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
Bagthorpe (CSO) Overflow on sewer network EA ID / permit SVT00869 · EPRTB3795VS Outlet location SK4490051000 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Source to Nethergreen Brook (GB104028052740) 2024 spills / hours 31 / 152 Long-term average 31.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	River Erewash	23	71	down 26%	100%
Alveley Sewage Treatment Works Storm tank at sewage works Sewage works Alveley Company site name ALVELEY STW (SSTO) EA ID / permit SVT00068 · S/02/56058/R Outlet location SO7595685073 (OS grid reference) · View on Apple Maps WFD catchment Hampton Loade Bk - source to conf R Severn (GB109054044680) 2024 spills / hours 28 / 154 Long-term average 26.4 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	Lakehouse Dingle Brook	19	71	down 32%	100%
Mill Lane Pumping Station Storm discharge at pumping station Company site name HALFORD - MILL LANE (CSO) EA ID / permit SVT01565 · S/14/12195/O Outlet location SP2577045470 (OS grid reference) · View on Apple Maps WFD catchment Stour - conf Back Bk to conf R Avon (GB109054039921) 2024 spills / hours 22 / 190 Long-term average 11.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 71 hours spilling →	River Stour (Avon)	11	71	down 50%	98%
Harworth Sewage Treatment Works Storm tank at sewage works Sewage works Harworth Company site name HARWORTH STW (SSTO) EA ID / permit SVT01079 · T/83/45790/R Outlet location SK6111692053 (OS grid reference) · View on Apple Maps WFD catchment Torne from Ruddle to St Catherine's Well Stream (GB104028058400) 2024 spills / hours 25 / 177 Long-term average 30.2 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 71 hours spilling →	Harworth Sewage Dyke	9	71	down 64%	100%
Hinton on the Green STW Storm tank at sewage works Sewage works Hinton On The Green Company site name HINTON-ON-THE-GREEN (STW) SSTO EA ID / permit SVT01151 · S/18/25984/R Outlet location SP0237240550 (OS grid reference) · View on Apple Maps WFD catchment Isbourne - source to conf R Avon (GB109054039631) 2024 spills / hours 100 / 591 Long-term average 102.8 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 71 hours spilling →	River Isbourne	15	71	down 85%	99%
Bramcote - Anker Bridge SPS Storm discharge at pumping station Company site name BRAMCOTE - ANKER BRIDGE (CSO) EA ID / permit SVT00083 · T/19/36340/O Outlet location SP4147088788 (OS grid reference) · View on Apple Maps WFD catchment Anker - source to Wem Bk (GB104028042440) 2024 spills / hours 27 / 237 Long-term average 19.3 spills a year (monitored since 2020) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 71 hours spilling →	River Anker	10	71	down 63%	98%
Fenny Bentley (CSO) Storm discharge at pumping station EA ID / permit SVT00890 · Permit application submitted Outlet location SK1763049850 (OS grid reference) · View on Apple Maps WFD catchment Bentley Brook Catch (trib of Dove) (GB104028052750) 2024 spills / hours 6 / 35 Long-term average 7.0 spills a year (monitored since 2022) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	Bentley Brook	10	70	up 67%	99%
Darley Dale - Four Ends SPS Storm discharge at pumping station Company site name DARLEY DALE - FOUR LANE ENDS (SSO) EA ID / permit SVT00737 · EPRQB3394VZ Outlet location SK2756462132 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 20 / 75 Long-term average 24.2 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 70 hours spilling →	River Derwent	16	70	down 20%	100%
Dale Rd South-Off Old Hackney Lane Overflow on sewer network Company site name DARLEY DALE - DALE ROAD SOUTH (CSO) EA ID / permit SVT00720 · T/40/12431/O Outlet location SK2828961701 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Wye to Amber (GB104028052390) 2024 spills / hours 24 / 67 Long-term average 27.2 spills a year (monitored since 2017) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 70 hours spilling →	River Derwent	25	70	up 4%	100%
Glen Parva - Southfield Close (SSO) Storm discharge at pumping station EA ID / permit SVT00704 · EPRKB3596VE Outlet location SP5630099300 (OS grid reference) · View on Apple Maps WFD catchment Soar from Sence to Rothley Brook (GB104028047030) 2024 spills / hours 30 / 299 Long-term average 21.4 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	River Sence (Soar)	10	70	down 67%	98%
Ashwell Terminal Pumping Station Storm discharge at pumping station Company site name ASHWELL PS (CSO) EA ID / permit SVT00133 · T/54/40223/O Outlet location SK8641913991 (OS grid reference) · View on Apple Maps WFD catchment Langham Brook from Source to Whissendine Brook (GB104028047520) 2024 spills / hours 17 / 213 Long-term average 16.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 70 hours spilling →	Tributary of Whissendine Brook	9	70	down 47%	100%
Hospital Lane Storm Overflow Overflow on sewer network Company site name SWADLINCOTE - BOARDMAN IND EST (CSO) EA ID / permit SVT01179 · T/24/30139/O Outlet location SK2827019460 (OS grid reference) · View on Apple Maps WFD catchment Darklands Brook Catchment (trib of Trent) (GB104028047310) 2024 spills / hours 14 / 18 Long-term average 28.9 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	Darklands Brook	28	70	up 100%	100%
Elmhurst Sewage Treatment Works Inlet overflow at sewage works Sewage works Elmhurst Company site name NASH LANE - ELMHURST STW (CSO) EA ID / permit SVT00861 · T/07/35741/R Outlet location SK1159112248 (OS grid reference) · View on Apple Maps WFD catchment Pyford Brook Catchment (trib of Trent) (GB104028047250) 2024 spills / hours 90 / 1,277 Long-term average 78.8 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 70 hours spilling →	Tributary of Full Brook	13	70	down 86%	98%
Ashby Folville STW Storm discharge at pumping station Company site name BARSBY - MAIN STREET (CSO) EA ID / permit SVT00187 · T/55/03479/O Outlet location SK6970011200 (OS grid reference) · View on Apple Maps WFD catchment Queniborough Brook Catchment (trib of Wreake) (GB104028047450) 2024 spills / hours 31 / 198 Long-term average 21.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Barsby Brook	18	69	down 42%	100%
Bargate Road CSO Overflow on sewer network Company site name BELPER - BARGATE ROAD (CSO) EA ID / permit SVT00175 · T/42/12283/O Outlet location SK3542546501 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 1 / 1.5 Long-term average 10.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Trib of the River Derwent	12	69	up 1100%	100%
Ratcliffe Culey - Main Road CSO Storm discharge at pumping station Company site name RATCLIFFE CULEY - MAIN ROAD (CSO) EA ID / permit SVT01867 · T/20/21463/O Outlet location SP3267699879 (OS grid reference) · View on Apple Maps WFD catchment Stoke Golding Brook from Source to R Sence (GB104028046640) 2024 spills / hours 23 / 178 Long-term average 15.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Sence Brook	9	69	down 61%	99%
Whissendine Sewage Pumping Station Storm discharge at pumping station Company site name WHISSENDINE 'B' - MAIN STREET TPS (CSO) EA ID / permit SVT02685 · T/54/45935/O Outlet location SK8293114265 (OS grid reference) · View on Apple Maps WFD catchment Whissendine Brook Catchment (trib of Langham Brook) (GB104028047460) 2024 spills / hours 44 / 426 Long-term average 32.5 spills a year (monitored since 2022) Investigation UWWTR investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Whissendine Brook	17	69	down 61%	100%
Long Marston TPS (CSO) Storm discharge at pumping station EA ID / permit SVT01405 · EPRLB3799ET Outlet location SP1607048780 (OS grid reference) · View on Apple Maps WFD catchment Marchfont Bk - source to conf R Avon (GB109054039490) 2024 spills / hours 0 / 0.0 Long-term average 2.0 spills a year (monitored since 2020) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Gran Brook	8	69	up from 0	92%
Harborough Magna STW Inlet overflow at sewage works Sewage works Harborough Magna Company site name HARBOROUGH MAGNA STW (CSO) EA ID / permit SVT01058 · S/10/26277/R Outlet location SP4748078340 (OS grid reference) · View on Apple Maps WFD catchment Avon - ClaycotonYelvertoft Bk to conf R Sowe (GB109054043920) 2024 spills / hours 42 / 114 Long-term average 112.0 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 69 hours spilling →	Little Lawford Brook	31	69	down 26%	100%
Blackminster WwTW Storm tank at sewage works Sewage works Blackminster Company site name BLACKMINSTER (STW) EA ID / permit SVT00285 · S/16/26290/R Outlet location SP0665744611 (OS grid reference) · View on Apple Maps WFD catchment Broadway-Badsey Bk - source to conf R Avon (GB109054039350) 2024 spills / hours 66 / 1,055 Long-term average 30.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 69 hours spilling →	Broadway Brook	6	69	down 91%	100%
Mapperley - Marshall Rd/Hallam Rd (CSO) Overflow on sewer network EA ID / permit SVT02683 · Unpermitted Outlet location SK5940542401 (OS grid reference) · View on Apple Maps WFD catchment Ouse Dyke Catchment (trib of Trent) (GB104028053260) 2024 spills / hours 46 / 73 Long-term average 46.0 spills a year (monitored since 2025) High-spill reason (company) Data collection - EDM non-representative location Investigation UWWTR investigation completed, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 69 hours spilling →	Ouse Dyke	46	69	no change	100%
Cannock Sewage Treatement Works Storm tank at sewage works Sewage works Cannock Sewage Treatement Works Company site name CANNOCK STW (SSTO) EA ID / permit SVT00471 · T/03/36222/R Outlet location SJ9746708837 (OS grid reference) · View on Apple Maps WFD catchment Saredon Brook from Source to River Penk (GB104028046740) 2024 spills / hours 34 / 226 Long-term average 21.0 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 68 hours spilling →	Saredon Brook, Ridings Brook	9	68	down 74%	100%
Amy Street PS /Storm Sett Tanks Storm discharge at pumping station Company site name BRAUNSTONE - AMY STREET (SSO) EA ID / permit SVT00077 · T/52/00460/O Outlet location SK5640001400 (OS grid reference) · View on Apple Maps WFD catchment Soar from Sence to Rothley Brook (GB104028047030) 2024 spills / hours 52 / 693 Long-term average 27.8 spills a year (monitored since 2022) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 68 hours spilling →	River Biam (Tributary)	9	68	down 83%	100%
Grendon Sewage Treatment Works Storm tank at sewage works Sewage works Grendon Company site name GRENDON STW (SSTO) EA ID / permit SVT01012 · T/21/36278/R Outlet location SP2756299706 (OS grid reference) · View on Apple Maps WFD catchment Anker from River Sence to River Tame (GB104028046460) 2024 spills / hours 49 / 224 Long-term average 30.2 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 67 hours spilling →	Penmire Brook	19	67	down 61%	100%
Moreton Paddox STW Inlet overflow at sewage works Sewage works Moreton Paddox Company site name MORETON PADDOX (CSO) EA ID / permit SVT01586 · S/13/25818/R Outlet location SP3056954005 (OS grid reference) · View on Apple Maps WFD catchment Avon (Wark) conf R Leam to Tramway Br, Stratford (GB109054044402) 2024 spills / hours 98 / 751 Long-term average 73.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 67 hours spilling →	Tributary of River Avon	24	67	down 76%	100%
CSO at Barrow Proctors Park Rd SPS Storm discharge at pumping station Company site name BARROW - PROCTORS PARK ROAD (SSO) EA ID / permit SVT02404 · EPRTB3054GE Outlet location SK5728217258 (OS grid reference) · View on Apple Maps WFD catchment Soar from Rothley Brook to Long Whatton Brook (GB104028047211) 2024 spills / hours 41 / 403 Long-term average 29.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 66 hours spilling →	River Soar - Tributary	17	66	down 59%	100%
Abbey Road - Evesham SPS Storm discharge at pumping station Company site name EVESHAM - ABBEY ROAD (CSO) EA ID / permit SVT00019 · S/17/23105/O Outlet location SP0332643122 (OS grid reference) · View on Apple Maps WFD catchment Avon conf Workman Br, Evesham to conf R Severn (GB109054044403) 2024 spills / hours 35 / 154 Long-term average 24.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 66 hours spilling →	River Avon	10	66	down 71%	99%
Various CSO'S-Melton Mowbray Area Overflow on sewer network Company site name MELTON - LEICESTER BRIDGE O/L F (CSO) EA ID / permit SVT02396 · T/55/03724/O Outlet location SK7510018900 (OS grid reference) · View on Apple Maps WFD catchment Eye / Wreake from Langham Brook to Soar (GB104028047550) 2024 spills / hours 23 / 139 Long-term average 17.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 66 hours spilling →	River Wreake (Eye) Trib	6	66	down 74%	98%
Bascote Sewage Treatment Works Inlet overflow at sewage works Sewage works Bascote Company site name BASCOTE STW (CSO) EA ID / permit SVT00193 · S/12/25831/R Outlet location SP4062063970 (OS grid reference) · View on Apple Maps WFD catchment Itchen - conf R Stowe to conf R Leam (GB109054044110) 2024 spills / hours 2 / 21 Long-term average 5.6 spills a year (monitored since 2021) Investigation UWWTR investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 66 hours spilling →	Tributary of River Itchen	12	66	up 500%	99%
Cordy Lane Storm Overflow Overflow on sewer network Company site name BRINSLEY - CORDY LANE 2 (CSO) EA ID / permit SVT00634 · T/61/21122/O Outlet location SK4675049570 (OS grid reference) · View on Apple Maps WFD catchment Nethergreen Brook Catchment (trib of Erewash) (GB104028052620) 2024 spills / hours 20 / 57 Long-term average 12.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 66 hours spilling →	Brinsley Brook	33	66	up 65%	100%
Heage - Sotshole (SSO) Storm discharge at pumping station EA ID / permit SVT02100 · Permit application submitted Outlet location SK3721449010 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Amber to Bottle Brook (GB104028052310) 2024 spills / hours 36 / 135 Long-term average 37.4 spills a year (monitored since 2021) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 65 hours spilling →	Coppice Brook	26	65	down 28%	100%
New Road CSO Overflow on sewer network Company site name SOUTH RUBERY - NEW ROAD (CSO) EA ID / permit SVT02111 · T/09/36126/O Outlet location SO9909377398 (OS grid reference) · View on Apple Maps WFD catchment Rea source to Bourn Brook (GB104028042510) 2024 spills / hours 66 / 191 Long-term average 58.3 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 65 hours spilling →	Callow Brook	37	65	down 44%	100%
King Edward Street CSO Overflow on sewer network Company site name ASHBOURNE - OFF KING EDWARD ST (CSO) EA ID / permit SVT01267 · NPSWQD003289 Outlet location SK1742546083 (OS grid reference) · View on Apple Maps WFD catchment Henmore Brook Catch (trib of R Dove) (GB104028052700) 2024 spills / hours 24 / 75 Long-term average 17.3 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 65 hours spilling →	Henmore Brook	21	65	down 13%	100%
Shelt Hill Pumping Station Storm discharge at pumping station Company site name WOODBOROUGH - SHELT HILL (CSO) EA ID / permit SVT01999 · T/64/46349/O Outlet location SK6420048060 (OS grid reference) · View on Apple Maps WFD catchment Dover Beck Catchment (trib of Trent) (GB104028053370) 2024 spills / hours 41 / 807 Long-term average 28.5 spills a year (monitored since 2020) Investigation UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	Unnamed Trib of the Dover Beck	6	64	down 85%	100%
Osmaston Pumping Station Storm discharge at pumping station Company site name OSMASTON - CHURCH LANE (SSO) EA ID / permit SVT01734 · T/34/30188/O Outlet location SK2022044100 (OS grid reference) · View on Apple Maps WFD catchment Hilton Bk (trib of R Dove) (GB104028052870) 2024 spills / hours 19 / 138 Long-term average 19.7 spills a year (monitored since 2020) Investigation UWWTR investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	Trib of Shirley Brook	16	64	down 16%	100%
Smithfield Market Car Park CSO Overflow on sewer network Company site name OSWESTRY - SMITHFIELD MARKET CARPK (CSO) EA ID / permit SVT02072 · S/01/55699/O Outlet location SJ2997728380 (OS grid reference) · View on Apple Maps WFD catchment Oswestry Bk (GB109054050010) 2024 spills / hours 42 / 118 Long-term average 37.2 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 64 hours spilling →	Oswestry Brook	35	64	down 17%	100%
Ibstock Sewage Treatment Works Inlet overflow at sewage works Sewage works Ibstock Company site name IBSTOCK - OFF HINCKLEY ROAD (CSO) EA ID / permit SVT01200 · 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 41 / 113 Long-term average 37.6 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation UWWTR investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	Ibstock Brook	32	64	down 22%	100%
Radford Road CSO Overflow on sewer network Company site name ALVECHURCH - RADFORD ROAD (CSO) EA ID / permit SVT01852 · S/15/21079/O Outlet location SP0297072653 (OS grid reference) · View on Apple Maps WFD catchment Arrow - source to Spernall Hall Fm, Studley (GB109054043890) 2024 spills / hours 44 / 103 Long-term average 37.3 spills a year (monitored since 2019) 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 64 hours spilling →	River Arrow	31	64	down 30%	100%
Carlton - Cavendish Road (CSO) Overflow on sewer network EA ID / permit SVT00480 · EPRJB3392NA Outlet location SK6220441934 (OS grid reference) · View on Apple Maps WFD catchment Ouse Dyke Catchment (trib of Trent) (GB104028053260) 2024 spills / hours 40 / 44 Long-term average 43.0 spills a year (monitored since 2021) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 64 hours spilling →	Ouse Dyke	44	64	up 10%	100%
Coxmoor Road Sewage Pumping Station Storm discharge at pumping station Company site name SUTTON IN ASHFIELD - COXMOOR ROAD TPS (CSO) EA ID / permit SVT00668 · T/70/08948/O Outlet location SK5106759065 (OS grid reference) · View on Apple Maps WFD catchment Maun from Source to Vicar Water (GB104028052960) 2024 spills / hours 14 / 23 Long-term average 14.3 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 64 hours spilling →	River Maun	20	64	up 43%	100%
Cakemore Rd Combined Sewer Overflow Overflow on sewer network Company site name BLACKHEATH - CAKEMORE ROAD (CSO) EA ID / permit SVT00449 · T/08/36011/O Outlet location SO9816886642 (OS grid reference) · View on Apple Maps WFD catchment Tame (Oldbury Arm) - source to conf R Tame (Wton Arm) (GB104028042601) 2024 spills / hours 123 / 312 Long-term average 23.5 spills a year (monitored since 2020) Monitor below 90% Installation set-up/design issue · Resolved - Jun Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 63 hours spilling →	York Road Brook	17	63	down 86%	58%
Rushbury (STW) Storm tank at sewage works Sewage works Rushbury EA ID / permit SVT01929 · S/09/55964/R Outlet location SO5149091680 (OS grid reference) · View on Apple Maps WFD catchment Byne Bk - source to conf Quinny Bk (GB109054044370) 2024 spills / hours 115 / 914 Long-term average 60.0 spills a year (monitored since 2021) Investigation UWWTR investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 63 hours spilling →	Lakehouse Brook	20	63	down 83%	100%
Doseley SPS Storm discharge at pumping station Company site name DOSELEY - HOLYWELL LANE (CSO) EA ID / permit SVT00785 · S/02/55806/O Outlet location SJ6784005800 (OS grid reference) · View on Apple Maps WFD catchment Lyde Bk - source to conf R Severn (GB109054049530) Bathing water River Severn at Ironbridge 2024 spills / hours 37 / 331 Long-term average 18.0 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 63 hours spilling →	Burroughs Bank Brook	11	63	down 70%	100%
Glenfield/Kirby Muxloe PS/Stm/SWS Overflow on sewer network Company site name GLENFIELD - STAMFORD STREET (CSO) EA ID / permit SVT00958 · EPRKB3596AA Outlet location SK5230005100 (OS grid reference) · View on Apple Maps WFD catchment Rothley Brook Catchment (trib of Soar) (GB104028046730) 2024 spills / hours 45 / 28 Long-term average 89.3 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 63 hours spilling →	Glenfield/Braunstone/K/Mux Br	28	63	down 38%	97%
Ashby - Nottingham Road SPS Storm discharge at pumping station Company site name ASHBY - NOTTINGHAM ROAD (SSO) EA ID / permit SVT01686 · T/23/08875/O Outlet location SK3672117101 (OS grid reference) · View on Apple Maps WFD catchment Gilwiskaw Brook from Source to River Mease (GB104028046590) 2024 spills / hours 5 / 62 Long-term average 1.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	Tributary of Gilwiskaw Brook	4	62	down 20%	97%
Newbold Avenue CSO Overflow on sewer network Company site name BORROWASH - NEWBOLD AVENUE (CSO) EA ID / permit SVT01626 · T/48/45655/O Outlet location SK4216134061 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Bottle Brook to Trent (GB104028053240) 2024 spills / hours 28 / 114 Long-term average 33.7 spills a year (monitored since 2019) Investigation UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 62 hours spilling →	Ock Brook	21	62	down 25%	100%
Uttoxeter Spath Sewage PS Storm discharge at pumping station Company site name SPATH - ASHBOURNE ROAD (SSO) EA ID / permit SVT02381 · T/32/07881/O Outlet location SK0880034880 (OS grid reference) · View on Apple Maps WFD catchment Tean from Cheadle Catchment to River Dove (GB104028052450) 2024 spills / hours 12 / 39 Long-term average 9.2 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	River Tean	12	62	no change	100%
Langley Mill - Station Road CSO Overflow on sewer network Company site name LANGLEY MILL - STATION ROAD 208 (CSO) EA ID / permit SVT01317 · T/61/12267/O Outlet location SK4523747132 (OS grid reference) · View on Apple Maps WFD catchment Erewash from Nethergreen Brook to Gilt Brook (GB104028052511) 2024 spills / hours 33 / 51 Long-term average 42.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 62 hours spilling →	River Erewash	28	62	down 15%	100%
Battleflat - West Lane SPS Storm discharge at pumping station Company site name BATTLEFLAT - WEST LANE (SSO) EA ID / permit SVT00205 · T/20/01553/O Outlet location SK4526911395 (OS grid reference) · View on Apple Maps WFD catchment Sence from Source to Ibstock Brook (GB104028046750) 2024 spills / hours 2 / 7.3 Long-term average 10.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, UWWTR investigation completed, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	Tributary of River Sence	9	62	up 350%	100%
Shrewsbury Monkmoor STW Inlet overflow at sewage works Sewage works Shrewsbury Monkmoor Company site name MONKMOOR STW (CSO) EA ID / permit SVT02038 · S/02/56373/R Outlet location SJ5204513263 (OS grid reference) · View on Apple Maps WFD catchment Severn - Sundorne Bk to conf M Wenlock-Farley Bk (GB109054049141) 2024 spills / hours 33 / 71 Long-term average 29.6 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 61 hours spilling →	River Severn	19	61	down 42%	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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