Storm overflow register · 2025 annual return

Anglian Water storm overflows, 2025

Anglian Water reported 1,442 storm overflows in England for 2025. Together they recorded 17,322 spills over 105,806 hours, an average of 12.0 spills per overflow against 20.4 across England. That ranks 1 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 61% on 2024.

244 overflows did not spill · 38 spilled more than 60 times · 1,323 had monitors working for 90% of the year or more · 419 sewage treatment works with overflows

Hours spilling by month, 2025

Hours spilling, all Anglian Water overflows, from the start/stop records. Spills running across a month end are split between the months.

All Anglian 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
Upwood STW Storm tank at sewage works Sewage works Upwood EA ID / permit AWS01420 · AW1NF/A171 Outlet location TL2503082300 (OS grid reference) · View on Apple Maps WFD catchment Middle Level (GB205033000050) 2024 spills / hours 49 / 186 Long-term average 37.3 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 65 hours spilling →	Tributary Great Raveley Drain	16	65	down 67%	96%
Great Gransden TPS Storm discharge at pumping station EA ID / permit AWS00500 · AWCNF2754 Outlet location TL2640055820 (OS grid reference) · View on Apple Maps WFD catchment Abbotsley and Hen Brooks (GB105033043240) 2024 spills / hours 44 / 575 Long-term average 25.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 65 hours spilling →	The Gransden Brook	11	65	down 75%	100%
North Luffenham WRC Inlet overflow at sewage works Sewage works North Luffenham Company site name NORTH LUFFENHAM STW EA ID / permit AWS00898 · AWNNF1154 Outlet location SK9407002660 (OS grid reference) · View on Apple Maps WFD catchment Chater - Upper (GB105031050430) 2024 spills / hours 14 / 67 Long-term average 15.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 65 hours spilling →	River Chater	25	65	up 79%	100%
Ipswich-Cliff Quay WRC Overflow on sewer network Company site name IPSWICH-CLIFF QUAY STW (SOUTH EASTERN AREA SEWER CSO) EA ID / permit AWS00647 · AEETS15988 Outlet location TM1717041490 (OS grid reference) · View on Apple Maps WFD catchment ORWELL (GB520503613601) 2024 spills / hours – / – Long-term average 45.0 spills a year (monitored since 2024) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 65 hours spilling →	tidal River Orwell	41	65		100%
Twywell Sp Storm discharge at pumping station EA ID / permit AWS01580 · AW5NF681 Outlet location SP9538078120 (OS grid reference) · View on Apple Maps WFD catchment Alledge Brook (GB105032045180) 2024 spills / hours – / – Long-term average 13.0 spills a year (monitored since 2025) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	A tributary of the Alledge Brook	13	64		100%
Barnetby - Fernery La Terminal PS Storm discharge at pumping station Company site name BARNETBY-FERNERY LA TPS EA ID / permit AWS00052 · AW3NFF763 Outlet location TA0549009870 (OS grid reference) · View on Apple Maps WFD catchment Kettleby Beck (GB104029067510) 2024 spills / hours 30 / 62 Long-term average 23.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	Skegger Beck	26	64	down 13%	100%
Station Rd Overflow on sewer network Company site name SUTTON-STATION RD OV EA ID / permit AWS01280 · AECNF10400 Outlet location TL4522078930 (OS grid reference) · View on Apple Maps WFD catchment Old West River (GB205033043375) 2024 spills / hours 118 / 71 Long-term average 80.5 spills a year (monitored since 2024) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	unnamed trib South Fen Drain	43	64	down 64%	100%
Northall Pumping Station Storm discharge at pumping station Company site name NORTHALL SP EA ID / permit AWS00906 · AWCNF11508 Outlet location SP9507020290 (OS grid reference) · View on Apple Maps WFD catchment Ouzel (US Clipstone Brook) (GB105033030520) 2024 spills / hours 42 / 460 Long-term average 22.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	Tributary of the River Ouzel	13	64	down 69%	100%
Wing STW Inlet overflow at sewage works Sewage works Wing EA ID / permit AWS01510 · AW5NF764 Outlet location SK8903003530 (OS grid reference) · View on Apple Maps WFD catchment Chater - Upper (GB105031050430) 2024 spills / hours 41 / 181 Long-term average 35.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 64 hours spilling →	River Chater	29	64	down 29%	100%
Colchester Water Recycling Centre Storm tank at sewage works Sewage works Colchester Company site name Colchester Water Recycling Centre EA ID / permit AWS00257 · ASETS1046 Outlet location TM0225023610 (OS grid reference) · View on Apple Maps WFD catchment COLNE (GB520503713800) Shellfish water Colne; Pyefleet 2024 spills / hours 52 / 329 Long-term average 80.3 spills a year (monitored since 2019) Investigation Bathing Water and/or Shellfish Water investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 63 hours spilling →	Colne Estuary	20	63	down 62%	100%
Wellingborough-Market Street CSO Overflow on sewer network Company site name Wellingborough -Market Street Combined Sewer Overflow EA ID / permit AWS01462 · AW5NF1804 Outlet location SP8958067740 (OS grid reference) · View on Apple Maps WFD catchment Swanspool Brook (GB105032045070) 2024 spills / hours 31 / 319 Long-term average 9.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 63 hours spilling →	Swanspool Brook	21	63	down 32%	98%
Holbrook STW Inlet overflow at sewage works Sewage works Holbrook EA ID / permit AWS00604 · AW2NF185 Outlet location TM1682035870 (OS grid reference) · View on Apple Maps WFD catchment STOUR (ESSEX) (GB520503613602) 2024 spills / hours 38 / 83 Long-term average 33.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 63 hours spilling →	Trib Holbrook Stream	28	63	down 26%	100%
Swaffham STW Storm tank at sewage works Sewage works Swaffham EA ID / permit AWS01340 · AW1NF1077 Outlet location TF8578004920 (OS grid reference) · View on Apple Maps WFD catchment Wissey - Upper (GB105033047890) 2024 spills / hours 55 / 167 Long-term average 46.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	The River Wissey	27	62	down 51%	100%
SO at Shenfield Sewer Overflow on sewer network Company site name SHENFIELD SEWER SSO EA ID / permit AWS01149 · ASENF10462 Outlet location TQ6390096140 (OS grid reference) · View on Apple Maps WFD catchment Wid (Doddinghurst Brook - Shenfield STW) (GB105037028680) 2024 spills / hours 16 / 42 Long-term average 13.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	River Wid	11	62	down 31%	92%
Elton WRC Storm tank at sewage works Sewage works Elton Company site name ELTON STW EA ID / permit AWS00406 · AWNNF13141 Outlet location TL0854094620 (OS grid reference) · View on Apple Maps WFD catchment Nene - Islip to tidal (GB105032050381) 2024 spills / hours 28 / 551 Long-term average 6.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 62 hours spilling →	River Nene	5	62	down 82%	99%
Denton TPS (Northants) Storm discharge at pumping station EA ID / permit AWS00327 · AWNNF2249 Outlet location SP8413058420 (OS grid reference) · View on Apple Maps WFD catchment Castle Ashby Arm (Grendon Brook) (GB105032045030) 2024 spills / hours 35 / 280 Long-term average 24.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Denton Brook	13	61	down 63%	100%
Ely (New) Water Recycling Centre Storm tank at sewage works Sewage works Ely Company site name Ely New Water Recycling Centre EA ID / permit AWS00408 · AWCNF11352 Outlet location TL5423078170 (OS grid reference) · View on Apple Maps WFD catchment Ely Ouse (South Level) (GB205033000070) 2024 spills / hours 45 / 555 Long-term average 91.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Ouse River (Ely)	6	61	down 87%	100%
Desborough-Rectory Field CSO Overflow on sewer network Company site name DESBOROUGH-RECTORY FIELD SSO EA ID / permit AWS00334 · AW5NF1888 Outlet location SP8050082680 (OS grid reference) · View on Apple Maps WFD catchment Ise - Upper (GB105032045200) 2024 spills / hours 45 / 226 Long-term average 23.7 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	River Ise	20	61	down 56%	75%
Pytchley SSO Overflow on sewer network Company site name PYTCHLEY-ORLINGBURY RD SSO EA ID / permit AWS01019 · AW5NF1893 Outlet location SP8600074590 (OS grid reference) · View on Apple Maps WFD catchment Pytchley Brook (GB105032045110) 2024 spills / hours 78 / 330 Long-term average 53.0 spills a year (monitored since 2024) Monitor below 90% Power failure / issue · Resolved - Aug Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Trib Pytchley Brook	28	61	down 64%	63%
Medbourne STW Inlet overflow at sewage works Sewage works Medbourne Company site name MEDBOURNE WRC EA ID / permit AWS00832 · AW5NF416 Outlet location SP8000092700 (OS grid reference) · View on Apple Maps WFD catchment Medbourne Brook (GB105031050520) 2024 spills / hours 18 / 116 Long-term average 14.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Medbourne Brook River Welland	11	61	down 39%	99%
Broomstick Corner CSO Overflow on sewer network Company site name CHEVELEY-BROOMSTICK CNR OV EA ID / permit AWS00160 · AW1NF1385 Outlet location TL6848061740 (OS grid reference) · View on Apple Maps WFD catchment Soham Lode (GB105033042860) 2024 spills / hours 16 / 86 Long-term average 17.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 61 hours spilling →	Trb Newmarket NO2 Public Drain	18	61	up 13%	100%
Clipston STW Storm tank at sewage works (with treatment) Sewage works Clipston Company site name Cliptson WRC EA ID / permit AWS00247 · AWNNF1269 Outlet location SP7182081730 (OS grid reference) · View on Apple Maps WFD catchment Ise - Upper (GB105032045200) Treatment Reed bed 2024 spills / hours 0 / 0.0 Long-term average 8.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 60 hours spilling →	River Ise Nt	26	60	up from 0	100%
Warmington STW Storm discharge at pumping station Company site name Warmington Water Recycling Centre EA ID / permit AWS01441 · AW5NF96 Outlet location TL0720091360 (OS grid reference) · View on Apple Maps WFD catchment Nene - Islip to tidal (GB105032050381) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 60 hours spilling →	Warmington Brook River Nene N	6	60	up from 0	100%
Hatcliffe SPS Storm discharge at pumping station Company site name HATCLIFFE SP EA ID / permit AWS00570 · ANNNF2364 Outlet location TA2151000910 (OS grid reference) · View on Apple Maps WFD catchment Waithe Beck lower catchment (to Tetney Lock) (GB104029062100) 2024 spills / hours 10 / 61 Long-term average 7.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 60 hours spilling →	Waithe Beck	5	60	down 50%	100%
Louth Brackenborough Road CSO Overflow on sewer network Company site name LOUTH-BRACKENBOROUGH RD SSO EA ID / permit AWS00770 · ANNNF13592 Outlet location TF3337088050 (OS grid reference) · View on Apple Maps WFD catchment Louth Canal (GB104029061990) 2024 spills / hours 28 / 38 Long-term average 13.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 60 hours spilling →	Trib of River Lud	19	60	down 32%	97%
Great Wratting Sp Storm discharge at pumping station Company site name GT WRATTING-THE STREET SP EA ID / permit AWS00514 · ASENF2668 Outlet location TL6910048300 (OS grid reference) · View on Apple Maps WFD catchment Stour (u/s Wixoe) (GB105036040980) 2024 spills / hours 80 / 932 Long-term average 52.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 59 hours spilling →	Tributary of the River Stour	9	59	down 89%	100%
Morcott CSO Overflow on sewer network Company site name MORCOTT SSO EA ID / permit AWS00854 · AWNNF13867 Outlet location SK9276000890 (OS grid reference) · View on Apple Maps WFD catchment Morcott Brook (GB105031050420) 2024 spills / hours 30 / 45 Long-term average 30.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 59 hours spilling →	Unnamed Backwater of River Ise	30	59	no change	99%
Melbourn Water Recycling Centre Storm tank at sewage works Sewage works Melbourn Company site name MELBOURN STW EA ID / permit AWS00833 · AW1NF934 Outlet location TL3790045800 (OS grid reference) · View on Apple Maps WFD catchment Mel (GB105033038060) 2024 spills / hours 119 / 976 Long-term average 61.8 spills a year (monitored since 2020) High-spill reason (company) Performance - Asset configuration (e.g. PS/rising main/storm tanks) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 59 hours spilling →	Mel Brook Leading to R Rhee	37	59	down 69%	99%
Canwick Water Recycling Centre Storm tank at sewage works Sewage works Canwick Company site name CANWICK STW EA ID / permit AWS00199 · ANNNF2073 Outlet location SK9981070880 (OS grid reference) · View on Apple Maps WFD catchment Witham - conf Catchwater Drain to conf Bain (GB205030062425) 2024 spills / hours 29 / 393 Long-term average 16.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 58 hours spilling →	The South Delph	9	58	down 69%	100%
Tar Works Road SPS Storm discharge at pumping station Company site name GT YARMOUTH-TAR WORKS RD NEWSM EA ID / permit AWS01349 · AEETS12170 Outlet location TG5222009050 (OS grid reference) · View on Apple Maps WFD catchment BURE & WAVENEY & YARE & LOTHING (GB510503410700) 2024 spills / hours 58 / 100 Long-term average 54.0 spills a year (monitored since 2023) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 58 hours spilling →	Tidal River Bure	36	58	down 38%	100%
St Mary'S Rd Overflow on sewer network Company site name RAMSEY-ST MARYS RD SSO EA ID / permit AWS01257 · AW1NF1055 Outlet location TL2845085660 (OS grid reference) · View on Apple Maps WFD catchment Middle Level (GB205033000050) 2024 spills / hours 0 / 0.0 Long-term average 4.5 spills a year (monitored since 2024) Monitor below 90% Installation set-up/design issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 58 hours spilling →	Ramsey High Lode	9	58	up from 0	51%
Ness Point Pumping Station Storm discharge at pumping station Company site name LOWESTOFT-SEA OUTFALL EA ID / permit AWS00870 · ASECS12402 Outlet location TM5566093740 (OS grid reference) · View on Apple Maps WFD catchment Suffolk (GB650503520002) 2024 spills / hours 1 / 0.3 Long-term average 2.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	North Sea	3	57	up 200%	100%
Downham Market - Railway CSO Overflow on sewer network Company site name DOWNHAM MARKET-RAILWAY SSO EA ID / permit AWS00347 · AECNF10443 Outlet location TF6014003290 (OS grid reference) · View on Apple Maps WFD catchment Relief Channel (GB205033047665) 2024 spills / hours 39 / 31 Long-term average 21.5 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	Flood Relief Channel Sur W Sew	32	57	down 18%	100%
Mentmore STW Storm tank at sewage works Sewage works Mentmore EA ID / permit AWS00836 · AWCNF11055 Outlet location SP9109019620 (OS grid reference) · View on Apple Maps WFD catchment Ouzel (US Clipstone Brook) (GB105033030520) 2024 spills / hours 25 / 332 Long-term average 18.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	unnamed tributary River Ouzel	17	57	down 32%	100%
Market Harborough South CSO Overflow on sewer network Company site name Market Harborough South Combined Sewer Overflow EA ID / permit AWS00814 · EPRRB3094WT Outlet location SP7410087270 (OS grid reference) · View on Apple Maps WFD catchment Welland - headwaters to conf Jordan (GB105031045630) 2024 spills / hours 30 / 164 Long-term average 24.8 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 57 hours spilling →	River Welland	14	57	down 53%	99%
Unity Close SSO Overflow on sewer network Company site name WOLLASTON-UNITY CLOSE SSO EA ID / permit AWS01415 · AW5NF2029 Outlet location SP9008063180 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Brampton Branch to conf Ise (GB105032045050) 2024 spills / hours 82 / 634 Long-term average 55.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 56 hours spilling →	Trib River Nene	28	56	down 66%	98%
Ivinghoe STW Storm tank at sewage works Sewage works Ivinghoe EA ID / permit AWS00660 · AW1NF543 Outlet location SP9420017610 (OS grid reference) · View on Apple Maps WFD catchment Whistle Brook (GB105033030490) 2024 spills / hours 135 / 1,276 Long-term average 84.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 56 hours spilling →	Whistle Brook, River Ouzel	27	56	down 80%	99%
Kings Lynn-Millfleet SO3 CSO Overflow on sewer network Company site name KINGS LYNN-MILLFLEET SO3 OV EA ID / permit AWS00695 · AW1NF1042 Outlet location TF6197019700 (OS grid reference) · View on Apple Maps WFD catchment Gaywood River (GB105033047680) 2024 spills / hours 55 / 260 Long-term average 26.8 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity Monitor below 90% Installation set-up/design issue · Resolved - Nov Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 56 hours spilling →	Culverted section of Gaywood R	32	56	down 42%	19%
Brampton Water Recycling Centre Storm tank at sewage works Sewage works Brampton Company site name Brampton WRC EA ID / permit AWS00125 · AWCNF1025 Outlet location TL2182069960 (OS grid reference) · View on Apple Maps WFD catchment Alconbury and Brampton Brooks (GB105033042790) 2024 spills / hours 60 / 1,042 Long-term average 23.3 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 56 hours spilling →	Brampton Brook River Great Ous	7	56	down 88%	100%
Chedburgh STW Storm tank at sewage works Sewage works Chedburgh EA ID / permit AWS00217 · ASCNF1041 Outlet location TL7959058830 (OS grid reference) · View on Apple Maps WFD catchment Linnet (GB105033042950) 2024 spills / hours 46 / 365 Long-term average 27.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 55 hours spilling →	Tributary of River Linnet	6	55	down 87%	98%
Northampton Lower Hester Street CSO Overflow on sewer network Company site name NORTHAMPTON-LOWER HESTER ST OV EA ID / permit AWS00911 · EPRJB3297AZ Outlet location SP7488061180 (OS grid reference) · View on Apple Maps WFD catchment Brampton Branch - Lower (GB105032045390) 2024 spills / hours – / – Long-term average 22.8 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 55 hours spilling →	River Nene	30	55		97%
Kessingland WRC Storm tank at sewage works Sewage works Kessingland Company site name KESSINGLAND-MARSH LN STW EA ID / permit AWS00670 · AW4NF358X Outlet location TM5326085580 (OS grid reference) · View on Apple Maps WFD catchment Lothingland Hundred (GB105035046251) 2024 spills / hours 20 / 258 Long-term average 19.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 55 hours spilling →	Kessingland Hundred River	7	55	down 65%	100%
Jericho Lane East Halton Storm discharge at pumping station Company site name EAST HALTON - JERICHO LANE SP EA ID / permit AWS00665 · ANNNF2409 Outlet location TA1354020400 (OS grid reference) · View on Apple Maps WFD catchment Skitter Beck / East Halton Beck (GB104029067655) 2024 spills / hours 6 / 49 Long-term average 6.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 55 hours spilling →	unnamed dyke East Halton Beck	7	55	up 17%	100%
Dullingham Water Recycling Centre Storm tank at sewage works Sewage works Dullingham Company site name DULLINGHAM STW EA ID / permit AWS00358 · AECNF10273 Outlet location TL6215058780 (OS grid reference) · View on Apple Maps WFD catchment Soham Lode (GB105033042860) 2024 spills / hours 48 / 360 Long-term average 33.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 55 hours spilling →	Newmarket No.1 Public Drain	10	55	down 79%	100%
Tiptree Water Recycling Centre Storm tank at sewage works Sewage works Tiptree Company site name TIPTREE STW EA ID / permit AWS01388 · AW2NFE04662 Outlet location TL9067016640 (OS grid reference) · View on Apple Maps WFD catchment Layer Brook (GB105037034130) 2024 spills / hours 26 / 232 Long-term average 30.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Virley Brook Trib Salcottcreek	6	54	down 77%	100%
Stanford Le Hope STW, Stanford Le H Storm discharge at pumping station Company site name STANFORD LE HOPE BROADHOPE PS EA ID / permit AWS01275 · WR1665 Outlet location TQ6867081620 (OS grid reference) · View on Apple Maps WFD catchment THAMES LOWER (GB530603911401) 2024 spills / hours 32 / 147 Long-term average 26.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Stanford Creek: Tidal R.Thames	21	54	down 34%	100%
Broadway Terminal PS Storm discharge at pumping station Company site name WITCHFORD-THE BROADWAY SP EA ID / permit AWS00155 · AECNF764/11023 Outlet location TL5064078800 (OS grid reference) · View on Apple Maps WFD catchment Old Bedford River / River Delph (inc The Hundred Foot Washes) (GB205033000060) 2024 spills / hours 38 / 231 Long-term average 27.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Grunty Fen Drain	12	54	down 68%	100%
Glapthorne TPS Storm discharge at pumping station Company site name GLAPTHORN TPS EA ID / permit AWS00467 · AWNNF2322 Outlet location TL0270090500 (OS grid reference) · View on Apple Maps WFD catchment Glapthorn Brook (GB105032045250) 2024 spills / hours 24 / 374 Long-term average 14.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Benefield Brook	5	54	down 79%	100%
Tannery Road Storm discharge at pumping station Company site name COMBS-TANNERY RD SP EA ID / permit AWS01348 · ASENF2646 Outlet location TM0424056110 (OS grid reference) · View on Apple Maps WFD catchment Rattlesden River (d/s Gt. Finborough) (GB105035046110) 2024 spills / hours 8 / 63 Long-term average 8.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Combs Beck to Rattlesden River	9	54	up 13%	100%
Weedon Road CSO Overflow on sewer network Company site name HARPOLE-WEEDON RD SSO EA ID / permit AWS01452 · AW5NF1878 Outlet location SP6951060150 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Whilton Branch to conf Brampton Branch (GB105032045320) 2024 spills / hours 47 / 157 Long-term average 49.8 spills a year (monitored since 2020) High-spill reason (company) Not Applicable - Ongoing investigation Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 54 hours spilling →	Trib River Nene	37	54	down 21%	100%

Sewage treatment works

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

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