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
Baschurch - Walford Heath SPS (EO) Storm discharge at pumping station EA ID / permit SVT02424 · Permit application submitted Outlet location SJ4492419974 (OS grid reference) · View on Apple Maps WFD catchment War Bk - source to conf R Perry (GB109054049150) 2024 spills / hours 35 / 406 Long-term average 23.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 107 hours spilling →	River Ryton	15	107	down 57%	98%
Stapleton Lane Sewage Pumping St. Storm discharge at pumping station Company site name BARWELL - STAPLETON LANE (SSO) EA ID / permit SVT02172 · T/20/35907/O Outlet location SP4362097440 (OS grid reference) · View on Apple Maps WFD catchment Stoke Golding Brook from Source to R Sence (GB104028046640) 2024 spills / hours 37 / 255 Long-term average 23.3 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 107 hours spilling →	River Tweed	17	107	down 54%	100%
Albert Village - Highfields PS (CSO) Storm discharge at pumping station EA ID / permit SVT00037 · Permit application submitted Outlet location SK3019817942 (OS grid reference) · View on Apple Maps WFD catchment Hooborough Brook from Source to River Mease (GB104028046580) 2024 spills / hours 45 / 437 Long-term average 19.2 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 106 hours spilling →	Trib Of Hooborough Brook	10	106	down 78%	100%
Freeby Sewage Treatment Works Inlet overflow at sewage works Sewage works Freeby Company site name FREEBY STW (CSO) EA ID / permit SVT00928 · T/54/45286/R Outlet location SK8066320210 (OS grid reference) · View on Apple Maps WFD catchment Freeby Brook Catchment (trib of Eye) (GB104028047580) 2024 spills / hours 132 / 568 Long-term average 109.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 105 hours spilling →	Freeby Brook	34	105	down 74%	100%
Stanton Under Bardon SPS Storm discharge at pumping station Company site name STANTON UNDER BARDON PS (CSO) EA ID / permit SVT02168 · T/56/40256/O Outlet location SK4645009770 (OS grid reference) · View on Apple Maps WFD catchment Rothley Brook Catchment (trib of Soar) (GB104028046730) 2024 spills / hours 48 / 170 Long-term average 62.8 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 105 hours spilling →	Trib of Stanton Brook	37	105	down 23%	100%
Branton Wastewater Treatment Works Storm tank at sewage works Sewage works Branton Company site name BRANTON STW (SSTO) EA ID / permit SVT00331 · T/83/45823/R Outlet location SE6408700688 (OS grid reference) · View on Apple Maps WFD catchment Torne/Three Rivers from Mother Drain to Trent (GB104028064340) 2024 spills / hours 17 / 62 Long-term average 12.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing Improvement UWWTR improvement completed Volume & pollution Estimate from 105 hours spilling →	River Torne	15	105	down 12%	97%
Various PS'S & Csos-Stoney Stanton Storm discharge at pumping station Company site name HUNCOTE - MAIN STREET (SSO) EA ID / permit SVT02406 · T/50/03632/O Outlet location SP5150097300 (OS grid reference) · View on Apple Maps WFD catchment Thurlaston Brook Catchment (trib of Soar) (GB104028046940) 2024 spills / hours 18 / 124 Long-term average 11.4 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 105 hours spilling →	River Soar Or Tribs	8	105	down 56%	94%
Ledbury Sewage Treatment Works Inlet overflow at sewage works Sewage works Ledbury Company site name LEDBURY STW (CSO) EA ID / permit SVT01337 · S/21/26211/R Outlet location SO7009237022 (OS grid reference) · View on Apple Maps WFD catchment Leadon - source to conf Preston Bk (GB109054039640) 2024 spills / hours 65 / 20 Long-term average 41.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 104 hours spilling →	River Leadon	49	104	down 25%	100%
Ravenfield Common-Braithwell Rd SPS Storm discharge at pumping station Company site name RAVENFIELD COMMON - BRAITHWELL RD (SSO) EA ID / permit SVT01868 · T/76/03427/O Outlet location SK4992093722 (OS grid reference) · View on Apple Maps WFD catchment Oldcotes Dyke Catchment (trib of Ryton) (GB104028058230) 2024 spills / hours 21 / 121 Long-term average 20.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 103 hours spilling →	Hellaby Brook	21	103	no change	99%
Opposite the Lodge CSO Overflow on sewer network Company site name DUFFIELD - TOWN STREET (THE LODGE) (CSO) EA ID / permit SVT01725 · T/44/07229/O Outlet location SK3501343067 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 35 / 104 Long-term average 49.4 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 103 hours spilling →	River Derwent	32	103	down 9%	100%
Lydney - Church Road (CSO) Overflow on sewer network EA ID / permit SVT00828 · EPRHB3991WF Outlet location SO6343002480 (OS grid reference) · View on Apple Maps WFD catchment Cannop Bk - source to R Severn Estuary (GB109054032640) 2024 spills / hours 85 / 368 Long-term average 54.9 spills a year (monitored since 2019) 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 103 hours spilling →	River Lyd	57	103	down 33%	100%
Stoney Way Combined Sewer Overflow Overflow on sewer network Company site name MATLOCK - STONEY WAY (CSO) EA ID / permit SVT02217 · T/40/12380/O Outlet location SK3007059846 (OS grid reference) · View on Apple Maps WFD catchment Bentley Brook Catchment (trib of Derwent) (GB104028052810) 2024 spills / hours 16 / 36 Long-term average 19.9 spills a year (monitored since 2017) 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 103 hours spilling →	Bentley Brook (River Derwent)	32	103	up 100%	100%
Rothley SPS Storm discharge at pumping station Company site name ROTHLEY (CSO) EA ID / permit SVT01909 · T/57/45485/O Outlet location SK5945013510 (OS grid reference) · View on Apple Maps WFD catchment Soar from Rothley Brook to Long Whatton Brook (GB104028047211) 2024 spills / hours 43 / 449 Long-term average 72.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 102 hours spilling →	River Soar	8	102	down 81%	100%
Marston Montgomery STW Storm tank at sewage works Sewage works Marston Montgomery Company site name MARSTON MONTGOMERY STW (SSTO) EA ID / permit SVT01510 · T/33/35557/R Outlet location SK1318038135 (OS grid reference) · View on Apple Maps WFD catchment Marston Brook cathment (trib of Dove) (GB104028052440) 2024 spills / hours 22 / 75 Long-term average 19.4 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 101 hours spilling →	Marston Brook	17	101	down 23%	99%
Rainworth Sewage Treatment Works Storm tank at sewage works Sewage works Rainworth Company site name RAINWORTH STW (SSTO) EA ID / permit SVT01860 · T/70/45715/R Outlet location SK5976059200 (OS grid reference) · View on Apple Maps WFD catchment Rainworth Water from Source to Gallow Hole Dyke (GB104028052940) 2024 spills / hours 27 / 166 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 101 hours spilling →	Rainworth Water	21	101	down 22%	100%
Arbor Road CSO Overflow on sewer network Company site name CROFT - ARBOR ROAD (CSO) EA ID / permit SVT00088 · T/50/12388/O Outlet location SP5180695471 (OS grid reference) · View on Apple Maps WFD catchment Soar from Soar Brook to Thurlaston Brook (GB104028042620) 2024 spills / hours 57 / 168 Long-term average 54.3 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 100 hours spilling →	Broughton Astley Brook	51	100	down 11%	99%
Burton Joyce PS Emergency Overflow Storm discharge at pumping station Company site name BURTON JOYCE - TRENT LANE PS (CSO) EA ID / permit SVT00427 · T/64/01299/O Outlet location SK6510043600 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 71 / 610 Long-term average 52.7 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 99 hours spilling →	River Trent (Non Tidal)	29	99	down 59%	98%
Shepshed Wastewater Treatment Wks Storm tank at sewage works Sewage works Shepshed Wastewater Treatment Wks Company site name SHEPSHED STW (SSTO) EA ID / permit SVT02008 · T/57/45608/R Outlet location SK4913920795 (OS grid reference) · View on Apple Maps WFD catchment Black Brook from Grace Dieu Brook to Soar (GB104028047100) 2024 spills / hours 34 / 279 Long-term average 29.0 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 99 hours spilling →	Black Brook	13	99	down 62%	99%
Rear of Highley Pen Factory CSO Overflow on sewer network Company site name HIGHLEY - MAIN ROAD (PEN FACTORY) (CSO) EA ID / permit SVT01873 · S/02/21492/O Outlet location SO7400282603 (OS grid reference) · View on Apple Maps WFD catchment Borle Bk - source to conf R Severn (GB109054044820) 2024 spills / hours 70 / 230 Long-term average 47.4 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 99 hours spilling →	Tributary of Borle Brook	42	99	down 40%	100%
Heage Sewage Treatment Works Inlet overflow at sewage works Sewage works Heage Company site name HEAGE STW – 6DWF EA ID / permit SVT01099 · 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 87 / 498 Long-term average 99.2 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 98 hours spilling →	Downmeadow Brook	13	98	down 85%	100%
Barkers Lane/ Meadow Lane SPS Storm discharge at pumping station Company site name CHILWELL - BARKERS LA/MEADOW LANE (CSO) EA ID / permit SVT00176 · T/62/40124/O Outlet location SK5307735241 (OS grid reference) · View on Apple Maps WFD catchment Trent from Soar to The Beck (GB104028053110) 2024 spills / hours 37 / 248 Long-term average 29.7 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 98 hours spilling →	River Trent	22	98	down 41%	100%
Nottingham - Hucknall Lane/Aston Drive (CSO) Overflow on sewer network EA ID / permit SVT01185 · Permit application submitted Outlet location SK5439746124 (OS grid reference) · View on Apple Maps WFD catchment Leen from Source to Day Brook (GB104028052880) 2024 spills / hours 59 / 291 Long-term average 69.6 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 98 hours spilling →	River Leen	34	98	down 42%	100%
A518 Honnington CSO Overflow on sewer network Company site name HONNINGTON ON A518 (CSO) EA ID / permit SVT00013 · S/04/20894/O Outlet location SJ7228215057 (OS grid reference) · View on Apple Maps WFD catchment Wall Bk - source to conf Pipe Strine (GB109054050130) 2024 spills / hours 34 / 92 Long-term average 65.3 spills a year (monitored since 2019) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 98 hours spilling →	Tri of River Strine	55	98	up 62%	100%
Walsall Wood Sewage Treatment Works Storm tank at sewage works Sewage works Walsall Wood Company site name WALSALL WOOD STW (SSTO) EA ID / permit SVT02431 · T/08/36224/R Outlet location SK0355703884 (OS grid reference) · View on Apple Maps WFD catchment Ford Brook from Source to River Tame (GB104028046990) 2024 spills / hours 7 / 55 Long-term average 20.4 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 97 hours spilling →	Ford Brook	19	97	up 171%	100%
Buxton Wastewater Treatment Works Inlet overflow at sewage works Sewage works Buxton Company site name BUXTON STW INLET STORM OVERFLOW (CSO) EA ID / permit SVT00447 · T/39/45680/R Outlet location SK0668272888 (OS grid reference) · View on Apple Maps WFD catchment Wye from Source to Monk's Dale (GB104028058460) 2024 spills / hours 42 / 104 Long-term average 55.8 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 No improvement action in reporting period Volume & pollution Estimate from 97 hours spilling →	River Wye	37	97	down 12%	100%
Brookhouses CSO Overflow on sewer network Company site name BROOKHOUSES - BROOKHOUSE WAY (CSO) EA ID / permit SVT00384 · T/32/35163/O Outlet location SJ9975542567 (OS grid reference) · View on Apple Maps WFD catchment Tean from Source to Cheadle Catchment (GB104028053090) 2024 spills / hours 48 / 251 Long-term average 33.4 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 97 hours spilling →	River Tean	23	97	down 52%	99%
Ilkeston (Hallam Fields) WwTW Storm tank at sewage works Sewage works Ilkeston Company site name ILKESTON - HALLAM FIELDS STW (SSTO) EA ID / permit SVT01207 · T/61/45626/R Outlet location SK4836039290 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Gilt Brook to Trent (GB104028052480) 2024 spills / hours 95 / 1,196 Long-term average 142.3 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 96 hours spilling →	River Erewash	29	96	down 69%	94%
Ashby Magna PS - Stm & Emerg O/F Storm discharge at pumping station Company site name ASHBY MAGNA - STATION ROAD (SSO) EA ID / permit SVT00122 · T/50/00802/O Outlet location SP5560090800 (OS grid reference) · View on Apple Maps WFD catchment Whetstone Brook Catchment (trib of River Soar) (GB104028046810) 2024 spills / hours 23 / 139 Long-term average 23.6 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 96 hours spilling →	Trib of Whetstone Brook	27	96	up 17%	100%
Stourport on Severn - Cheapside (CSO) Overflow on sewer network EA ID / permit SVT02730 · Unpermitted Outlet location SO8125670799 (OS grid reference) · View on Apple Maps WFD catchment Severn - conf R Stour to conf RIver Teme (GB109054049144) 2024 spills / hours – / – Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 96 hours spilling →	River Severn	17	96		99%
Kilsby Sewage Treatment Works Storm tank at sewage works Sewage works Kilsby Company site name KILSBY (STW) EA ID / permit SVT01261 · S/12/26563/R Outlet location SP5540471291 (OS grid reference) · View on Apple Maps WFD catchment Rains Bk - source to conf R Leam (GB109054044150) 2024 spills / hours 37 / 257 Long-term average 27.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 96 hours spilling →	Rains Brook	12	96	down 68%	100%
Jacksdale - Main Road (CSO) Storm discharge at pumping station EA ID / permit SVT00837 · EPRHB3898WQ Outlet location SK4637947443 (OS grid reference) · View on Apple Maps WFD catchment Nethergreen Brook Catchment (trib of Erewash) (GB104028052620) 2024 spills / hours 26 / 131 Long-term average 33.6 spills a year (monitored since 2019) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 95 hours spilling →	Tributary of River Erewash	27	95	up 4%	100%
Kirkby Mallory STW Storm tank at sewage works (with treatment) Sewage works Kirkby Mallory Company site name KIRKBY MALLORY STW (CSO) EA ID / permit SVT01295 · T/50/46001/R Outlet location SK4603000460 (OS grid reference) · View on Apple Maps WFD catchment Thurlaston Brook Catchment (trib of Soar) (GB104028046940) Treatment Reed bed 2024 spills / hours 56 / 285 Long-term average 39.6 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 95 hours spilling →	Trib of Normanton Brook	20	95	down 64%	100%
Cumberbatch Avenue CSO Overflow on sewer network Company site name GREAT CHELL - CUMBERBATCH AVENUE (CSO) EA ID / permit SVT00712 · T/01/35798/O Outlet location SJ8795353342 (OS grid reference) · View on Apple Maps WFD catchment Ford Green Brook from Source to R Trent (GB104028053380) 2024 spills / hours 47 / 107 Long-term average 55.7 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 95 hours spilling →	Tributary of Ford Green Brook	22	95	down 53%	100%
Normanton on Trent (SSO) Storm discharge at pumping station EA ID / permit SVT00391 · Permit application submitted Outlet location SK7940468625 (OS grid reference) · View on Apple Maps WFD catchment Trent from Carlton-on-Trent to Laughton Drain (GB104028058480) 2024 spills / hours 58 / 931 Long-term average 33.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 95 hours spilling →	Tributary of the River Trent	9	95	down 84%	99%
Clowne Sewage Treatment Works Storm tank at sewage works Sewage works Clowne Company site name CLOWNE (STW) INLET WORKS 3DWF EA ID / permit SVT00585 · T/73/45819/R Outlet location SK5026375421 (OS grid reference) · View on Apple Maps WFD catchment Millwood Brook Catchment (trib of Poulter) (GB104028058150) 2024 spills / hours 22 / 94 Long-term average 22.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 95 hours spilling →	Millwood Brook	18	95	down 18%	100%
Alton Sewage Treatment Works Storm tank at sewage works Sewage works Alton Company site name ALTON STW (SSTO) EA ID / permit SVT00063 · T/30/36203/R Outlet location SK0737042600 (OS grid reference) · View on Apple Maps WFD catchment Churnet from Consall to River Dove (GB104028052652) 2024 spills / hours 46 / 366 Long-term average 37.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 95 hours spilling →	River Churnet	16	95	down 65%	100%
Broadoak Sewage Pumping Station Storm discharge at pumping station Company site name BROADOAK (CSO) EA ID / permit SVT00364 · S/20/25720/O Outlet location SO6990812908 (OS grid reference) · View on Apple Maps WFD catchment SEVERN UPPER (GB530905415403) 2024 spills / hours 6 / 55 Long-term average 4.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 94 hours spilling →	River Severn	13	94	up 117%	100%
Waltham on the Wold STW & SPS Storm discharge at pumping station Company site name WYCOMB - MAIN ROAD (CSO) EA ID / permit SVT02437 · EPRYB3093DR Outlet location SK7810026500 (OS grid reference) · View on Apple Maps WFD catchment Scalford Brook Catchment (trib of Wreake) (GB104028047600) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2021) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 94 hours spilling →	River Eye + Various Brooks	6	94	up from 0	100%
Kirton in Lindsey STW Storm tank at sewage works Sewage works Kirton In Lindsey Company site name KIRTON-IN-LINDSEY STW (SSTO) EA ID / permit SVT01297 · T/80/45794/R Outlet location SK9302098460 (OS grid reference) · View on Apple Maps WFD catchment Manton Sewer Catchment (trib of Eau) (GB104028057991) 2024 spills / hours 18 / 105 Long-term average 16.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 94 hours spilling →	Tributary of River Eau	12	94	down 33%	100%
Hulland Ward STW Storm tank at sewage works Sewage works Hulland Ward Company site name HULLAND WARD STW (SSTO) EA ID / permit SVT01191 · T/43/45461/R Outlet location SK2587247657 (OS grid reference) · View on Apple Maps WFD catchment Ecclesborne Catchment (trib of Derwent) (GB104028052720) 2024 spills / hours 54 / 343 Long-term average 43.4 spills a year (monitored since 2021) Monitor below 90% Comms failure / issue · Resolved - Dec Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 93 hours spilling →	Biggin Brook/Trib Biggin Brk	20	93	down 63%	86%
Broad Green Pumping Station Storm discharge at pumping station Company site name BROADWAS - BROAD GREEN (SSO) EA ID / permit SVT00360 · S/09/55735/O Outlet location SO7679056110 (OS grid reference) · View on Apple Maps WFD catchment Teme - conf R Onny to conf R Severn (GB109054044510) 2024 spills / hours 17 / 219 Long-term average 10.8 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 93 hours spilling →	Trib of River Teme	7	93	down 59%	100%
Waltham on the Wolds STW Storm tank at sewage works Sewage works Waltham On The Wolds Company site name WALTHAM (STW) EA ID / permit SVT02439 · T/54/46202/R Outlet location SK7933025500 (OS grid reference) · View on Apple Maps WFD catchment Thorpe Brook Catchment (trib of Eye) (GB104028047590) 2024 spills / hours 53 / 523 Long-term average 40.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 92 hours spilling →	Thorpe Brook	18	92	down 66%	100%
Doncaster Road Pumping Station Storm discharge at pumping station Company site name GUNNESS - DONCASTER ROAD (SSO) EA ID / permit SVT00777 · T/81/40049/O Outlet location SE8471011080 (OS grid reference) · View on Apple Maps WFD catchment Humber estuary TRaC (GB530402609203) 2024 spills / hours 14 / 72 Long-term average 15.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 92 hours spilling →	Gunness South Drain	15	92	up 7%	100%
Snitterfield STW Storm tank at sewage works Sewage works Snitterfield Company site name SNITTERFIELD STW (SSTO) EA ID / permit SVT02086 · S/13/25980/R Outlet location SP2221660444 (OS grid reference) · View on Apple Maps WFD catchment Sherbourne Bk - source to conf R Avon (GB109054043730) 2024 spills / hours 4 / 66 Long-term average 10.5 spills a year (monitored since 2020) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 92 hours spilling →	Sherbourne Brook	19	92	up 375%	100%
Broadway Sewage Treatment Works Storm tank at sewage works Sewage works Broadway Company site name BROADWAY (STW) EA ID / permit SVT00369 · S/16/26056/R Outlet location SP0787337773 (OS grid reference) · View on Apple Maps WFD catchment Broadway-Badsey Bk - source to conf R Avon (GB109054039350) 2024 spills / hours 49 / 265 Long-term average 23.8 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement UWWTR improvement completed, Operational improvement completed Volume & pollution Estimate from 92 hours spilling →	Tributary of Badsey Brook	15	92	down 69%	100%
Harby Es, Long Clawson,Stathern SPS Storm discharge at pumping station Company site name LONG CLAWSON - HOSE LANE (CSO) EA ID / permit SVT01065 · EPRYB3092RG Outlet location SK7317027780 (OS grid reference) · View on Apple Maps WFD catchment Stroom Dyke Catchment (trib of Smite) (GB104028053030) 2024 spills / hours 43 / 336 Long-term average 33.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 92 hours spilling →	River and Canal (See Outlets)	18	92	down 58%	100%
Lichfield Sewage Treatment Works Inlet overflow at sewage works Sewage works Lichfield Company site name LICHFIELD STW (CSO) EA ID / permit SVT01358 · T/07/36033/R Outlet location SK1270712894 (OS grid reference) · View on Apple Maps WFD catchment Pyford Brook Catchment (trib of Trent) (GB104028047250) 2024 spills / hours 33 / 219 Long-term average 44.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 91 hours spilling →	Full Brook	13	91	down 61%	100%
Various PS'S & Csos-Stoney Stanton Storm discharge at pumping station Company site name CROFT - ECC QUARRY YARD (CSO) EA ID / permit SVT02407 · T/50/03632/O Outlet location SP5150095900 (OS grid reference) · View on Apple Maps WFD catchment Soar from Soar Brook to Thurlaston Brook (GB104028042620) 2024 spills / hours 47 / 328 Long-term average 26.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 91 hours spilling →	River Soar Or Tribs	18	91	down 62%	100%
Newborough Sewage Treatment Works Inlet overflow at sewage works Sewage works Newborough Company site name NEWBOROUGH STW (CSO) EA ID / permit SVT01630 · T/07/35744/R Outlet location SK1348623665 (OS grid reference) · View on Apple Maps WFD catchment Swarbourn Catcment (trib of Trent) (GB104028047400) 2024 spills / hours 61 / 712 Long-term average 43.6 spills a year (monitored since 2021) Monitor below 90% Installation set-up/design issue · Resolved - Mar Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 91 hours spilling →	River Swarbourn	15	91	down 75%	78%
Retford - Kings Park CSO Storm discharge at pumping station Company site name RETFORD - BOLHAM LANE PS (CSO) EA ID / permit SVT00098 · T/74/02547/O Outlet location SK7023381077 (OS grid reference) · View on Apple Maps WFD catchment Idle from Maun/Poulter to Tiln (GB104028058091) 2024 spills / hours 20 / 164 Long-term average 15.8 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 90 hours spilling →	Carr Dyke	10	90	down 50%	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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