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
Wootton Wawen STW Storm tank at sewage works Sewage works Wootton Wawen Company site name WOOTTON WAWEN (STW) EA ID / permit SVT02628 · S/15/26259/R Outlet location SP1493062350 (OS grid reference) · View on Apple Maps WFD catchment Alne conf Preston Bagot Bk to conf Claverdon Bk (GB109054043760) 2024 spills / hours 54 / 475 Long-term average 31.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 148 hours spilling →	River Alne	20	148	down 63%	100%
Kedleston Road CSO Overflow on sewer network Company site name DERBY - KEDLESTON RD (CSO) EA ID / permit SVT01237 · T/47/21613/O Outlet location SK3371937738 (OS grid reference) · View on Apple Maps WFD catchment Markeaton Brook from Mackworth Brook to Derwent (GB104028052830) 2024 spills / hours 59 / 218 Long-term average 63.6 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 146 hours spilling →	Tributary of River Derwent	46	146	down 22%	100%
Hillmorton Storm Tanks Overflow on sewer network Company site name HILLMORTON - THE KENT (CSO) EA ID / permit SVT01138 · S/10/12157/O Outlet location SP5300074670 (OS grid reference) · View on Apple Maps WFD catchment Clifton Bk - source to conf R Avon (GB109054043900) 2024 spills / hours 0 / 0.0 Long-term average 8.5 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 145 hours spilling →	Hillmorton Paddox Brook	14	145	up from 0	100%
Silver Lane Sewage Pumping Station Storm discharge at pumping station Company site name MARCHINGTON - SILVER LANE (SSO) EA ID / permit SVT02048 · Permit application submitted Outlet location SK1369430630 (OS grid reference) · View on Apple Maps WFD catchment Dove - R Churnet to R Trent (GB104028052420) 2024 spills / hours 27 / 306 Long-term average 14.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 145 hours spilling →	Ditch Tributary of River Dove	13	145	down 52%	100%
Stanton Wastewater Treatment Works Storm tank at sewage works Sewage works Stanton Company site name STANTON - DERBYSHIRE STW (SSTO) EA ID / permit SVT02169 · EPRWB3535AJ Outlet location SK2446520997 (OS grid reference) · View on Apple Maps WFD catchment Darklands Brook Catchment (trib of Trent) (GB104028047310) 2024 spills / hours 109 / 1,643 Long-term average 69.9 spills a year (monitored since 2017) 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 144 hours spilling →	River Trent	35	144	down 68%	100%
Hill - A426 (SSO) Storm discharge at pumping station EA ID / permit SVT01135 · Permit application submitted Outlet location SP4542866883 (OS grid reference) · View on Apple Maps WFD catchment Leam - conf Rains Bk to conf R Itchen (GB109054044130) 2024 spills / hours 40 / 444 Long-term average 21.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 143 hours spilling →	Slutwell Stream	9	143	down 78%	99%
Leek - Junction Road CSO Overflow on sewer network Company site name LEEK - MACCLESFIELD ROAD (CSO) EA ID / permit SVT01339 · EPRHB3897RV Outlet location SJ9814655205 (OS grid reference) · View on Apple Maps WFD catchment Churnet from Meerbrook to Leekbrook (GB104028052770) 2024 spills / hours 69 / 178 Long-term average 52.3 spills a year (monitored since 2019) High-spill reason (company) Performance - Partial / no capacity due to blockage or restriction (e.g. roots / grid) - maintenance issue Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 142 hours spilling →	Tributary of River Churnet	61	142	down 12%	100%
Paddock Lane Sewage Pumping Station Storm discharge at pumping station Company site name STRATFORD - PADDOCK LANE PS (CSO) EA ID / permit SVT01748 · S/13/08373/O Outlet location SP1979253592 (OS grid reference) · View on Apple Maps WFD catchment Avon- Tramway Br Stratford to Workman Br Evesham (GB109054044401) 2024 spills / hours 58 / 325 Long-term average 43.5 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 142 hours spilling →	River Avon	20	142	down 66%	100%
Bagworth Main SPS Storm discharge at pumping station Company site name BAGWORTH - OFF HAWTHORN ROAD (CSO) EA ID / permit SVT00158 · NPSWQD006539 Outlet location SK4410008980 (OS grid reference) · View on Apple Maps WFD catchment Carlton Brook from Source to River Sence (GB104028046690) 2024 spills / hours 38 / 396 Long-term average 15.0 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 142 hours spilling →	Trib of River Sence	16	142	down 58%	100%
Winchcombe Sewage Treatment Works Storm tank at sewage works Sewage works Winchcombe Company site name WINCHCOMBE (STW) EA ID / permit SVT02571 · S/18/26092/R Outlet location SP0302029451 (OS grid reference) · View on Apple Maps WFD catchment Isbourne - source to conf R Avon (GB109054039631) 2024 spills / hours 56 / 421 Long-term average 38.0 spills a year (monitored since 2020) Monitor below 90% Telemetry or data archiving failure / issue · Resolved - Feb Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 142 hours spilling →	River Isbourne	29	142	down 48%	88%
Bottesford STW Storm tank at sewage works Sewage works Bottesford Company site name BOTTESFORD STW (SSTO) EA ID / permit SVT00311 · T/65/45553/R Outlet location SK8002639694 (OS grid reference) · View on Apple Maps WFD catchment Devon from Source to Smite (GB104028052490) 2024 spills / hours 40 / 326 Long-term average 27.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 141 hours spilling →	River Devon	16	141	down 60%	100%
Draycott SPS - Emergency Overflow Storm discharge at pumping station Company site name DRAYCOTT-SAWLEY ROAD (ESO) EA ID / permit SVT00791 · T/48/12102/O Outlet location SK4518031490 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 4 / 34 Long-term average 12.4 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Installation set-up/design issue · Resolved - May Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 141 hours spilling →	River Derwent	31	141	up 675%	65%
Weston Under Wetherley STW Storm tank at sewage works Sewage works Weston Under Wetherley Company site name WESTON-UNDER-WETHERLEY STW (SSTO) EA ID / permit SVT02525 · S/12/26152/R Outlet location SP3718068655 (OS grid reference) · View on Apple Maps WFD catchment Leam - conf R Itchen to conf R Avon (GB109054044140) 2024 spills / hours 62 / 872 Long-term average 39.7 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 141 hours spilling →	River Leam	11	141	down 82%	98%
Wheaton Aston STW Storm tank at sewage works Sewage works Wheaton Aston Company site name WHEATON ASTON STW (SSTO) EA ID / permit SVT02532 · T/03/35649/R Outlet location SJ8559212610 (OS grid reference) · View on Apple Maps WFD catchment Whiston Bk (GB104028046761) 2024 spills / hours 76 / 556 Long-term average 65.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 140 hours spilling →	Longnor Brook	24	140	down 68%	100%
Southam Pumping Station (SPS) Storm discharge at pumping station Company site name SOUTHAM - WATTONS LANE (CSO) EA ID / permit SVT02117 · S/12/25045/O Outlet location SP4135061650 (OS grid reference) · View on Apple Maps WFD catchment Stowe - source to conf R Itchen (GB109054044090) 2024 spills / hours 50 / 558 Long-term average 30.3 spills a year (monitored since 2023) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 140 hours spilling →	River Stowe	16	140	down 68%	100%
Shardlow STW Storm tank at sewage works Sewage works Shardlow Company site name SHARDLOW STW (SSTO) EA ID / permit SVT01984 · T/36/45805/R Outlet location SK4551730677 (OS grid reference) · View on Apple Maps WFD catchment Trent from Derwent to Soar (GB104028053120) 2024 spills / hours 46 / 446 Long-term average 39.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 139 hours spilling →	Trent and Mersey Canal	17	139	down 63%	99%
Atherstone Sewage Treatment Works Inlet overflow at sewage works Sewage works Atherstone Company site name ATHERSTONE STW (CSO) EA ID / permit SVT00144 · T/19/35541/R Outlet location SP3173898110 (OS grid reference) · View on Apple Maps WFD catchment Anker from Wem Brook to River Sence (GB104028046430) 2024 spills / hours 83 / 378 Long-term average 69.6 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement UWWTR improvement completed Volume & pollution Estimate from 138 hours spilling →	Tributary of River Anker	42	138	down 49%	99%
Bassetts Pole STW Storm tank at sewage works Sewage works Bassetts Pole Company site name BASSETTS POLE STW (SSTO) EA ID / permit SVT00197 · T/16/36166/R Outlet location SP1442898630 (OS grid reference) · View on Apple Maps WFD catchment Langley Bk - source to conf R Tame (GB104028046901) 2024 spills / hours 44 / 288 Long-term average 33.4 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 138 hours spilling →	Colletts Brook	26	138	down 41%	100%
Rugby Newbold STW Storm tank at sewage works Sewage works Rugby Newbold Company site name RUGBY NEWBOLD (STW) EA ID / permit SVT01919 · S/10/26528/R Outlet location SP4963776417 (OS grid reference) · View on Apple Maps WFD catchment Avon - ClaycotonYelvertoft Bk to conf R Sowe (GB109054043920) 2024 spills / hours 41 / 410 Long-term average 22.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 138 hours spilling →	The River Avon	17	138	down 59%	99%
Waterhouses STW Storm tank at sewage works Sewage works Waterhouses Company site name WATERHOUSES STW (SSTO) EA ID / permit SVT02468 · EPRWB3499NQ Outlet location SK0936950247 (OS grid reference) · View on Apple Maps WFD catchment Hamps from Source to R Manifold (GB104028052900) 2024 spills / hours 17 / 95 Long-term average 31.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 137 hours spilling →	Groundwater	19	137	up 12%	100%
Marchington Combined Sewer Overflow Overflow on sewer network Company site name MARCHINGTON - SILVER LANE-STORM (CSO) EA ID / permit SVT01491 · T/33/30319/O Outlet location SK1366630862 (OS grid reference) · View on Apple Maps WFD catchment Dove - R Churnet to R Trent (GB104028052420) 2024 spills / hours 3 / 12 Long-term average 37.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 137 hours spilling →	Marchington Brook	21	137	up 600%	100%
Cropwell Bishop STW Storm tank at sewage works Sewage works Cropwell Bishop Company site name CROPWELL BISHOP STW (SSTO) EA ID / permit SVT00686 · T/66/45846/R Outlet location SK6890936033 (OS grid reference) · View on Apple Maps WFD catchment Smite / Devon from Stroom Dyke to Cotham (GB104028052631) 2024 spills / hours 66 / 515 Long-term average 43.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 137 hours spilling →	Cropwell Bishop Brook	22	137	down 67%	100%
Nottingham - Hucknall Lane/Grindon Cresc (CSO) Overflow on sewer network EA ID / permit SVT01186 · EPRJB3790RS Outlet location SK5439746124 (OS grid reference) · View on Apple Maps WFD catchment Leen from Source to Day Brook (GB104028052880) 2024 spills / hours 29 / 179 Long-term average 29.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 136 hours spilling →	River Leen	30	136	up 3%	99%
Burton Stather Sewage Trtmnt Wrks Storm tank at sewage works Sewage works Burton Stather Sewage Trtmnt Wrks Company site name BURTON STATHER (STW) EA ID / permit SVT00433 · T/84/45914/R Outlet location SE8649117655 (OS grid reference) · View on Apple Maps WFD catchment Humber estuary TRaC (GB530402609203) 2024 spills / hours 22 / 167 Long-term average 31.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 136 hours spilling →	Burton and Flixborough Drain	27	136	up 23%	99%
Hixon Sewage Treatment Works Storm tank at sewage works Sewage works Hixon Company site name HIXON STW (SSTO) EA ID / permit SVT01153 · T/01/36221/R Outlet location SK0019624535 (OS grid reference) · View on Apple Maps WFD catchment Trent from Tittensor to River Sow (GB104028053272) 2024 spills / hours 113 / 1,222 Long-term average 73.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 136 hours spilling →	Pasturefields Brook	15	136	down 87%	100%
Malvern - Blackmore Park SPS Storm discharge at pumping station Company site name MALVERN - BLACKMORE PARK (CSO) EA ID / permit SVT00286 · S/08/22500/O Outlet location SO7987043363 (OS grid reference) · View on Apple Maps WFD catchment Pool Brook - source to conf R Severn (GB109054039720) 2024 spills / hours 17 / 201 Long-term average 12.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 134 hours spilling →	Tributary of Pool Brook	10	134	down 41%	100%
John Berrysford Close CSO Overflow on sewer network Company site name CHADDESDEN - JOHN BERRYSFORD CLOSE (CSO) EA ID / permit SVT01233 · T/48/22376/O Outlet location SK3766736036 (OS grid reference) · View on Apple Maps WFD catchment Chaddesden Brook Catchment (trib of Derwent) (GB104028052430) 2024 spills / hours 88 / 435 Long-term average 65.1 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 134 hours spilling →	Chaddesden Brook	53	134	down 40%	98%
Littleworth Pumping Station Storm discharge at pumping station Company site name LITTLEWORTH STW (CSO) EA ID / permit SVT01386 · S/17/25586/O Outlet location SO8870050260 (OS grid reference) · View on Apple Maps WFD catchment Stoulton Bk - source to conf Bow Bk (GB109054039520) 2024 spills / hours 45 / 313 Long-term average 37.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 134 hours spilling →	Trib Stoulton Brook	14	134	down 69%	100%
Banbury - Orchard Close (CSO) Overflow on sewer network EA ID / permit SVT00170 · Permit application submitted Outlet location SP3116439194 (OS grid reference) · View on Apple Maps WFD catchment Stour (Warks) - source to conf Nethercote Bk (GB109054039860) 2024 spills / hours 77 / 697 Long-term average 50.7 spills a year (monitored since 2023) High-spill reason (company) Performance - SW Infiltration Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 134 hours spilling →	Sutton Brook	32	134	down 58%	100%
Ironbridge (Shaft) SPS and Ladywood Storm discharge at pumping station Company site name IRONBRIDGE SHAFT (CSO) EA ID / permit SVT01218 · S/02/56046/O Outlet location SJ6762003300 (OS grid reference) · View on Apple Maps WFD catchment Severn conf M Wenlock-Farley Bk to conf R Worfe (GB109054049143) 2024 spills / hours 65 / 359 Long-term average 49.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 133 hours spilling →	River Severn (Non Tidal)	28	133	down 57%	100%
Chilcote Rbc Sewage Treatment Works Storm tank at sewage works Sewage works Chilcote Rbc Company site name CHILCOTE RBC (CSO) EA ID / permit SVT00537 · T/23/36154/R Outlet location SK2785910979 (OS grid reference) · View on Apple Maps WFD catchment Mease from Hooborough Brook to Trent (GB104028046560) 2024 spills / hours 80 / 245 Long-term average 63.2 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 133 hours spilling →	Chilcote Brook	72	133	down 10%	97%
Heage Sewage Treatment Works Storm tank at sewage works Sewage works Heage Company site name HEAGE STW – SSTO EA ID / permit SVT01100 · T/41/45771/R Outlet location SK3650350405 (OS grid reference) · View on Apple Maps WFD catchment Amber from Alfreton Brook to Derwent (GB104028052330) 2024 spills / hours 54 / 670 Long-term average 50.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 132 hours spilling →	Downmeadow Brook	9	132	down 83%	100%
Ticknall SPS Storm discharge at pumping station Company site name TICKNALL - MAIN STREET (SSO) EA ID / permit SVT02320 · T/36/21920/O Outlet location SK3604024000 (OS grid reference) · View on Apple Maps WFD catchment Carr-New Brook from Source to Ramsley Brook (GB104028047330) 2024 spills / hours 58 / 231 Long-term average 48.5 spills a year (monitored since 2020) 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 132 hours spilling →	Scots Brook	53	132	down 9%	100%
East Markham STW Storm tank at sewage works Sewage works East Markham Company site name EAST MARKHAM STW (SSTO) EA ID / permit SVT00826 · T/69/45785/R Outlet location SK7530072599 (OS grid reference) · View on Apple Maps WFD catchment Tuxford Beck Catchment (trib of North Beck) (GB104028058320) 2024 spills / hours 28 / 168 Long-term average 26.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 132 hours spilling →	Tributary of Laneham Beck	23	132	down 18%	100%
Edingley - Station Road (SSO) Storm discharge at pumping station EA ID / permit SVT02186 · Permit application submitted Outlet location SK6666155938 (OS grid reference) · View on Apple Maps WFD catchment Greet Catchment (trib of Trent) (GB104028053410) 2024 spills / hours 29 / 332 Long-term average 26.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 132 hours spilling →	Tributary of Aisby Beck	12	132	down 59%	91%
Bedworth Marston Lane STW Storm tank at sewage works Sewage works Bedworth Marston Lane Company site name BEDWORTH - MARSTON LANE STW (SSTO) EA ID / permit SVT00226 · T/19/36017/R Outlet location SP3680187603 (OS grid reference) · View on Apple Maps WFD catchment Wem Brook from Source to River Anker (GB104028042430) 2024 spills / hours 36 / 380 Long-term average 14.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement UWWTR improvement completed Volume & pollution Estimate from 132 hours spilling →	Wem Brook	13	132	down 64%	95%
Billesdon STW Inlet overflow at sewage works (with treatment) Sewage works Billesdon Company site name BILLESDON STW (CSO) EA ID / permit SVT00265 · T/51/45517/R Outlet location SK7133602350 (OS grid reference) · View on Apple Maps WFD catchment Sence from Source to Burton Brook (GB104028046650) Treatment Reed bed 2024 spills / hours 76 / 415 Long-term average 113.2 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 131 hours spilling →	Trib of River Sence	25	131	down 67%	100%
Woolstone Sewage Treatment Works Inlet overflow at sewage works Sewage works Woolstone Company site name WOOLSTONE STW (CSO) EA ID / permit SVT02627 · S/17/26098/R Outlet location SO9541430659 (OS grid reference) · View on Apple Maps WFD catchment Tirle Brook - source to the conf River Swilgate (GB109054039810) 2024 spills / hours 105 / 735 Long-term average 74.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 129 hours spilling →	Tirle Brook	28	129	down 73%	98%
Fillongley - Tamworth Road SPS Storm discharge at pumping station Company site name FILLONGLEY - TAMWORTH ROAD (SSO) EA ID / permit SVT00899 · T/15/35298/O Outlet location SP2793787947 (OS grid reference) · View on Apple Maps WFD catchment Didgeley Brook from Source to R Bourne (GB104028042410) 2024 spills / hours 52 / 345 Long-term average 42.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 129 hours spilling →	Didgley Brook	28	129	down 46%	100%
Weir Rd Sewage Pumping Station Storm discharge at pumping station Company site name HANWOOD - WEIR ROAD (SSO) EA ID / permit SVT02481 · S/02/56288/O Outlet location SJ4420009469 (OS grid reference) · View on Apple Maps WFD catchment Rea Bk - conf Pontesford Bk to conf R Severn (GB109054049630) 2024 spills / hours 24 / 237 Long-term average 16.9 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 129 hours spilling →	Rea Brook	14	129	down 42%	100%
Warmsworth Wastewater Treatment Wks Inlet overflow at sewage works Sewage works Warmsworth Wastewater Treatment Wks Company site name WARMSWORTH STW 6DWF (CSO) EA ID / permit SVT02447 · T/83/45838/R Outlet location SK5510099900 (OS grid reference) · View on Apple Maps WFD catchment St Catherine's Well Stream from Source to Torne (GB104028058420) 2024 spills / hours 55 / 110 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 No improvement action in reporting period Volume & pollution Estimate from 128 hours spilling →	Warmsworth Beck	43	128	down 22%	100%
Creswell Sewage Pumping Station Storm discharge at pumping station Company site name CRESWELL - CRAGS ROAD PS (CSO) EA ID / permit SVT00676 · T/73/45213/O Outlet location SK5368074300 (OS grid reference) · View on Apple Maps WFD catchment Millwood Brook Catchment (trib of Poulter) (GB104028058150) 2024 spills / hours 32 / 126 Long-term average 34.0 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 127 hours spilling →	Millwood Brook - Creswell Arm	35	127	up 9%	95%
Sneinton Meadow Ln/Daleside Rd Jnc Overflow on sewer network Company site name SNEINTON - MEADOW LANE/DALESIDE RD (CSO) EA ID / permit SVT02082 · T/64/21888/O Outlet location SK5907038770 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 32 / 238 Long-term average 23.4 spills a year (monitored since 2017) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 126 hours spilling →	River Trent	23	126	down 28%	100%
Stapleford-Bessell Lane WwTW Storm tank at sewage works Sewage works Stapleford Bessell Lane Company site name STAPLEFORD - BESSEL LANE STW (SSTO) EA ID / permit SVT02171 · T/61/45964/R Outlet location SK4863035850 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 50 / 400 Long-term average 25.5 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 126 hours spilling →	Tributary of River Erewash	19	126	down 62%	100%
Apollo Engineering Site CSO Overflow on sewer network Company site name RIPLEY - DERBY ROAD 209 (CSO) EA ID / permit SVT00087 · T/45/46241/O Outlet location SK4017649038 (OS grid reference) · View on Apple Maps WFD catchment Bottle Brook Catchment (trib of Derwent) (GB104028052300) 2024 spills / hours 52 / 51 Long-term average 32.7 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 125 hours spilling →	Trib of Bottle Brook	45	125	down 13%	100%
Station Road CSO Overflow on sewer network Company site name PONTESBURY - STATION ROAD (CSO) EA ID / permit SVT01808 · S/02/21987/O Outlet location SJ3981706255 (OS grid reference) · View on Apple Maps WFD catchment Rea Bk - conf Minsterley Bk to conf Pontesford Bk (GB109054049570) 2024 spills / hours 58 / 232 Long-term average 48.9 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 125 hours spilling →	Trib of Rea Brook	42	125	down 28%	96%
Ibstock Sewage Treatment Works Storm tank at sewage works Sewage works Ibstock Company site name IBSTOCK STW (SSTO) EA ID / permit SVT01201 · T/20/36246/R Outlet location SK3994709081 (OS grid reference) · View on Apple Maps WFD catchment Ibstock Brook from Source to River Sence (GB104028046700) 2024 spills / hours 63 / 623 Long-term average 51.0 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 125 hours spilling →	Ibstock Brook	19	125	down 70%	100%
Stonefield Square Overflow Overflow on sewer network Company site name STONE - STONEFIELD SQUARE (CSO) EA ID / permit SVT02214 · T/01/30076/O Outlet location SJ9022033690 (OS grid reference) · View on Apple Maps WFD catchment Trent from Tittensor to River Sow (GB104028053272) 2024 spills / hours 70 / 141 Long-term average 38.3 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 125 hours spilling →	Scotch Brook	51	125	down 27%	91%
Church Lane Combined Sewer Overflow Overflow on sewer network Company site name WEDDINGTON - CHURCH LANE (CSO) EA ID / permit SVT00543 · T/19/00771/O Outlet location SP3603693302 (OS grid reference) · View on Apple Maps WFD catchment Anker from Wem Brook to River Sence (GB104028046430) 2024 spills / hours 17 / 108 Long-term average 12.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 124 hours spilling →	River Anker	26	124	up 53%	100%
Broadway - Cheltenham Road (CSO) Overflow on sewer network EA ID / permit SVT00366 · Permit application submitted Outlet location SP0902537594 (OS grid reference) · View on Apple Maps WFD catchment Broadway-Badsey Bk - source to conf R Avon (GB109054039350) 2024 spills / hours 33 / 179 Long-term average 40.5 spills a year (monitored since 2022) 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 124 hours spilling →	Trib of Badsey Brook	39	124	up 18%	99%

Sewage treatment works

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

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