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
Tickhill Sewage Treatment Works Inlet overflow at sewage works Sewage works Tickhill Company site name TICKHILL STW (CSO) EA ID / permit SVT02319 · T/83/45915/R Outlet location SK6019593636 (OS grid reference) · View on Apple Maps WFD catchment Torne from Ruddle to St Catherine's Well Stream (GB104028058400) 2024 spills / hours 15 / 17 Long-term average 23.5 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Slutwell Stream	14	22	down 7%	100%
Hossil Lane Pumping Station Storm discharge at pumping station Company site name HOLY CROSS - HOSSIL LANE (SSO) EA ID / permit SVT01180 · S/06/07665/O Outlet location SO9140078200 (OS grid reference) · View on Apple Maps WFD catchment Blakedown Bk - source to conf R Stour (GB109054044570) 2024 spills / hours 12 / 14 Long-term average 7.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Windmill Pool Brook	9	22	down 25%	96%
Birmingham - Bordesley Green Road (CSO) Overflow on sewer network EA ID / permit SVT00010 · EPRJB3599DS Outlet location SP1133685323 (OS grid reference) · View on Apple Maps WFD catchment Cole from Springfield to Hatchford-Kingshurst Brook (GB104028042502) 2024 spills / hours 55 / 48 Long-term average 32.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	River Cole	27	22	down 51%	100%
Bell Lane Storm Overflow Overflow on sewer network Company site name MARSTON GRN - BELL LA(ADJ RAILWAY) (CSO) EA ID / permit SVT00238 · T/12/30280/O Outlet location SP1642085660 (OS grid reference) · View on Apple Maps WFD catchment Hatchford-Kingshurst Brook from Source to R Cole (GB104028042490) 2024 spills / hours 9 / 34 Long-term average 6.0 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Hatchford Brook	4	22	down 56%	99%
Ditherington Road CSO Overflow on sewer network Company site name SHREWSBURY - DITHERINGTON RD (CSO) EA ID / permit SVT00773 · S/02/21038/O Outlet location SJ5026614138 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf Bele Bk to conf Sundorne Bk (GB109054049142) 2024 spills / hours 53 / 68 Long-term average 29.9 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Tributary of River Severn	26	22	down 51%	100%
Hugglescote Station Road CSO Overflow on sewer network Company site name HUGGLESCOTE - STATION RD(CEMETERY) (CSO) EA ID / permit SVT01190 · T/20/22541/O Outlet location SK4521212374 (OS grid reference) · View on Apple Maps WFD catchment Sence from Source to Ibstock Brook (GB104028046750) 2024 spills / hours 7 / 12 Long-term average 16.6 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 22 hours spilling →	River Sence	3	22	down 57%	93%
Rushmoor STW Inlet overflow at sewage works Sewage works Rushmoor Company site name RUSHMOOR STW (CSO) EA ID / permit SVT01931 · S/04/55141/R Outlet location SJ6129613532 (OS grid reference) · View on Apple Maps WFD catchment Tern - conf R Meese to conf R Roden (GB109054050170) 2024 spills / hours 21 / 77 Long-term average 18.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	River Tern	9	22	down 57%	100%
Castle Donington - Station Rd CSO Overflow on sewer network Company site name CASTLE DONINGTON - STATION ROAD (CSO) EA ID / permit SVT00488 · T/36/22695/O Outlet location SK4485628388 (OS grid reference) · View on Apple Maps WFD catchment Trent from Dove to Derwent (GB104028047420) 2024 spills / hours 24 / 31 Long-term average 22.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Castle Donington Brook	19	21	down 21%	100%
Crossley PS - Storm/Emergency of Storm discharge at pumping station Company site name SANDIACRE - MARK ST (SSO) EA ID / permit SVT00691 · T/61/20321/O Outlet location SK4817036840 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 21 / 48 Long-term average 15.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Erewash	10	21	down 52%	100%
Tansley Old Coach Road CSO Overflow on sewer network Company site name TANSLEY - OLD COACH ROAD (CSO) EA ID / permit SVT02273 · T/40/21451/O Outlet location SK3187359883 (OS grid reference) · View on Apple Maps WFD catchment Bentley Brook Catchment (trib of Derwent) (GB104028052810) 2024 spills / hours 67 / 152 Long-term average 35.6 spills a year (monitored since 2017) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 21 hours spilling →	Trib of Bentley Brook	23	21	down 66%	100%
New Park Farm CSO Overflow on sewer network Company site name SHREWSBURY - MILLERS GREEN (CSO) EA ID / permit SVT01619 · S/02/21082/O Outlet location SJ5028314125 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf Bele Bk to conf Sundorne Bk (GB109054049142) 2024 spills / hours 31 / 32 Long-term average 26.9 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Tributary of River Severn	26	21	down 16%	100%
Sharp Stones Lane CSO Overflow on sewer network Company site name BAYSTON HILL - SHARPSTONES LANE (CSO) EA ID / permit SVT01986 · S/02/21409/O Outlet location SJ4899908997 (OS grid reference) · View on Apple Maps WFD catchment Rea Bk - conf Pontesford Bk to conf R Severn (GB109054049630) 2024 spills / hours 32 / 50 Long-term average 24.1 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 21 hours spilling →	Tributary of Rea Brook	17	21	down 47%	100%
South of Borrowash Bypass CSO Overflow on sewer network Company site name BORROWASH - BYPASS (CSO) EA ID / permit SVT02110 · T/48/02741/O Outlet location SK4228335136 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 5 / 4.6 Long-term average 14.6 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 21 hours spilling →	Ock Brook	22	21	up 340%	100%
Hortonwood Trench CSO Storm discharge at pumping station Company site name HORTONWOOD TRENCH (CSO) EA ID / permit SVT01178 · S/04/55294/O Outlet location SJ6908413866 (OS grid reference) · View on Apple Maps WFD catchment Red Strine - source to conf R Strine (GB109054050120) 2024 spills / hours 34 / 53 Long-term average 25.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Tributary of Crow Brook	16	21	down 53%	100%
Checkley Sewage Pumping Station Storm discharge at pumping station Company site name CHECKLEY - RECTORY FARM (CSO) EA ID / permit SVT00520 · T/32/36444/O Outlet location SK0286437627 (OS grid reference) · View on Apple Maps WFD catchment Tean from Cheadle Catchment to River Dove (GB104028052450) 2024 spills / hours 30 / 69 Long-term average 19.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 21 hours spilling →	River Tean	7	21	down 77%	100%
Newport - Water Lane Chamber 2 (CSO) Overflow on sewer network EA ID / permit SVT02469 · Unpermitted Outlet location SJ7437419399 (OS grid reference) · View on Apple Maps WFD catchment Strine Bk - source to conf Wall Bk (GB109054050160) 2024 spills / hours 13 / 22 Long-term average 20.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Strine Brook	20	21	up 54%	99%
Farnsfield Sewage Treatment Works Inlet overflow at sewage works Sewage works Farnsfield Company site name FARNSFIELD STW (CSO) EA ID / permit SVT00887 · T/64/45766/R Outlet location SK6627756168 (OS grid reference) · View on Apple Maps WFD catchment Greet Catchment (trib of Trent) (GB104028053410) 2024 spills / hours 31 / 66 Long-term average 36.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Cotton Mill Dyke, Trib R Greet	20	21	down 35%	100%
Hillmorton Road CSO Overflow on sewer network Company site name KNOWLE - HILLMORTON ROAD (CSO) EA ID / permit SVT01137 · T/11/21467/O Outlet location SP1735576497 (OS grid reference) · View on Apple Maps WFD catchment Blythe from Source to Cuttle Brook (GB104028042400) 2024 spills / hours 7 / 25 Long-term average 3.7 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Purnell'S Brook	4	21	down 43%	100%
Station Road Overflow on sewer network Company site name LITTLETHORPE - STATION ROAD (CSO) EA ID / permit SVT02178 · DT/8040 Outlet location SP5410097300 (OS grid reference) · View on Apple Maps WFD catchment Soar from Thurlaston Brook to Sence (GB104028046880) 2024 spills / hours 6 / 25 Long-term average 9.0 spills a year (monitored since 2019) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Soar (Tributary)	2	21	down 67%	100%
Thorpe Satchville STW Storm tank at sewage works Sewage works Thorpe Satchville Company site name THORPE SATCHVILLE (STW) EA ID / permit SVT02309 · T/55/45647/R Outlet location SK7301010840 (OS grid reference) · View on Apple Maps WFD catchment Queniborough Brook Catchment (trib of Wreake) (GB104028047450) 2024 spills / hours 24 / 89 Long-term average 22.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 21 hours spilling →	Tributary of Gaddesby Brook	4	21	down 83%	100%
Fordrough Lane CSO Overflow on sewer network Company site name BORDESLEY GREEN - FORDROUGH LA 142 (CSO) EA ID / permit SVT00915 · T/10/22687/O Outlet location SP1078187134 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 1 / 0.4 Long-term average 7.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Trib of River Tame	10	21	up 900%	99%
High Street Badsey CSO Overflow on sewer network Company site name BADSEY - HIGH STREET/ROYAL BRITISH LEGION (CSO) EA ID / permit SVT01123 · S/16/12237/O Outlet location SP0677043470 (OS grid reference) · View on Apple Maps WFD catchment Broadway-Badsey Bk - source to conf R Avon (GB109054039350) 2024 spills / hours 34 / 180 Long-term average 29.6 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Badsey Brook	8	21	down 76%	100%
Dowdeswell CSO Overflow on sewer network Company site name CHARLTON KINGS - DOWDSWELL STORM (CSO) EA ID / permit SVT00787 · S/20/23189/O Outlet location SO9763420352 (OS grid reference) · View on Apple Maps WFD catchment Chelt - source to M5 (GB109054032820) 2024 spills / hours 1 / 0.0 Long-term average 48.7 spills a year (monitored since 2019) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Chelt	4	21	up 300%	98%
Canley CSO Overflow on sewer network Company site name CANLEY - TOCIL CROFT SPS (SSTO) EA ID / permit SVT00463 · S/11/04668/R Outlet location SP3047375856 (OS grid reference) · View on Apple Maps WFD catchment Canley Bk - source to conf with Finham Bk (GB109054044520) 2024 spills / hours 35 / 101 Long-term average 21.7 spills a year (monitored since 2023) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 21 hours spilling →	Tributary of Canley Brook	4	21	down 89%	100%
New Street CSO Overflow on sewer network Company site name BURTON UPON TRENT - NEW ST (CSO) EA ID / permit SVT00438 · T/24/21517/O Outlet location SK2539123995 (OS grid reference) · View on Apple Maps WFD catchment Trent - R Tame to R Dove (GB104028047180) 2024 spills / hours 5 / 7.1 Long-term average 3.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 20 hours spilling →	River Trent	6	20	up 20%	99%
Overseal Wastewater Treatment Works Inlet overflow at sewage works Sewage works Overseal Company site name OVERSEAL STW (CSO) EA ID / permit SVT01741 · 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 12 / 3.2 Long-term average 31.2 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 20 hours spilling →	Tributary of River Mease	18	20	up 50%	100%
Beeley (SSO) Storm discharge at pumping station EA ID / permit SVT00232 · Permit application submitted Outlet location SK2645667450 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Westend to Wye (GB104028057880) 2024 spills / hours 9 / 3.4 Long-term average 15.8 spills a year (monitored since 2021) Monitor below 90% Installation set-up/design issue · Resolved - Apr Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Beeley Brook	8	20	down 11%	88%
Bridge Street CSO Overflow on sewer network Company site name BELPER - BRIDGE STREET 122/130 (CSO) EA ID / permit SVT00242 · T/42/20903/O Outlet location SK3455847990 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 73 / 65 Long-term average 91.8 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 20 hours spilling →	Tributary of River Derwent	35	20	down 52%	100%
Rolleston Road CSO Overflow on sewer network Company site name HORNINGLOW - ROLLESTON ROAD 151 (CSO) EA ID / permit SVT01903 · T/24/21576/O Outlet location SK2411525727 (OS grid reference) · View on Apple Maps WFD catchment Trent - R Tame to R Dove (GB104028047180) 2024 spills / hours 8 / 11 Long-term average 19.6 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Tributary of River Trent	12	20	up 50%	100%
Quarry Park Storm Sewer Overflow Overflow on sewer network Company site name SHREWSBURY - QUARRY PK (CSO) EA ID / permit SVT01837 · S/02/21029/O Outlet location SJ4872012180 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf Bele Bk to conf Sundorne Bk (GB109054049142) 2024 spills / hours 24 / 57 Long-term average 41.0 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	River Severn	15	20	down 38%	100%
CSO at Former Titford PS Overflow on sewer network Company site name WHITEHEATH - TITFORD LANE (CSO) EA ID / permit SVT00702 · T/08/36285/O Outlet location SO9850587671 (OS grid reference) · View on Apple Maps WFD catchment Tame (Oldbury Arm) - source to conf R Tame (Wton Arm) (GB104028042601) 2024 spills / hours 11 / 14 Long-term average 12.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Tame	7	20	down 36%	100%
Broadholme Pumping Station Storm discharge at pumping station Company site name BELPER - BROADHOLM (SSO) EA ID / permit SVT00363 · T/42/01142/O Outlet location SK3400047000 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 9 / 38 Long-term average 8.7 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	River Derwent	6	20	down 33%	96%
Furnace End Sewage Treatment Works Storm tank at sewage works Sewage works Furnace End Company site name FURNACE END (STW) EA ID / permit SVT00937 · T/15/35597/R Outlet location SP2463291365 (OS grid reference) · View on Apple Maps WFD catchment Bourne - source to R Tame (GB104028042481) 2024 spills / hours 5 / 28 Long-term average 3.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 20 hours spilling →	Tributary of River Bourne	4	20	down 20%	100%
Green Lane/Beatrice Street Jct CSO Overflow on sewer network Company site name BLOXWICH - GREEN LANE/BEATRICE ST (CSO) EA ID / permit SVT01003 · T/08/35259/O Outlet location SK0217700601 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook from Source to River Tame (GB104028046990) 2024 spills / hours 39 / 62 Long-term average 20.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Ford Brook	28	20	down 28%	100%
Londonderry Lane CSO Overflow on sewer network Company site name SMETHWICK - LONDONDERRY LANE (CSO) EA ID / permit SVT01397 · T/09/30212/O Outlet location SP0146288180 (OS grid reference) · View on Apple Maps WFD catchment Hockley Brook Catchment (trib of Rea) (GB104028042640) 2024 spills / hours 9 / 5.0 Long-term average 13.4 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 20 hours spilling →	Stoney Brook via SWS	16	20	up 78%	99%
Rugeley Sewage Treatment Works Storm tank at sewage works Sewage works Rugeley Company site name RUGELEY STW (SSTO) EA ID / permit SVT01927 · T/05/36077/R Outlet location SK0332020270 (OS grid reference) · View on Apple Maps WFD catchment Trent from River Sow to Moreton Brook (GB104028047300) 2024 spills / hours 18 / 68 Long-term average 9.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	River Trent	8	20	down 56%	99%
Kirkby-in-Ashfield - Lane End CSO Storm discharge at pumping station Company site name KIRKBY IN ASHFIELD - LANE END (CSO) EA ID / permit SVT01296 · T/61/45981/O Outlet location SK5017055950 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Source to Nethergreen Brook (GB104028052740) 2024 spills / hours 66 / 132 Long-term average 28.6 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 20 hours spilling →	River Erewash	13	20	down 80%	98%
Birchall Avenue CSO Overflow on sewer network Company site name ABBEYDALE - BIRCHALL AVENUE (CSO) EA ID / permit SVT00269 · S/20/12173/O Outlet location SO8550415109 (OS grid reference) · View on Apple Maps WFD catchment Sud Bk - source to conf R Severn (GB109054032701) 2024 spills / hours 18 / 43 Long-term average 5.5 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	Sud Brook	10	20	down 44%	100%
Brook Street CSO Overflow on sewer network Company site name WALL HEATH - BROOK ST/CROSS ST (CSO) EA ID / permit SVT00382 · S/06/07949/O Outlet location SO8754790138 (OS grid reference) · View on Apple Maps WFD catchment Bobs-Holbeche Bk - source to conf Smestow Bk (GB109054044830) 2024 spills / hours 19 / 27 Long-term average 13.6 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Holbeache Brook	13	20	down 32%	100%
Endsor Sewage P S Storm discharge at pumping station Company site name EDENSOR (SSO) EA ID / permit SVT00867 · T/38/40241/O Outlet location SK2568069580 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Westend to Wye (GB104028057880) 2024 spills / hours 9 / 7.2 Long-term average 16.2 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Derwent	8	20	down 11%	100%
Various CSO'S - Solihull/Olton Overflow on sewer network Company site name SOLIHULL - MALVERN PARK (CSO) EA ID / permit SVT02390 · T/11/02240/O Outlet location SP1180077900 (OS grid reference) · View on Apple Maps WFD catchment Blythe from Source to Cuttle Brook (GB104028042400) 2024 spills / hours 4 / 5.5 Long-term average 22.8 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Blythe (Trib)	10	20	up 150%	99%
Coalville - Meadow Lane CSO Overflow on sewer network Company site name COALVILLE - MEADOW LANE (CSO) EA ID / permit SVT00594 · T/57/09031/O Outlet location SK4477214651 (OS grid reference) · View on Apple Maps WFD catchment Grace Dieu Brook Catchment (trib of Black Brook) (GB104028047090) 2024 spills / hours 4 / 6.5 Long-term average 3.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	Grace Dieu Brook	3	20	down 25%	100%
Langar Sewage Treatment Works Storm tank at sewage works (with treatment) Sewage works Langar Company site name LANGAR STW IPS (SSTO) EA ID / permit SVT01311 · T/66/46151/R Outlet location SK7342634134 (OS grid reference) · View on Apple Maps WFD catchment Stroom Dyke Catchment (trib of Smite) (GB104028053030) Treatment Reed bed 2024 spills / hours 7 / 23 Long-term average 7.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Tributary of Stroom Dyke	5	20	down 29%	99%
Welford - Welford Road (SSO) Storm discharge at pumping station EA ID / permit SVT02482 · Permit application submitted Outlet location SP6451280764 (OS grid reference) · View on Apple Maps WFD catchment Avon (Warks) - source to Claycoton-Yelvertoft Bk (GB109054043930) 2024 spills / hours 11 / 26 Long-term average 10.3 spills a year (monitored since 2023) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Avon	13	20	up 18%	100%
Nottingham - Queens Road (CSO) Overflow on sewer network EA ID / permit SVT01683 · Permit application submitted Outlet location SK5712538068 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 11 / 60 Long-term average 4.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Rea	6	20	down 45%	100%
Gravelly Hill -Off Walker Drive CSO Overflow on sewer network Company site name GRAVELLY HILL - OFF WALKER DR (CSO) EA ID / permit SVT00985 · TSC2012 Outlet location SP0970090030 (OS grid reference) · View on Apple Maps WFD catchment Tame - conf two arms to R Rea (GB104028046842) 2024 spills / hours 3 / 1.2 Long-term average 8.7 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Aug Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 20 hours spilling →	River Tame	9	20	up 200%	83%
Boothen Old Road 1 CSO Overflow on sewer network Company site name BOOTHEN - BOOTHEN OLD ROAD 1 (CSO) EA ID / permit SVT00307 · T/01/20465/O Outlet location SJ8785644378 (OS grid reference) · View on Apple Maps WFD catchment Trent from Fowlea Brook to Tittensor (GB104028053271) 2024 spills / hours 13 / 13 Long-term average 8.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Trent	14	20	up 8%	100%
Alfreton - Brook Avenue CSO Overflow on sewer network Company site name ALFRETON - BROOK AVENUE (CSO) EA ID / permit SVT00044 · T/41/20315/O Outlet location SK4133955200 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 22 / 24 Long-term average 20.4 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 20 hours spilling →	Oakerthorpe Brook	18	20	down 18%	100%
Dads Lane Combined Sewer Overflow Overflow on sewer network Company site name SELLY OAK - DADS LANE (CSO) EA ID / permit SVT00717 · T/12/36505/O Outlet location SP0604582168 (OS grid reference) · View on Apple Maps WFD catchment Rea source to Bourn Brook (GB104028042510) 2024 spills / hours 16 / 32 Long-term average 9.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Rea	10	20	down 38%	100%
Shrewsbury - Earls View Hill (CSO) Overflow on sewer network EA ID / permit SVT01813 · S/02/04974/O Outlet location SJ4844512520 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf Bele Bk to conf Sundorne Bk (GB109054049142) 2024 spills / hours 37 / 43 Long-term average 15.7 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 20 hours spilling →	River Severn	19	20	down 49%	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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