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
Stockton-New Zealand/Napton Rdsps Storm discharge at pumping station Company site name STOCKTON-NEW ZEALAND FM-NAPTON RD (CSO) EA ID / permit SVT02199 · S/12/25046/O Outlet location SP4434063175 (OS grid reference) · View on Apple Maps WFD catchment Stowe - source to conf R Itchen (GB109054044090) 2024 spills / hours 73 / 956 Long-term average 49.4 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 206 hours spilling →	River Stowe	31	206	down 58%	100%
Moira Combined Sewer Overflow Storm discharge at pumping station Company site name MOIRA - THE CRESCENT (SSO) EA ID / permit SVT01578 · T/23/00115/O Outlet location SK3088015337 (OS grid reference) · View on Apple Maps WFD catchment Hooborough Brook from Source to River Mease (GB104028046580) 2024 spills / hours 40 / 322 Long-term average 32.6 spills a year (monitored since 2021) 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 206 hours spilling →	Trib of Hooborough Brook	40	206	no change	100%
Claymills Sewage Treatment Works Storm tank at sewage works Sewage works Claymills Company site name CLAYMILLS STW (SSTO) EA ID / permit SVT00573 · T/24/36133/R Outlet location SK2650625701 (OS grid reference) · View on Apple Maps WFD catchment Trent - R Tame to R Dove (GB104028047180) 2024 spills / hours 66 / 889 Long-term average 33.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 205 hours spilling →	River Trent (and Trib of)	24	205	down 64%	98%
Donisthorpe Sewage Treatment Works Storm tank at sewage works Sewage works Donisthorpe Company site name DONISTHORPE STW (SSTO) EA ID / permit SVT00780 · T/23/08420/R Outlet location SK3054914385 (OS grid reference) · View on Apple Maps WFD catchment Hooborough Brook from Source to River Mease (GB104028046580) 2024 spills / hours 31 / 133 Long-term average 39.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement UWWTR improvement completed Volume & pollution Estimate from 205 hours spilling →	Hooborough Brook	21	205	down 32%	100%
Ambergate STW Storm tank at sewage works Sewage works Ambergate Company site name AMBERGATE STW (SSTO) EA ID / permit SVT00074 · T/41/45524/R Outlet location SK3547351622 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 27 / 179 Long-term average 29.4 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 203 hours spilling →	River Amber	21	203	down 22%	100%
Arnesby Sewage Treatment Works Storm tank at sewage works Sewage works Arnesby Company site name ARNESBY STW (SSTO) EA ID / permit SVT00110 · T/51/45648/R Outlet location SP6088891599 (OS grid reference) · View on Apple Maps WFD catchment Countesthorpe Brook from Source to Sence (GB104028042560) 2024 spills / hours 64 / 448 Long-term average 104.2 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 202 hours spilling →	Countesthorpe Brook	35	202	down 45%	97%
Defford Village STW Storm tank at sewage works Sewage works Defford Village Company site name DEFFORD VILLAGE STW (SSTO) EA ID / permit SVT00746 · S/19/25866/R Outlet location SO9198942774 (OS grid reference) · View on Apple Maps WFD catchment Bow Bk - Shell to conf R Avon (GB109054043712) 2024 spills / hours 34 / 252 Long-term average 36.0 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 202 hours spilling →	Bow Brook	26	202	down 24%	100%
Main Street Laneham Pumping Station Storm discharge at pumping station Company site name LANEHAM - MAIN STREET (SSO) EA ID / permit SVT01462 · T/69/46318/O Outlet location SK8079076330 (OS grid reference) · View on Apple Maps WFD catchment North Beck Catchment (trib of Trent) (GB104028058311) 2024 spills / hours 45 / 466 Long-term average 38.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 202 hours spilling →	Unnamed Trib of Laneham Beck	30	202	down 33%	100%
Carol Green - Hodgetts Lane SPS Storm discharge at pumping station Company site name CAROL GREEN - HODGETTS LANE (SSO) EA ID / permit SVT00484 · T/11/35957/O Outlet location SP2577877565 (OS grid reference) · View on Apple Maps WFD catchment Blythe from Temple Balsall Brook to Patrick Bridge (GB104028042571) 2024 spills / hours 34 / 409 Long-term average 15.6 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 201 hours spilling →	Tributary of River Blythe	15	201	down 56%	99%
Melbourne STW (CSO) Inlet overflow at sewage works Sewage works Melbourne EA ID / permit SVT02726 · EPR/MB3840KR Outlet location SK3913725407 (OS grid reference) · View on Apple Maps WFD catchment Carr-New Brook from Source to Ramsley Brook (GB104028047330) 2024 spills / hours – / – Monitor below 90% Capital / maintenance works affect EDM operation · Resolved - Apr Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 201 hours spilling →	Carr Brook	18	201		87%
Nottingham Road Hucknall CSO Overflow on sewer network Company site name HUCKNALL - SHELTON AVENUE (CSO) EA ID / permit SVT01690 · T/63/45888/O Outlet location SK5458947093 (OS grid reference) · View on Apple Maps WFD catchment Leen from Source to Day Brook (GB104028052880) 2024 spills / hours 67 / 477 Long-term average 74.2 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 201 hours spilling →	Tributary of River Leen	64	201	down 4%	100%
Braithwell Sewage Treatment Works Storm tank at sewage works (with treatment) Sewage works Braithwell Company site name BRAITHWELL STW (SSTO) EA ID / permit SVT00326 · T/83/45636/R Outlet location SK5411794602 (OS grid reference) · View on Apple Maps WFD catchment Ruddle (Paper Mill Dyke) from Source to Torne (GB104028058380) Treatment Reed bed 2024 spills / hours 63 / 367 Long-term average 54.8 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 200 hours spilling →	Ruddle Dyke Glen	41	200	down 35%	100%
Coalport Sewage Treatment Works Inlet overflow at sewage works Sewage works Coalport Company site name COALPORT STW (CSO) EA ID / permit SVT00591 · 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 53 / 334 Long-term average 32.8 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 No improvement action in reporting period Volume & pollution Estimate from 200 hours spilling →	River Severn	45	200	down 15%	100%
Little Witley STW Storm tank at sewage works Sewage works Little Witley Company site name LITTLE WITLEY STW (SSTO) EA ID / permit SVT02670 · Unpermitted Outlet location SO7893063270 (OS grid reference) · View on Apple Maps WFD catchment Grimley Bk - source to conf R Severn (GB109054044160) 2024 spills / hours 31 / 184 Long-term average 47.0 spills a year (monitored since 2023) 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 199 hours spilling →	Trib of Grimley Brook	51	199	up 65%	100%
Fritchley STW Inlet overflow at sewage works Sewage works Fritchley Company site name FRITCHLEY STW – 6DWF EA ID / permit SVT00931 · 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 73 / 267 Long-term average 68.8 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 Operational improvement completed Volume & pollution Estimate from 199 hours spilling →	Tribuatry of River Amber	52	199	down 29%	98%
Checkley Sewage Treatment Works Storm tank at sewage works Sewage works Checkley Company site name CHECKLEY STW (SSTO) EA ID / permit SVT00521 · T/32/36105/R Outlet location SK0319937501 (OS grid reference) · View on Apple Maps WFD catchment Tean from Cheadle Catchment to River Dove (GB104028052450) 2024 spills / hours 43 / 163 Long-term average 26.2 spills a year (monitored since 2021) High-spill reason (company) Performance - Asset configuration (e.g. PS/rising main/storm tanks) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 199 hours spilling →	River Tean	35	199	down 19%	99%
Bulwell - Hucknall Ln/Lawton Dr CSO Overflow on sewer network Company site name BULWELL - HUCKNALL LA/LAWTON DRIVE (CSO) EA ID / permit SVT00406 · T/63/40226/O Outlet location SK5447546341 (OS grid reference) · View on Apple Maps WFD catchment Leen from Source to Day Brook (GB104028052880) 2024 spills / hours 33 / 197 Long-term average 29.4 spills a year (monitored since 2021) High-spill reason (company) Data collection - EDM non-representative location Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 199 hours spilling →	River Leen	35	199	up 6%	100%
Kenilworth - Dalehouse Lane TPS Storm discharge at pumping station Company site name KENILWORTH - DALEHOUSE LANE (SSO) EA ID / permit SVT01246 · S/11/07065/O Outlet location SP3056573045 (OS grid reference) · View on Apple Maps WFD catchment Finham Bk - source to conf Canley Bk (GB109054044470) 2024 spills / hours 53 / 521 Long-term average 37.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement completed, Operational improvement completed Volume & pollution Estimate from 198 hours spilling →	Finham Brook	26	198	down 51%	100%
South Wingfield - Holm Lane SPS Storm discharge at pumping station Company site name SOUTH WINGFIELD - BIRCHES LANE 141 (CSO) EA ID / permit SVT02115 · EPRYB3092EA Outlet location SK3825955722 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 9 / 64 Long-term average 14.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 198 hours spilling →	River Amber	31	198	up 244%	100%
Alvaston CSO Overflow on sewer network Company site name ALVASTON - RAYNESWAY PARK DRIVE (CSO) EA ID / permit SVT00065 · T/48/45201/O Outlet location SK3875234132 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 64 / 437 Long-term average 54.7 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 197 hours spilling →	River Derwent	47	197	down 27%	100%
Wanlip Sewage Treatment Works Storm tank at sewage works Sewage works Wanlip Company site name SSTO OVERFLOW-3PG-RIVER SOAR2 EA ID / permit SVT02443 · T/53/46354/R Outlet location SK5987011820 (OS grid reference) · View on Apple Maps WFD catchment Soar from Sence to Rothley Brook (GB104028047030) 2024 spills / hours 57 / 729 Long-term average 39.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 197 hours spilling →	River Soar	21	197	down 63%	100%
Pershore Mill - Pershore Road CSO Overflow on sewer network Company site name PEBBLE MILL - PERSHORE ROAD (CSO) EA ID / permit SVT01791 · DT/9846 Outlet location SP0634583583 (OS grid reference) · View on Apple Maps WFD catchment Rea from Bourn Brook to River Tame (GB104028042550) 2024 spills / hours 90 / 384 Long-term average 72.8 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Comms failure / issue · Resolved - Aug Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 197 hours spilling →	River Rea	69	197	down 23%	89%
Droitwich Ladywood WwTW Storm tank at sewage works Sewage works Droitwich Ladywood Company site name DROITWICH - LADYWOOD STW (SSTO) EA ID / permit SVT00794 · S/07/55591/R Outlet location SO8627761670 (OS grid reference) · View on Apple Maps WFD catchment Salwarpe - conf Elmbridge Bk to conf R Severn (GB109054044170) 2024 spills / hours 78 / 735 Long-term average 49.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 195 hours spilling →	River Salwarpe	23	195	down 71%	100%
Shenton Sewage Pumping Station Storm discharge at pumping station Company site name SIBSON (CSO) EA ID / permit SVT02003 · T/20/02399/O Outlet location SK3560000400 (OS grid reference) · View on Apple Maps WFD catchment Stoke Golding Brook from Source to R Sence (GB104028046640) 2024 spills / hours 60 / 631 Long-term average 40.4 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 ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 195 hours spilling →	Trib of River Sence (Anker)	32	195	down 47%	100%
Naseby Sewage Treatment Works Storm tank at sewage works Sewage works Naseby Company site name NASEBY WRW (STW) OVERFLOW EA ID / permit SVT01604 · S/10/25789/R Outlet location SP6811078030 (OS grid reference) · View on Apple Maps WFD catchment Avon (Warks) - source to Claycoton-Yelvertoft Bk (GB109054043930) 2024 spills / hours 140 / 1,010 Long-term average 71.4 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 195 hours spilling →	River Avon	54	195	down 61%	100%
Kineton Sewage Treatment Works Inlet overflow at sewage works (with treatment) Sewage works Kineton Company site name KINETON (STW) EA ID / permit SVT01266 · S/13/25745/R Outlet location SP3257050702 (OS grid reference) · View on Apple Maps WFD catchment Dene - source to Butlers Marston (GB109054039501) Treatment Reed bed 2024 spills / hours 89 / 1,037 Long-term average 48.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 194 hours spilling →	River Dene	19	194	down 79%	100%
Stratford Milcote STW Storm tank at sewage works Sewage works Stratford Milcote Company site name STRATFORD - MILCOTE STW (SSTO) EA ID / permit SVT02235 · S/13/25718/R Outlet location SP1799053040 (OS grid reference) · View on Apple Maps WFD catchment Avon- Tramway Br Stratford to Workman Br Evesham (GB109054044401) 2024 spills / hours 36 / 489 Long-term average 32.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 193 hours spilling →	River Avon	26	193	down 28%	100%
Shrewsbury Monkmoor STW Storm tank at sewage works Sewage works Shrewsbury Monkmoor Company site name MONKMOOR STW (SSTO) EA ID / permit SVT02039 · S/02/56373/R Outlet location SJ5204513263 (OS grid reference) · View on Apple Maps WFD catchment Severn - Sundorne Bk to conf M Wenlock-Farley Bk (GB109054049141) 2024 spills / hours 94 / 1,124 Long-term average 115.7 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 193 hours spilling →	River Severn	34	193	down 64%	100%
Dinnington Sewage Treatment Works Storm tank at sewage works Sewage works Dinnington Company site name DINNINGTON STW SSTO 1 (SSTO) EA ID / permit SVT00771 · T/75/46295/R Outlet location SK5157685954 (OS grid reference) · View on Apple Maps WFD catchment Anston Brook from Source to Ryton (GB104028058210) 2024 spills / hours 45 / 420 Long-term average 45.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 191 hours spilling →	Cramfit Brook	26	191	down 42%	100%
Minworth Sewage Treatment Works Storm tank at sewage works Sewage works Minworth Company site name MINWORTH STW (SSTO) EA ID / permit SVT01575 · T/10/36212/R Outlet location SP1647991529 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 54 / 503 Long-term average 37.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 190 hours spilling →	River Tame	24	190	down 56%	100%
Wyre Road Sewage Pumping Station Storm discharge at pumping station Company site name PERSHORE - WYRE ROAD PS (CSO) EA ID / permit SVT02645 · S/17/26005/O Outlet location SO9561046670 (OS grid reference) · View on Apple Maps WFD catchment Avon conf Workman Br, Evesham to conf R Severn (GB109054044403) 2024 spills / hours 86 / 553 Long-term average 57.0 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 187 hours spilling →	River Avon	21	187	down 76%	100%
Oadby STW Storm tank at sewage works Sewage works Oadby Company site name OADBY STW (SSTO) EA ID / permit SVT01697 · T/52/45772/R Outlet location SP6148499983 (OS grid reference) · View on Apple Maps WFD catchment Wash Brook Catchment (trib of Soar) (GB104028046910) 2024 spills / hours 44 / 395 Long-term average 35.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 186 hours spilling →	Wash Brook	30	186	down 32%	100%
Loughborough Town West CSO Overflow on sewer network Company site name LOUGHBOROUGH - JUBILEE DRIVE (CSO) EA ID / permit SVT01421 · T/57/02034/O Outlet location SK5318620740 (OS grid reference) · View on Apple Maps WFD catchment Wood Brook Catchment (trib of Soar) (GB104028047080) 2024 spills / hours 54 / 349 Long-term average 52.1 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 186 hours spilling →	Wood Brook	46	186	down 15%	100%
Quedgeley Pumping Station Storm discharge at pumping station Company site name QUEDGELEY - (CRITICAL) (CSO) EA ID / permit SVT01840 · S/20/26115/O Outlet location SO7959014010 (OS grid reference) · View on Apple Maps WFD catchment Severn River and Trib Estuary (GB530905415403) 2024 spills / hours 40 / 297 Long-term average 25.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 186 hours spilling →	Dimore Brook	18	186	down 55%	99%
Toll Road Combined Sewer Overflow Overflow on sewer network Company site name RIPLEY - BUTTERLEY LANE (CSO) EA ID / permit SVT02332 · T/41/45659/O Outlet location SK3952351780 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 63 / 223 Long-term average 48.4 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 184 hours spilling →	Hartshay Brook	55	184	down 13%	100%
Pumping Station Storm discharge at pumping station Company site name COTON IN THE ELMS - CHURCH ROAD (SSO) EA ID / permit SVT00645 · T/23/02473/O Outlet location SK2453015100 (OS grid reference) · View on Apple Maps WFD catchment Mease from Hooborough Brook to Trent (GB104028046560) 2024 spills / hours 51 / 535 Long-term average 37.2 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 183 hours spilling →	Pessall Brook	27	183	down 47%	100%
Ambergate PS - Storm/Emergency O/F Storm discharge at pumping station Company site name AMBERGATE - DERBY ROAD (SSO) EA ID / permit SVT00072 · T/42/09111/O Outlet location SK3483050800 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 41 / 348 Long-term average 29.8 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 183 hours spilling →	River Derwent	30	183	down 27%	100%
Evesham/Hampton Parks STW Storm tank at sewage works Sewage works Evesham Hampton Parks Company site name EVESHAM STW (SSTO) EA ID / permit SVT00882 · S/17/26427/R Outlet location SP0314044620 (OS grid reference) · View on Apple Maps WFD catchment Avon conf Workman Br, Evesham to conf R Severn (GB109054044403) 2024 spills / hours 54 / 607 Long-term average 41.2 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 183 hours spilling →	River Avon	20	183	down 63%	100%
Hartington Sewage Treatment Works Storm tank at sewage works Sewage works Hartington Company site name HARTINGTON STW (SSTO) EA ID / permit SVT01071 · T/25/36210/R Outlet location SK1220560363 (OS grid reference) · View on Apple Maps WFD catchment Dove from Source to River Manifold (GB104028057780) 2024 spills / hours 103 / 1,894 Long-term average 63.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 182 hours spilling →	Tributary of River Dove	18	182	down 83%	100%
St. Marys Road Pumping Station Storm discharge at pumping station Company site name NUNEATON - ST MARYS ROAD O/F 1 (CSO) EA ID / permit SVT02152 · T/19/08001/O Outlet location SP3623092360 (OS grid reference) · View on Apple Maps WFD catchment Anker from Wem Brook to River Sence (GB104028046430) 2024 spills / hours 41 / 455 Long-term average 22.8 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 182 hours spilling →	River Anker	19	182	down 54%	100%
Kingsley Holt Pumping Station Storm discharge at pumping station Company site name KINGSLEY HOLT - SHAWE PARK ROAD (CSO) EA ID / permit SVT01281 · T/32/20187/O Outlet location SK0157045920 (OS grid reference) · View on Apple Maps WFD catchment Mobberley Bk (GB104028053100) 2024 spills / hours 45 / 229 Long-term average 42.6 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 182 hours spilling →	Mobberley Brook	30	182	down 33%	100%
Chipping Campden STW Storm tank at sewage works Sewage works Chipping Campden Company site name CHIPPING CAMDEN STW (SSTO) EA ID / permit SVT00539 · S/14/25988/R Outlet location SP1634739222 (OS grid reference) · View on Apple Maps WFD catchment Knee Bk - source to conf Blockley Bk (GB109054039870) 2024 spills / hours 87 / 524 Long-term average 55.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 179 hours spilling →	Cam Brook	25	179	down 71%	100%
Upton on Severn STW Storm tank at sewage works Sewage works Upton On Severn Company site name UPTON-ON-SEVERN STW (SSTO) EA ID / permit SVT02373 · S/08/25699/R Outlet location SO8505040810 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf R Teme to conf R Avon (GB109054039760) 2024 spills / hours 63 / 1,120 Long-term average 45.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 179 hours spilling →	River Severn	12	179	down 81%	100%
Church Stretton STW (CSO) Inlet overflow at sewage works Sewage works Church Stretton Company site name CHURCH STRETTON (STW) EA ID / permit SVT02699 · S/09/55956/R Outlet location SO4406090820 (OS grid reference) · View on Apple Maps WFD catchment Quinny Bk - source to conf R Onny (GB109054044350) 2024 spills / hours 39 / 105 Long-term average 35.0 spills a year (monitored since 2025) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 178 hours spilling →	Trib of Quinny Brook	35	178	down 10%	100%
Dale Road North (Rlwy) CSO Overflow on sewer network Company site name NORTHWOOD - DALE RD NORTH(RAILWAY) (CSO) EA ID / permit SVT00721 · EPRLB3497RC Outlet location SK2614764520 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 48 / 171 Long-term average 58.3 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 178 hours spilling →	River Derwent	44	178	down 8%	100%
Radcliffe-on-Trent STW Storm tank at sewage works Sewage works Radcliffe On Trent Company site name RADCLIFFE-ON-TRENT STW (SSTO) EA ID / permit SVT01851 · EPRPB3099DJ Outlet location SK6330539609 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 48 / 536 Long-term average 45.5 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 178 hours spilling →	River Trent	19	178	down 60%	100%
Honeybourne Sewage Treatment Works Storm tank at sewage works Sewage works Honeybourne Company site name HONEYBOURNE STW (SSTO) EA ID / permit SVT01172 · S/16/26289/R Outlet location SP1082143173 (OS grid reference) · View on Apple Maps WFD catchment Bretforton Bk - source to conf Broadway-Badsey Bk (GB109054039341) 2024 spills / hours 57 / 592 Long-term average 33.5 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 178 hours spilling →	Tributary of Broadway Brook	15	178	down 74%	98%
Tants Meadow Overflow on sewer network Company site name LOWER KILBURN - DERBY ROAD (CSO) EA ID / permit SVT01430 · T/45/21314/O Outlet location SK3736044970 (OS grid reference) · View on Apple Maps WFD catchment Bottle Brook Catchment (trib of Derwent) (GB104028052300) 2024 spills / hours 25 / 133 Long-term average 24.4 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 177 hours spilling →	Bottle Brook	30	177	up 20%	100%
Welford-on-Avon - Boat Lane (SSO) Storm discharge at pumping station EA ID / permit SVT02483 · TSC4064 Outlet location SP1440152151 (OS grid reference) · View on Apple Maps WFD catchment Avon- Tramway Br Stratford to Workman Br Evesham (GB109054044401) 2024 spills / hours 61 / 613 Long-term average 30.0 spills a year (monitored since 2025) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 175 hours spilling →	River Avon	30	175	down 51%	100%
Butterwick Road SPS Storm discharge at pumping station Company site name MESSINGHAM - BUTTERWICK RD (CSO) EA ID / permit SVT00443 · T/81/46220/O Outlet location SE8817604255 (OS grid reference) · View on Apple Maps WFD catchment Bottesford Beck Catchment (trib of Trent) (GB104028064290) 2024 spills / hours 30 / 182 Long-term average 27.4 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 No improvement action in reporting period Volume & pollution Estimate from 174 hours spilling →	Messingham Catchwater Drain	39	174	up 30%	100%

Sewage treatment works

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

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