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
Castle Street/High Street Overflow on sewer network Company site name Castle Street/High Street Combined Sewer Overflow EA ID / permit AWS00207 · EPRRB3894EG Outlet location TL5352038690 (OS grid reference) · View on Apple Maps WFD catchment Slade (GB105033037580) 2024 spills / hours 55 / 31 Long-term average 33.8 spills a year (monitored since 2022) High-spill reason (company) Data collection - EDM non-representative location Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	The Slade	35	18	down 36%	100%
Cravens Lane Pumping Station Storm discharge at pumping station Company site name HABROUGH-CRAVENS LA SP EA ID / permit AWS00290 · ANNNF13489 Outlet location TA1479114060 (OS grid reference) · View on Apple Maps WFD catchment North Beck Drain (GB104029067575) 2024 spills / hours 1 / 9.8 Long-term average 2.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Western Trib of Harb'H Msh Drn	4	18	up 300%	100%
Moulton A Pumping Station Storm discharge at pumping station Company site name MOULTON A SP EA ID / permit AWS00855 · AWNNF1674/13358 Outlet location SP7713066400 (OS grid reference) · View on Apple Maps WFD catchment Malton Arm of the Brampton Branch (GB105032045410) 2024 spills / hours 4 / 32 Long-term average 3.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Moulton Brook	4	18	no change	100%
Malblethorpe George Street CSO Overflow on sewer network Company site name Mablethorpe George Street CSO EA ID / permit AWS00800 · ANNNF892 Outlet location TF5061085110 (OS grid reference) · View on Apple Maps WFD catchment Trusthorpe Pump Drain (upper end) (GB105029061640) Bathing water Mablethorpe Town 2024 spills / hours 5 / 19 Long-term average 6.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Town Drain (Culverted)	7	18	up 40%	100%
Ellington - Grafham Road Sp Storm discharge at pumping station Company site name ELLINGTON-GRAFHAM ROAD SP EA ID / permit AWS00397 · AWCNF2328 Outlet location TL1588071410 (OS grid reference) · View on Apple Maps WFD catchment Ellington Brook (Trib) (GB105033042830) 2024 spills / hours 4 / 22 Long-term average 3.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Trib Alconbury Brook	2	18	down 50%	100%
Witham STW Storm tank at sewage works Sewage works Witham EA ID / permit AWS01524 · ASETS12105 Outlet location TL8269013860 (OS grid reference) · View on Apple Maps WFD catchment Brain (GB105037041140) 2024 spills / hours 9 / 32 Long-term average 15.8 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 18 hours spilling →	Tidal River Chelmer	3	18	down 67%	100%
Holland Road CSO Overflow on sewer network Company site name FRINTON-STORM SEWAGE KIRBY C EA ID / permit AWS00608 · ASENF785/12000 Outlet location TM2175020450 (OS grid reference) · View on Apple Maps WFD catchment Holland Brook (GB105037077810) 2024 spills / hours 20 / 59 Long-term average 11.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Kirby Brook	3	18	down 85%	94%
Balsham Water Recycling Centre Storm tank at sewage works Sewage works Balsham Company site name BALSHAM STW EA ID / permit AWS00046 · ASCNF2051 Outlet location TL5734751083 (OS grid reference) · View on Apple Maps WFD catchment Bottisham Lode - Quy Water (GB105033042700) 2024 spills / hours 27 / 201 Long-term average 21.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	The Little Wilbraham River	5	17	down 81%	100%
East Barkwith-Torrington Road SPS Storm discharge at pumping station Company site name E BARKWITH-TORRINGTON RD SP EA ID / permit AWS00375 · ANNNF2680 Outlet location TF1626081480 (OS grid reference) · View on Apple Maps WFD catchment Barlings Eau (GB105030062290) 2024 spills / hours 1 / 2.3 Long-term average 1.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Trib of the Torrington Beck	2	17	up 100%	100%
Fairfield Road Storm discharge at pumping station Company site name FRAMLINGHAM-FAIRFIELD ROAD SP EA ID / permit AWS00424 · ASENF16232 Outlet location TM2861062960 (OS grid reference) · View on Apple Maps WFD catchment Ore (GB105035045970) 2024 spills / hours 28 / 172 Long-term average 28.0 spills a year (monitored since 2023) 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 17 hours spilling →	River Ore	11	17	down 61%	100%
White Notley-TPS Storm discharge at pumping station EA ID / permit AWS01567 · AW2NF/C1585 Outlet location TL7873018430 (OS grid reference) · View on Apple Maps WFD catchment Brain (GB105037041140) 2024 spills / hours 38 / 873 Long-term average 2.0 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 17 hours spilling →	River Brain Nt	2	17	down 95%	100%
Fornham WRC Storm tank at sewage works Sewage works Fornham Company site name Fornham Water Recycling Centre EA ID / permit AWS00447 · AW1NF545 Outlet location TL8417067870 (OS grid reference) · View on Apple Maps WFD catchment Lark (Abbey Gardens to Mildenhall) (GB105033043051) 2024 spills / hours 7 / 26 Long-term average 7.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing Volume & pollution Estimate from 17 hours spilling →	River Lark	3	17	down 57%	98%
Sandy - Girtford CSO Overflow on sewer network Company site name SANDY-GIRTFORD SSO EA ID / permit AWS01092 · AWCNF1630 Outlet location TL1646049140 (OS grid reference) · View on Apple Maps WFD catchment Ivel (DS Langford to Roxton) (GB105033038170) 2024 spills / hours 33 / 222 Long-term average 21.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Trib of River Ivel	6	17	down 82%	100%
Great Addington SPS Storm discharge at pumping station Company site name GREAT ADDINGTON SP EA ID / permit AWS00480 · AW5NF5256 Outlet location SP9599074680 (OS grid reference) · View on Apple Maps WFD catchment Addington Brook (GB105032045130) 2024 spills / hours 37 / 342 Long-term average 20.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Little Addington Brook	4	17	down 89%	100%
Southend - Belton Gardens PS Overflow on sewer network Company site name SOUTHEND-RIV DR/CHINCH'LA CSO EA ID / permit AWS01180 · EPR/AB3752TR Outlet location TQ9018084610 (OS grid reference) · View on Apple Maps WFD catchment THAMES LOWER (GB530603911401) 2024 spills / hours 43 / 52 Long-term average 30.0 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 17 hours spilling →	Thames Estuary	17	17	down 60%	100%
Aylsham Water Recycling Centre Storm tank at sewage works Sewage works Aylsham Company site name AYLSHAM STW EA ID / permit AWS00038 · AW4NF550 Outlet location TG2083026750 (OS grid reference) · View on Apple Maps WFD catchment Bure (Scarrow Beck to Horstead Mill) (GB105034050932) 2024 spills / hours 45 / 414 Long-term average 43.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Trib of the River Blackwtaer	6	17	down 87%	100%
Helmdon Terminal Pumping Station Storm discharge at pumping station Company site name HELMDON TPS EA ID / permit AWS00585 · AW1NF223 Outlet location SP5872043810 (OS grid reference) · View on Apple Maps WFD catchment Helmdon Brook (GB105033038230) 2024 spills / hours 26 / 291 Long-term average 12.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	trib River Tove	2	17	down 92%	100%
Mere Farm Storm discharge at pumping station Company site name GT BARTON-MERE FARM TPS EA ID / permit AWS00838 · ASCNF2458 Outlet location TL9090067100 (OS grid reference) · View on Apple Maps WFD catchment Pakenham Stream (GB105033043300) 2024 spills / hours 0 / 0.0 Long-term average 2.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Barton Mere	5	17	up from 0	100%
Wellingborough - Ise Valley TPS Storm discharge at pumping station Company site name WELLINGBOROUGH-ISE VALLEY TPS EA ID / permit AWS01460 · AWNNF2405 Outlet location SP9084068270 (OS grid reference) · View on Apple Maps WFD catchment Ise - Lower (GB105032045140) 2024 spills / hours 9 / 41 Long-term average 3.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 17 hours spilling →	Ise Brook Leading to R. Nene	4	17	down 56%	100%
Hunstanton Smugglers Lane PS Storm discharge at pumping station Company site name Hunstanton - Smugglers Lane Pumping Station EA ID / permit AWS00629 · ASENF12024 Outlet location TF6873042740 (OS grid reference) · View on Apple Maps WFD catchment River Hun (GB640523160000) Bathing water Hunstanton (Old Hunstanton) 2024 spills / hours 19 / 16 Long-term average 26.1 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 16 hours spilling →	River Hun	14	16	down 26%	100%
Cotton Valley Water Recycling Ctr Storm tank at sewage works Sewage works Cotton Valley Water Recycling Ctr Company site name COTTON VALLEY STW EA ID / permit AWS00284 · AWCNF10296 Outlet location SP8841045220 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Newport Pagnell to Roxton) (GB105033047923) 2024 spills / hours 30 / 362 Long-term average 10.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	River Great Ouse/River Ouzel	2	16	down 93%	100%
Poppyhill WRC Inlet overflow at sewage works Sewage works Poppyhill Company site name POPPYHILL STW EA ID / permit AWS01003 · AW1NF2418 Outlet location TL1838038640 (OS grid reference) · View on Apple Maps WFD catchment Ivel (DS Langford to Roxton) (GB105033038170) 2024 spills / hours 3 / 44 Long-term average 4.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 16 hours spilling →	The River Ivel	5	16	up 67%	100%
SSO at Main Road Overflow on sewer network Company site name NORTHAMPTON-DUSTON MAIN RD SSO EA ID / permit AWS01232 · AW5NF1814 Outlet location SP7257062800 (OS grid reference) · View on Apple Maps WFD catchment Brampton Branch - Lower (GB105032045390) 2024 spills / hours 69 / 260 Long-term average 49.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Dallington Brook	29	16	down 58%	100%
Kislingbury Pumping Station Storm discharge at pumping station Company site name KISLINGBURY SP EA ID / permit AWS00704 · AWNNF13462 Outlet location SP6979059930 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Whilton Branch to conf Brampton Branch (GB105032045320) 2024 spills / hours 53 / 349 Long-term average 23.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	River Nene	6	16	down 89%	100%
Colchester St Albans Road CSO Overflow on sewer network Company site name Colchester St Albans Road Combined Sewer Overflow EA ID / permit AWS00256 · ASENF19246 Outlet location TL9894025310 (OS grid reference) · View on Apple Maps WFD catchment Colne (d/s Doe's Corner) (GB105037041330) Shellfish water Colne; Pyefleet 2024 spills / hours 55 / 345 Long-term average 32.3 spills a year (monitored since 2019) Investigation Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Holland Brook (to R. Colne)	19	16	down 65%	100%
Rackheath Water Recycling Centre Storm tank at sewage works Sewage works Rackheath Company site name RACKHTH-THESPRINGS WROXRD STW EA ID / permit AWS01022 · AEENF1304 Outlet location TG2682014200 (OS grid reference) · View on Apple Maps WFD catchment Spixworth ( and Dobbs) Beck (GB105034050970) 2024 spills / hours 7 / 9.1 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 16 hours spilling →	Dobbs Beck, Trib River Bure	4	16	down 43%	100%
Colsterworth STW Storm tank at sewage works Sewage works Colsterworth EA ID / permit AWS00269 · ANNNF1047 Outlet location SK9281024740 (OS grid reference) · View on Apple Maps WFD catchment Witham - headwaters to conf Cringle Bk (GB105030051570) 2024 spills / hours 11 / 38 Long-term average 11.8 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	River Witham	20	16	up 82%	97%
Barrington Slid Lane 2 CSO Overflow on sewer network Company site name BARRINGTON-SLID LA #2 OV EA ID / permit AWS00056 · AW1NF1380 Outlet location TL3970049600 (OS grid reference) · View on Apple Maps WFD catchment Rhee (DS Wendy) (GB105033037610) 2024 spills / hours 60 / 105 Long-term average 39.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Trib River Rhee	14	16	down 77%	100%
Walsingham Way CSO Overflow on sewer network Company site name ELY-WALSINGHAM WAY OV EA ID / permit AWS01433 · AECNF10402 Outlet location TL5282080970 (OS grid reference) · View on Apple Maps WFD catchment Ely Ouse (South Level) (GB205033000070) 2024 spills / hours 19 / 16 Long-term average 16.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Trib of Relief Channel	11	16	down 42%	99%
Thrapston Terminal Pumping Station Storm discharge at pumping station Company site name Thrapston Terminal Pumping Station EA ID / permit AWS01377 · AW5NF1570 Outlet location SP9940078810 (OS grid reference) · View on Apple Maps WFD catchment Nene - Islip to tidal (GB105032050381) 2024 spills / hours 10 / 73 Long-term average 5.6 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Holland Brook	3	16	down 70%	100%
Cold Norton - Stow Road PS Storm discharge at pumping station Company site name COLD NORTON-STOW RD SP EA ID / permit AWS00267 · ASENF2637 Outlet location TL8379000010 (OS grid reference) · View on Apple Maps WFD catchment Sandon Brook (East arm) (GB105037028640) 2024 spills / hours 25 / 234 Long-term average 20.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	Tributary of the River Crouch	7	16	down 72%	100%
Braintree Water Recycling Centre Inlet overflow at sewage works Sewage works Braintree Company site name BRAINTREE STW EA ID / permit AWS00121 · ASENF12212 Outlet location TL7669021760 (OS grid reference) · View on Apple Maps WFD catchment Brain (GB105037041140) 2024 spills / hours 18 / 212 Long-term average 13.3 spills a year (monitored since 2023) Monitor below 90% Telemetry or data archiving failure / issue · Resolved - Aug 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 16 hours spilling →	The River Brain	3	16	down 83%	38%
Louth Grimsby Road Cistern CSO Overflow on sewer network Company site name LOUTH-GRIMSBY RD CISTERN SSO EA ID / permit AWS00771 · ANNNF13586 Outlet location TF3261087520 (OS grid reference) · View on Apple Maps WFD catchment Louth Canal (GB104029061990) 2024 spills / hours 6 / 4.5 Long-term average 15.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 16 hours spilling →	River Lud	3	16	down 50%	100%
Boston Queens Road CSO Overflow on sewer network Company site name Boston Queens Road Combined Sewer Overflow EA ID / permit AWS00103 · ANNNF1758 Outlet location TF3323044440 (OS grid reference) · View on Apple Maps WFD catchment Maud Foster and Fen Catchwater Drains (GB205030056465) Shellfish water West Wash 2024 spills / hours 9 / 7.8 Long-term average 4.9 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Maud Foster Drain	6	15	down 33%	100%
Stonely Sewage Pumping Station Storm discharge at pumping station Company site name HAIL WESTON-FORD END TPS EA ID / permit AWS01310 · AW1NF553 Outlet location TL1057067040 (OS grid reference) · View on Apple Maps WFD catchment Kym (and Til) (GB105033042980) 2024 spills / hours 21 / 246 Long-term average 13.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	River Kym	5	15	down 76%	100%
North Witham TPS Storm discharge at pumping station Company site name CSO and EO at North Witham TPS EA ID / permit AWS00905 · ANNNF2507 Outlet location SK9272021610 (OS grid reference) · View on Apple Maps WFD catchment Witham - headwaters to conf Cringle Bk (GB105030051570) 2024 spills / hours 9 / 127 Long-term average 6.0 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 15 hours spilling →	The River Witham	3	15	down 67%	100%
Brick Kiln Lane Pumping Station Storm discharge at pumping station Company site name HEVINGHAM-BRICKKILN LA SP EA ID / permit AWS00136 · AEENF12388 Outlet location TG1961020970 (OS grid reference) · View on Apple Maps WFD catchment Hevingham Watercourse (GB105034050870) 2024 spills / hours 13 / 46 Long-term average 10.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Tributary of R.Bure	5	15	down 62%	100%
Yardley Hastings STW Inlet overflow at sewage works Sewage works Yardley Hastings EA ID / permit AWS01549 · AWNNF13310 Outlet location SP8683057570 (OS grid reference) · View on Apple Maps WFD catchment Grendon Brook (GB105032045040) 2024 spills / hours 75 / 735 Long-term average 54.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Grendon Brook	8	15	down 89%	100%
Brandon WRC Storm tank at sewage works Sewage works Brandon Company site name BRANDON STW EA ID / permit AWS00126 · AW1NF939 Outlet location TL7754086740 (OS grid reference) · View on Apple Maps WFD catchment Little Ouse River (GB105033043400) 2024 spills / hours 0 / 0.0 Long-term average 1.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 15 hours spilling →	River Little Ouse	3	15	up from 0	100%
SSO Barleyland Basildon Overflow on sewer network Company site name BARLEYLAND SO EA ID / permit AWS01236 · AW2NFC023 Outlet location TQ6955691727 (OS grid reference) · View on Apple Maps WFD catchment Crouch (Upper) - u/s A129 (GB105037028500) 2024 spills / hours 25 / 48 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 15 hours spilling →	Upper River Crouch	9	15	down 64%	100%
Barnwell Manor Farm SPS Storm discharge at pumping station Company site name BARNWELL-MANOR FARM TPS EA ID / permit AWS00054 · AW5NF1782 Outlet location TL0480085800 (OS grid reference) · View on Apple Maps WFD catchment Barnwell Brook (GB105032045210) 2024 spills / hours 2 / 6.3 Long-term average 2.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Barnwell Brook	3	15	up 50%	100%
Soham Water Recycling Centre Storm tank at sewage works Sewage works Soham Company site name SOHAM STW EA ID / permit AWS01155 · AECNF1195 Outlet location TL5779074420 (OS grid reference) · View on Apple Maps WFD catchment Ely Ouse (South Level) (GB205033000070) 2024 spills / hours 26 / 359 Long-term average 19.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 15 hours spilling →	Soham Lode	2	15	down 92%	100%
Over Fen Road Overflow on sewer network Company site name OVER-FEN ROAD SO SSO EA ID / permit AWS00963 · AW1NF1412 Outlet location TL3805070870 (OS grid reference) · View on Apple Maps WFD catchment Old West River (GB205033043375) 2024 spills / hours 34 / 270 Long-term average 12.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Dockerel Brook	3	15	down 91%	100%
Sewers at Village Road Overflow on sewer network Company site name BROMHAM-VILLAGE ROAD SSO EA ID / permit AWS01116 · AW1NF1195 Outlet location TL0120051400 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Newport Pagnell to Roxton) (GB105033047923) 2024 spills / hours 10 / 84 Long-term average 7.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Trib River Great Ouse	4	15	down 60%	99%
Layer De-La-Haye STW Storm tank at sewage works Sewage works Layer De La Haye Company site name LAYER DE LA HAYE STW EA ID / permit AWS00717 · ASENF1120 Outlet location TL9872120511 (OS grid reference) · View on Apple Maps WFD catchment Roman River (GB105037034150) 2024 spills / hours 12 / 130 Long-term average 8.7 spills a year (monitored since 2023) 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 15 hours spilling →	Roman River Nt	3	15	down 75%	100%
Broughton Water Recycling Centre Inlet overflow at sewage works Sewage works Broughton Company site name BROUGHTON STW (NORTHANTS) EA ID / permit AWS00161 · AWNNF13597 Outlet location SP8418076430 (OS grid reference) · View on Apple Maps WFD catchment Loddington Arm (Ise) (GB105032045150) 2024 spills / hours 47 / 257 Long-term average 25.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Trib. Slade Brook	8	15	down 83%	100%
Barton-Fleetgate Terminal PS Storm discharge at pumping station Company site name BARTON-FLEETGATE TPS EA ID / permit AWS00061 · AW3TS307 Outlet location TA0292022560 (OS grid reference) · View on Apple Maps WFD catchment HUMBER MIDDLE (GB530402609202) 2024 spills / hours 37 / 29 Long-term average 35.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 15 hours spilling →	Barton Haven	17	15	down 54%	100%
South Killingholme Town Street CSO Overflow on sewer network Company site name S. Killingholme Town Street CSO EA ID / permit AWS01158 · ANNNF13926 Outlet location TA1528016180 (OS grid reference) · View on Apple Maps WFD catchment North Beck Drain (GB104029067575) 2024 spills / hours 15 / 14 Long-term average 11.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Trib of S.Killingholme Haven	7	15	down 53%	93%
Welland Road SPS Storm discharge at pumping station Company site name SPALDING-WELLAND ROAD SP EA ID / permit AWS01457 · AW5NF666 Outlet location TF2452822008 (OS grid reference) · View on Apple Maps WFD catchment Vernatt's Drain (GB205031050705) 2024 spills / hours 3 / 20 Long-term average 3.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	River Welland	4	15	up 33%	100%
Wellingborough - Hatton Park CSO #2 Overflow on sewer network Company site name WELLINGBOROUGH - HATTON PARK CSO#2 EA ID / permit AWS01458 · AWNNF13852 Outlet location SP8936067640 (OS grid reference) · View on Apple Maps WFD catchment Swanspool Brook (GB105032045070) 2024 spills / hours 14 / 21 Long-term average 9.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 15 hours spilling →	Swanspool Brook	6	15	down 57%	93%

Sewage treatment works

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

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