHIPPERFIELD RD 136 (CSO) EA ID / permit SVT00538 · T/10/36336/O Outlet location SP1310090114 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 95 / 604 Long-term average 85.7 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 353 hours spilling →	A Trib of River Tame	90	353	down 5%	95%
Cinderford Crumpmeadow STW Storm tank at sewage works Sewage works Cinderford Crumpmeadow Company site name CINDERFORD - CRUMPMEADOW STW (SSTO) EA ID / permit SVT00564 · S/20/25975/R Outlet location SO6446513974 (OS grid reference) · View on Apple Maps WFD catchment Cinderford Bk - source to conf Blackpool Bk (GB109054032710) 2024 spills / hours 73 / 679 Long-term average 48.2 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 completed Volume & pollution Estimate from 352 hours spilling →	Trib of Cinderford Brook	31	352	down 58%	99%
Fleckney Sewage Treatment Works Storm tank at sewage works Sewage works Fleckney Company site name FLECKNEY STW (SSTO) EA ID / permit SVT00909 · T/51/45576/R Outlet location SP6565994523 (OS grid reference) · View on Apple Maps WFD catchment Sence from Burton Brook to Countesthorpe Brook (GB104028046620) 2024 spills / hours 79 / 787 Long-term average 53.6 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 ongoing, Operational improvement completed Volume & pollution Estimate from 348 hours spilling →	Tributary of Burton Brook	43	348	down 46%	100%
Kilburn STW Storm tank at sewage works Sewage works Kilburn Company site name KILBURN STW (SSTO) EA ID / permit SVT01259 · T/45/45334/R Outlet location SK3734544954 (OS grid reference) · View on Apple Maps WFD catchment Bottle Brook Catchment (trib of Derwent) (GB104028052300) 2024 spills / hours 91 / 638 Long-term average 81.8 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 345 hours spilling →	Bottle Brook	45	345	down 51%	100%
Coalport Sewage Treatment Works Storm tank at sewage works Sewage works Coalport Company site name COALPORT STW (SSTO) EA ID / permit SVT00590 · S/02/56070/R Outlet location SJ7098201406 (OS grid reference) · View on Apple Maps WFD catchment Severn conf M Wenlock-Farley Bk to conf R Worfe (GB109054049143) 2024 spills / hours 83 / 892 Long-term average 66.2 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 342 hours spilling →	River Severn	33	342	down 60%	99%
Teddington - A435 SPS Storm discharge at pumping station Company site name TEDDINGTON - A435 (CSO) EA ID / permit SVT02275 · S/17/25464/O Outlet location SO9576632998 (OS grid reference) · View on Apple Maps WFD catchment Tirle Brook - source to the conf River Swilgate (GB109054039810) 2024 spills / hours 145 / 1,803 Long-term average 99.2 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 completed Volume & pollution Estimate from 342 hours spilling →	Tirle Brook	53	342	down 63%	100%
Nether Broughton STW Storm tank at sewage works Sewage works Nether Broughton Company site name NETHER BROUGHTON STW (SSTO) EA ID / permit SVT01609 · T/66/45637/R Outlet location SK6889025287 (OS grid reference) · View on Apple Maps WFD catchment Dalby Brook Catchment (trib of Smite) (GB104028047230) 2024 spills / hours 103 / 1,239 Long-term average 86.2 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 completed Volume & pollution Estimate from 341 hours spilling →	Dalby Brook	41	341	down 60%	100%
Coventry-Finham WwTW Storm tank at sewage works Sewage works Coventry Finham Company site name FINHAM - SSTO OVERFLOW-3PG-RIVER SOWE EA ID / permit SVT00660 · S/11/26637/R Outlet location SP3380173877 (OS grid reference) · View on Apple Maps WFD catchment Sowe - conf Withy Bk to conf R Avon (GB109054044540) 2024 spills / hours 61 / 760 Long-term average 35.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement completed, Operational improvement completed Volume & pollution Estimate from 339 hours spilling →	River Sowe	25	339	down 59%	100%
Farndon Sewage Treatment Works Storm tank at sewage works Sewage works Farndon Company site name FARNDON STW (SSTO) EA ID / permit SVT00886 · T/67/45555/R Outlet location SK7814051630 (OS grid reference) · View on Apple Maps WFD catchment Devon from Cotham to Trent (GB104028052632) 2024 spills / hours 117 / 1,403 Long-term average 55.4 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 338 hours spilling →	River Devon	28	338	down 76%	100%
The Railway Line CSO Overflow on sewer network Company site name BAMFORD - ROSE GARDEN (CSO) EA ID / permit SVT02301 · T/38/21466/O Outlet location SK2057482591 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Westend to Wye (GB104028057880) 2024 spills / hours 64 / 114 Long-term average 80.7 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 completed Volume & pollution Estimate from 338 hours spilling →	River Derwent	67	338	up 5%	100%
Bingham Road CSO Overflow on sewer network Company site name RADCLIFFE ON TRENT - BINGHAM RD (CSO) EA ID / permit SVT00267 · T/64/40360/O Outlet location SK6433139492 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 103 / 524 Long-term average 100.4 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 completed Volume & pollution Estimate from 337 hours spilling →	Trib of River Trent	95	337	down 8%	100%
Birches Head Road CSO Overflow on sewer network Company site name ABBEY HULTON - BIRCHES HEAD ROAD (SSO) EA ID / permit SVT00270 · T/01/35770/O Outlet location SJ9028149128 (OS grid reference) · View on Apple Maps WFD catchment Trent - Ford Green Bk to Fowlea Bk (GB104028053301) 2024 spills / hours 51 / 515 Long-term average 43.3 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 337 hours spilling →	Tributary of River Trent	39	337	down 24%	100%
East Leake Sewage Treatment Works Storm tank at sewage works Sewage works East Leake Company site name EAST LEAKE STW (SSTO) EA ID / permit SVT00825 · T/58/45986/R Outlet location SK5383226369 (OS grid reference) · View on Apple Maps WFD catchment Kingston Brook Catchment (Trib of Soar) (GB104028046600) 2024 spills / hours 112 / 1,990 Long-term average 89.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement UWWTR improvement completed Volume & pollution Estimate from 336 hours spilling →	Tributary of Kingston Brook	22	336	down 80%	100%

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.