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
Waterhouses Pumping Station Storm discharge at pumping station Company site name WATERHOUSES - A523 (SSO) EA ID / permit SVT02467 · T/27/30247/O Outlet location SK0854050220 (OS grid reference) · View on Apple Maps WFD catchment Hamps from Source to R Manifold (GB104028052900) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2021) Monitor below 90% Installation set-up/design issue · Resolved - Feb Investigation Operational investigation completed Improvement No improvement action in reporting period	River Hamps	0	0.0	no change	85%
Watnall Road CSO Overflow on sewer network Company site name HUCKNALL - WATNALL ROAD (CSO) EA ID / permit SVT02474 · T/63/03781/O Outlet location SK5261747978 (OS grid reference) · View on Apple Maps WFD catchment Leen from Source to Day Brook (GB104028052880) 2024 spills / hours 1 / 1.1 Long-term average 1.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Trib of River Leen	0	0.0	down 100%	100%
Wednesfield - Amos Ln-Bellamy Ln SO Overflow on sewer network Company site name WEDNESFIELD - AMOS LANE/BELLAMY LA (CSO) EA ID / permit SVT02479 · T/08/22021/O Outlet location SJ9549000772 (OS grid reference) · View on Apple Maps WFD catchment Tame (W/ton Arm) source to conf Oldbury (GB104028046930) 2024 spills / hours 4 / 4.5 Long-term average 2.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period	Waddens Brook	0	0.0	down 100%	97%
Wednesfield Road CSO Overflow on sewer network Company site name SPRINGFIELD -WEDNESFIELD RD/SUN ST (CSO) EA ID / permit SVT02480 · S/06/08749/O Outlet location SO9209399954 (OS grid reference) · View on Apple Maps WFD catchment Smestow Bk - source to conf Wom-Penn Bk (GB109054049340) 2024 spills / hours 1 / 0.2 Long-term average 1.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Smestow Brook	0	0.0	down 100%	100%
Wellington - Gas Works CSO Storm discharge at pumping station Company site name WELLINGTON - GAS WORKS (CSO) EA ID / permit SVT02489 · S/04/50010/O Outlet location SJ6390612045 (OS grid reference) · View on Apple Maps WFD catchment Beanhill Brook source to shawbirch B4394 (GB109054050090) 2024 spills / hours 3 / 2.8 Long-term average 10.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Tributary of River Tern	0	0.0	down 100%	97%
Wellington St/Franklin St Jct CS0 Overflow on sewer network Company site name WINSON GREEN - WELLINGTON ST (CSO) EA ID / permit SVT02493 · T/09/21430/O Outlet location SP0389388498 (OS grid reference) · View on Apple Maps WFD catchment Hockley Brook Catchment (trib of Rea) (GB104028042640) 2024 spills / hours 0 / 0.0 Long-term average 2.9 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Tributary of Hockley Brook	0	0.0	no change	100%
Wessington - Matlock Road CSO Overflow on sewer network Company site name WESSINGTON - MATLOCK ROAD (CSO) EA ID / permit SVT02503 · T/41/22277/O Outlet location SK3741157551 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Tributary of Birches Brook	0	0.0	no change	100%
Northfield-West Heath 68 CSO Overflow on sewer network Company site name NORTHFIELD - WEST HEATH 68 (CSO) EA ID / permit SVT02511 · DT/9868 Outlet location SP0256078570 (OS grid reference) · View on Apple Maps WFD catchment Rea source to Bourn Brook (GB104028042510) 2024 spills / hours 1 / 1.1 Long-term average 1.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Turves Green Brook	0	0.0	down 100%	100%
West Malvern - Dewalden Rd (CSO) Overflow on sewer network EA ID / permit SVT02513 · Permit application submitted Outlet location SO7609945489 (OS grid reference) · View on Apple Maps WFD catchment Cradley Bk - source to conf Suckley Bk (GB109054039910) 2024 spills / hours 1 / 3.7 Long-term average 0.5 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Trib Cradley Brook	0	0.0	down 100%	98%
Blackfriars - Westgate (SSO) Storm discharge at pumping station EA ID / permit SVT02514 · Permit application submitted Outlet location SO8259118844 (OS grid reference) · View on Apple Maps WFD catchment Severn (E Channel) - Horsebere Bk to Severn Est (GB109054032750) 2024 spills / hours 1 / 0.1 Long-term average 1.2 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement No improvement action in reporting period	River Derwent	0	0.0	down 100%	100%
Westray Drive CSO Overflow on sewer network Company site name HINCKLEY- WESTRAY DRIVE (CSO) EA ID / permit SVT02527 · T/19/20313/O Outlet location SP4198794173 (OS grid reference) · View on Apple Maps WFD catchment Sketchley Brook from Source to River Anker (GB104028042470) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Battling Brook	0	0.0	no change	100%
Wheelwright Rd/Alleyne Rd CSO Overflow on sewer network Company site name BROMFORD - WHEELWRIGHT ROAD (CSO) EA ID / permit SVT02533 · T/10/22777/O Outlet location SP1125289847 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 5 / 0.6 Long-term average 3.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	River Tame	0	0.0	down 100%	100%
Wightwick - Sabrina Road 47 (CSO) Overflow on sewer network EA ID / permit SVT02552 · EPRJB3490VP Outlet location SO8637497896 (OS grid reference) · View on Apple Maps WFD catchment Smestow Bk - source to conf Wom-Penn Bk (GB109054049340) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Smestow Brook	0	0.0	no change	100%
Wigston - Crow Mills PS (CSO) Storm discharge at pumping station EA ID / permit SVT02556 · T/51/12328/O Outlet location SP5889097690 (OS grid reference) · View on Apple Maps WFD catchment Sence from Countesthorpe Brook to Soar (GB104028046870) 2024 spills / hours 0 / 0.0 Long-term average 5.7 spills a year (monitored since 2019) Investigation Operational investigation completed Improvement Operational improvement completed	River Sence	0	0.0	no change	100%
Wilkinsons Close CSO Overflow on sewer network Company site name PLEASLEY - WILKINSONS CLOSE 6 (CSO) EA ID / permit SVT02560 · T/71/21095/O Outlet location SK5025563964 (OS grid reference) · View on Apple Maps WFD catchment Meden from Source to Sookholme Brook (GB104028058020) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Meden	0	0.0	no change	100%
Willenhall - Walsall Rd-Acorn St SO Overflow on sewer network Company site name WILLENHALL - WALSALL ROAD/ACORN ST (CSO) EA ID / permit SVT02561 · T/08/21113/O Outlet location SO9716098677 (OS grid reference) · View on Apple Maps WFD catchment Tame (W/ton Arm) source to conf Oldbury (GB104028046930) 2024 spills / hours 0 / 0.0 Long-term average 0.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	River Tame	0	0.0	no change	100%
Coach Way - Willington SPS Storm discharge at pumping station Company site name WILLINGTON - HALL LANE (SSO) EA ID / permit SVT02565 · T/36/45168/O Outlet location SK3015428063 (OS grid reference) · View on Apple Maps WFD catchment Trent from Dove to Derwent (GB104028047420) 2024 spills / hours 14 / 65 Long-term average 12.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed	River Trent	0	0.0	down 100%	100%
Witcombe - Pillcroft Close (CSO) Overflow on sewer network EA ID / permit SVT02578 · Unpermitted Outlet location SO9040515987 (OS grid reference) · View on Apple Maps WFD catchment Horsebere Bk - source to conf R Severn (GB109054032760) 2024 spills / hours 1 / 0.1 Long-term average 0.3 spills a year (monitored since 2022) Investigation Operational investigation ongoing Improvement No improvement action in reporting period	Horsbere Brook	0	0.0	down 100%	100%
Witton - George Road 303 (CSO) Overflow on sewer network EA ID / permit SVT02581 · Unpermitted Outlet location SP0916791375 (OS grid reference) · View on Apple Maps WFD catchment Tame - conf two arms to R Rea (GB104028046842) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	Brookvale Park Reservoir	0	0.0	no change	100%
Wednesbury - Woden Road West (CSO) Overflow on sewer network EA ID / permit SVT02585 · EPRJB3793VC Outlet location SO9838994279 (OS grid reference) · View on Apple Maps WFD catchment Tame (Oldbury Arm) - source to conf R Tame (Wton Arm) (GB104028042601) 2024 spills / hours 1 / 0.3 Long-term average 0.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Soak Mere Drain	0	0.0	down 100%	100%
Wolverhampton - Bilston Road 2 CSO Overflow on sewer network Company site name WOLVERHAMPTON - BILSTON RD (CSO) EA ID / permit SVT02591 · T/08/20244/O Outlet location SO9319197403 (OS grid reference) · View on Apple Maps WFD catchment Tame (W/ton Arm) source to conf Oldbury (GB104028046930) 2024 spills / hours 1 / 0.3 Long-term average 5.0 spills a year (monitored since 2021) Monitor below 90% Telemetry or data archiving failure / issue · Scheduled Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Trib of River Tame Tunnel	0	0.0	down 100%	77%
Wolverhampton Road CSO Overflow on sewer network Company site name PELSALL - WOLVERHAMPTON RD (CSO) EA ID / permit SVT02595 · T/08/35057/O Outlet location SK0112503082 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook from Source to River Tame (GB104028046990) 2024 spills / hours 0 / 0.0 Long-term average 6.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Tributary of Ford Brook	0	0.0	no change	100%
Earlswood - Wood End Lane PS (SO) Storm discharge at pumping station EA ID / permit SVT02597 · T/11/35906/O Outlet location SP2088162477 (OS grid reference) · View on Apple Maps WFD catchment Sherbourne Bk - source to conf R Avon (GB109054043730) 2024 spills / hours 7 / 72 Long-term average 1.8 spills a year (monitored since 2020) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jan Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Tributary of Sherbourne Brook	–	–		–
Wood Road/School Road CSO Overflow on sewer network Company site name TETTENHALL - SCHOOL RD/THE CRES (CSO) EA ID / permit SVT02602 · EPRQB3395WV Outlet location SO8780099130 (OS grid reference) · View on Apple Maps WFD catchment Penk from Source toSaredon Brook (GB104028046680) 2024 spills / hours 1 / 0.0 Long-term average 0.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing	River Penk/Wergs Brook	0	0.0	down 100%	100%
Wood Road/School Road CSO Overflow on sewer network Company site name TETTENHALL - WOOD ROAD (CSO) EA ID / permit SVT02603 · EPRHB3993EY Outlet location SO8780099130 (OS grid reference) · View on Apple Maps WFD catchment Smestow Bk - source to conf Wom-Penn Bk (GB109054049340) 2024 spills / hours 1 / 0.1 Long-term average 0.4 spills a year (monitored since 2019) Investigation Operational investigation completed Improvement No improvement action in reporting period	River Penk/Wergs Brook	0	0.0	down 100%	100%
Wood Street - Kimberley Road CSO Overflow on sewer network Company site name RUGBY - WOOD STREET (CSO) EA ID / permit SVT02605 · S/10/04488/O Outlet location SP5073476716 (OS grid reference) · View on Apple Maps WFD catchment Avon - ClaycotonYelvertoft Bk to conf R Sowe (GB109054043920) 2024 spills / hours 0 / 0.0 Long-term average 0.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Avon	0	0.0	no change	100%
Woodcote Road CSO Overflow on sewer network Company site name ERDINGTON - WOODCOTE ROAD (CSO) EA ID / permit SVT02609 · T/10/36441/O Outlet location SP1332690263 (OS grid reference) · View on Apple Maps WFD catchment Tame - R Rea to R Blythe (GB104028046841) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Tributary of River Tame	0	0.0	no change	98%
Woodhouse SPS and Various SPS Storm discharge at pumping station Company site name SILEBY - COSSINGTON ROAD (SSO) EA ID / permit SVT02614 · T/56/02858/O Outlet location SK5527014480 (OS grid reference) · View on Apple Maps WFD catchment Soar from Rothley Brook to Long Whatton Brook (GB104028047211) 2024 spills / hours 10 / 96 Long-term average 16.7 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	Various Sites River Soar	0	0.0	down 100%	100%
Woodhouse SPS and Various SPS Storm discharge at pumping station Company site name COSSINGTON - MAIN STREET (SSO) EA ID / permit SVT02615 · EPRKB3594RG Outlet location SK5867013010 (OS grid reference) · View on Apple Maps WFD catchment Soar from Rothley Brook to Long Whatton Brook (GB104028047211) 2024 spills / hours 0 / 0.0 Long-term average 1.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed	Various Sites River Soar	0	0.0	no change	100%
Woods Lane CSO Overflow on sewer network Company site name DERBY - WOODS LANE 74 (CSO) EA ID / permit SVT02617 · T/47/22321/O Outlet location SK3475935493 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 0 / 0.0 Long-term average 1.0 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement No improvement action in reporting period	Littleover Brook	0	0.0	no change	100%
Woods Lane/Stockbrook St Jct CSO Overflow on sewer network Company site name DERBY - WOODS LANE/STOCKBROOK ST (CSO) EA ID / permit SVT02618 · T/47/22322/O Outlet location SK3474035733 (OS grid reference) · View on Apple Maps WFD catchment Markeaton Brook from Mackworth Brook to Derwent (GB104028052830) 2024 spills / hours 1 / 0.0 Long-term average 1.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period	Littleover Brook	1	0.0	no change	98%
Worcester - Shrub Hill Rd Tank (CSO) Overflow on sewer network EA ID / permit SVT02632 · Permit application submitted Outlet location SO8545655281 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf R Stour to conf RIver Teme (GB109054049144) 2024 spills / hours 3 / 0.3 Long-term average 2.4 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement No improvement action in reporting period	Worcester and Birmingham Canal	0	0.0	down 100%	100%
Wyaston Sewage Treatment Works Inlet overflow at sewage works Sewage works Wyaston Company site name WYASTON STW (CSO) EA ID / permit SVT02642 · T/34/35859/R Outlet location SK1941142454 (OS grid reference) · View on Apple Maps WFD catchment Hilton Bk (trib of R Dove) (GB104028052870) 2024 spills / hours 116 / 229 Long-term average 80.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed	Wyaston Brook	0	0.0	down 100%	99%
Yardley Wood – Priory Road Mh 9601 (CSO) Overflow on sewer network EA ID / permit SVT02649 · Unpermitted Outlet location SP1004179643 (OS grid reference) · View on Apple Maps WFD catchment Cole from Source to Springfield (GB104028042501) 2024 spills / hours 13 / 1.8 Long-term average 15.5 spills a year (monitored since 2023) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jan Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed	River Cole	–	–		–
Yelvertoft STW Storm tank at sewage works Sewage works Yelvertoft Company site name YELVERTOFT STW (SSTO) EA ID / permit SVT02654 · S/10/26054/R Outlet location SP5985975993 (OS grid reference) · View on Apple Maps WFD catchment Claycoton-Yelvertoft Bk - source to conf R Avon (GB109054043910) 2024 spills / hours 17 / 77 Long-term average 9.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period	Clay Coton Brook	0	0.0	down 100%	96%
Yew Tree - Brackendale Drive CSO Overflow on sewer network Company site name YEW TREE - BRACKENDALE DRIVE (CSO) EA ID / permit SVT02655 · EPRCP3826XC Outlet location SP0309095430 (OS grid reference) · View on Apple Maps WFD catchment Tame - conf two arms to R Rea (GB104028046842) 2024 spills / hours 0 / 0.0 Long-term average 5.0 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period	Yew Tree Brook	0	0.0	no change	100%
Yorkley Slade (CSO) Storm discharge at pumping station EA ID / permit SVT02656 · Permit application submitted Outlet location SO6424406729 (OS grid reference) · View on Apple Maps WFD catchment Cannop Bk - source to R Severn Estuary (GB109054032640) 2024 spills / hours 63 / 733 Long-term average 57.5 spills a year (monitored since 2023) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jan Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed	Unnamed Tributary of Plummer'S Brook	–	–		–
Walsall – Mackay Rd/Shackleton Rd (CSO) Overflow on sewer network EA ID / permit SVT02662 · Unpermitted Outlet location SK0104702766 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook from Source to River Tame (GB104028046990) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2025) Investigation Operational investigation completed Improvement No improvement action in reporting period	Ford Brook	0	0.0	no change	99%
Dennis Street Storm Overflow Overflow on sewer network Company site name HUGGLESCOTE - DENNIS STREET (CSO) EA ID / permit SVT02666 · T/20/22300/O Outlet location SK4243012420 (OS grid reference) · View on Apple Maps WFD catchment Sence from Source to Ibstock Brook (GB104028046750) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period	River Sence	0	0.0	no change	100%
Aldridge - Health Centre (CSO) Overflow on sewer network Company site name ALDRIDGE – HEALTH CENTER (CSO) EA ID / permit SVT02669 · Unpermitted Outlet location SK0543300486 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook from Source to River Tame (GB104028046990) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2025) Investigation Operational investigation completed Improvement No improvement action in reporting period	Tributary of Ford Brook	0	0.0	no change	100%
Northway Combined Sewer Overflow Overflow on sewer network Company site name DUDLEY - NORTHWAY 270 (CSO) EA ID / permit SVT02674 · S/06/55392/O Outlet location SO9112094950 (OS grid reference) · View on Apple Maps WFD catchment Wom-Penn Bk - source to conf Smestow Bk (GB109054044930) 2024 spills / hours 0 / 0.0 Long-term average 0.7 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Penn Brook	0	0.0	no change	100%
Stourbridge - Hagley Road (CSO) Overflow on sewer network EA ID / permit SVT02679 · Unpermitted Outlet location SO8993084750 (OS grid reference) · View on Apple Maps WFD catchment Stour (Worcs) source to conf Smestow Bk (GB109054044750) 2024 spills / hours 1 / 0.1 Long-term average 0.8 spills a year (monitored since 2022) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Stour	0	0.0	down 100%	98%
Evesham - Worcester Road (SSO) Storm discharge at pumping station EA ID / permit SVT02688 · Permit application submitted Outlet location SP0338245045 (OS grid reference) · View on Apple Maps WFD catchment Avon conf Workman Br, Evesham to conf R Severn (GB109054044403) 2024 spills / hours 7 / 11 Long-term average 0.0 spills a year (monitored since 2025) Investigation Operational investigation completed Improvement No improvement action in reporting period	River Avon	0	0.0	down 100%	90%
Market Warsop - Stonebridge Ln (CSO) Overflow on sewer network EA ID / permit SVT02689 · Unpermitted Outlet location SK5586868030 (OS grid reference) · View on Apple Maps WFD catchment Meden from Sookholme Brook to Maun (GB104028058060) 2024 spills / hours 1 / 0.3 Long-term average 0.0 spills a year (monitored since 2025) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	River Meden	0	0.0	down 100%	98%
Breaston - Woodland Avenue (CSO) Overflow on sewer network Company site name BREASTON - WOODLAND AVENUE (SO) EA ID / permit SVT02691 · Unpermitted Outlet location SK4696633420 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent Water Body (GB104028052480) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2025) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period	Golden Brook	0	0.0	no change	100%
Long Lawford Sewage Pumping Station Storm discharge at pumping station Company site name LONG LAWFORD STORM PS 3DWF (SSTO) EA ID / permit SVT02694 · S/10/26066/R Outlet location SP4720077000 (OS grid reference) · View on Apple Maps WFD catchment Avon - ClaycotonYelvertoft Bk to conf R Sowe (GB109054043920) 2024 spills / hours 1 / 1.9 Long-term average 0.5 spills a year (monitored since 2024) Investigation Operational investigation completed Improvement UWWTR improvement completed	River Avon & Long Lawford Brk	0	0.0	down 100%	100%
Pendeford - Leybourne Cres PS (CSO) Storm discharge at pumping station EA ID / permit SVT02697 · Unpermitted Outlet location SJ8962902817 (OS grid reference) · View on Apple Maps WFD catchment Penk from Source toSaredon Brook (GB104028046680) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2025) Investigation Operational investigation completed Improvement Operational improvement completed	River Penk	0	0.0	no change	100%
Whaley Thorns - Main Road/Limes Ave (SO) Overflow on sewer network Company site name WHALEY THORNS - MAIN RD/LIMES AVE (SO) EA ID / permit SVT02698 · Unpermitted Outlet location SK5349470420 (OS grid reference) · View on Apple Maps WFD catchment Poulter from Source to Millwood Brook (GB104028058130) 2024 spills / hours 9 / 7.8 Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from Jan Investigation Operational investigation completed Improvement No improvement action in reporting period	River Poulter	–	–		–
Little Eaton - Duffield Road (SSO) Overflow on sewer network EA ID / permit SVT02701 · T/45/02964/O Outlet location SK3611741151 (OS grid reference) · View on Apple Maps WFD catchment Bottle Brook Catchment (trib of Derwent) (GB104028052300) 2024 spills / hours 0 / 0.0 Long-term average 0.0 spills a year (monitored since 2025) Investigation Operational investigation completed Improvement No improvement action in reporting period	Bottle Brook	0	0.0	no change	100%
Halam - Mansfield Road (CSO) Overflow on sewer network EA ID / permit SVT02702 · T/64/00318/O Outlet location SK6760054800 (OS grid reference) · View on Apple Maps WFD catchment River Greet Catchment (trib of Trent) (GB104028053410) 2024 spills / hours 22 / 127 Long-term average 0.0 spills a year (monitored since 2025) Monitor below 90% No longer operational as an overflow - permit revoked or to be revoked · Overflow no longer spilling to environment - from May Investigation Operational investigation completed Improvement Operational improvement completed	Halam Beck	0	0.0	down 100%	98%

Sewage treatment works

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

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