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
Stoke Bruerne STW Storm tank at sewage works Sewage works Stoke Bruerne EA ID / permit AWS01304 · AW1NF183 Outlet location SP7490049720 (OS grid reference) · View on Apple Maps WFD catchment Tove (DS Greens Norton) (GB105033038180) 2024 spills / hours 179 / 1,511 Long-term average 82.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 109 hours spilling →	Tributary of the River Tove	19	109	down 89%	100%
Brigg Water Recycling Centre Storm tank at sewage works Sewage works Brigg Company site name Brigg Water Recycling Centre EA ID / permit AWS00141 · AW3NFF892 Outlet location SE9938007620 (OS grid reference) · View on Apple Maps WFD catchment Ancholme from Bishopbridge to the Humber (GB104029067520) 2024 spills / hours 9 / 32 Long-term average 34.0 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 108 hours spilling →	The Black Dyke Nt	15	108	up 67%	100%
Grimsby Pyewipe WRC and TPS Storm discharge at pumping station Company site name GRIMSBY-PYEWIPE SO TPS EA ID / permit AWS00528 · AW3TS519 Outlet location TA2632011080 (OS grid reference) · View on Apple Maps WFD catchment HUMBER LOWER (GB530402609201) Bathing water Cleethorpes 2024 spills / hours 38 / 95 Long-term average 46.3 spills a year (monitored since 2022) High-spill reason (company) Performance - Pump failure / issue Investigation Operational investigation ongoing Improvement Env Act (SODRP) improvement ongoing, Operational improvement completed Volume & pollution Estimate from 107 hours spilling →	The River Humber	34	107	down 11%	100%
Tingewick - Foul TPS Storm discharge at pumping station Company site name TINGEWICK - FOUL SP EA ID / permit AWS01386 · AWCNF11346 Outlet location SP6608032880 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Brackley to Buckingham) (GB105033037860) 2024 spills / hours 35 / 354 Long-term average 27.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 106 hours spilling →	Brain	14	106	down 60%	100%
Ness Point Pumping Station Storm discharge at pumping station Company site name LOWESTOFT-NESS POINT TPS EA ID / permit AWS00871 · ASECS12403 Outlet location TM5566093740 (OS grid reference) · View on Apple Maps WFD catchment Suffolk (GB650503520002) 2024 spills / hours 99 / 173 Long-term average 81.7 spills a year (monitored since 2023) High-spill reason (company) Performance - Pump failure / issue Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 104 hours spilling →	North Sea	56	104	down 43%	100%
Walpole No 2 PS Storm discharge at pumping station Company site name WALPOLE NO2 SP EA ID / permit AWS01574 · Permit Applied For Outlet location TM3733275290 (OS grid reference) · View on Apple Maps WFD catchment Blyth (Hevingham Hall - d/s Halesworth) (GB105035046030) 2024 spills / hours 39 / 420 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 104 hours spilling →	Blyth (Hevingham Hall - d/s Halesworth)	7	104	down 82%	100%
Northfield Est. Storm discharge at pumping station Company site name ONEHOUSE-NORTHFIELD EST TPS EA ID / permit AWS00919 · ASENF2508 Outlet location TM0260059600 (OS grid reference) · View on Apple Maps WFD catchment Haughley Watercourse (GB105035046190) 2024 spills / hours 48 / 484 Long-term average 29.5 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 103 hours spilling →	Trib Haughley Water	18	103	down 63%	100%
Benfleet Water Recycling Centre Storm tank at sewage works Sewage works Benfleet Company site name BENFLEET STW EA ID / permit AWS00079 · CSSC.4458 Outlet location TQ7700086100 (OS grid reference) · View on Apple Maps WFD catchment THAMES LOWER (GB530603911401) 2024 spills / hours 45 / 437 Long-term average 32.2 spills a year (monitored since 2020) 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 103 hours spilling →	Benfleet Creek	14	103	down 69%	100%
Paulerspury - Cuttle Mill PS Storm discharge at pumping station Company site name PAULERSPURY-CUTTLE MILL SP EA ID / permit AWS00975 · AW1NF829 Outlet location SP7185046480 (OS grid reference) · View on Apple Maps WFD catchment Tove (DS Greens Norton) (GB105033038180) 2024 spills / hours 49 / 318 Long-term average 26.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 102 hours spilling →	trib River Tove	21	102	down 57%	100%
Meadowcroft Way Storm discharge at pumping station Company site name ORWELL-MEADOWCROFT WAY SP EA ID / permit AWS00830 · AW1NF1436 Outlet location TL3620049740 (OS grid reference) · View on Apple Maps WFD catchment Tributary of Rhee (GB105033038150) 2024 spills / hours 55 / 1,041 Long-term average 33.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 101 hours spilling →	Trib River Rhee	8	101	down 85%	90%
Little Bytham - Station Road CSO Overflow on sewer network Company site name LITTLE BYTHAM-STATION RD SSO EA ID / permit AWS00745 · AW5NF1812 Outlet location TF0152017950 (OS grid reference) · View on Apple Maps WFD catchment The Tham (GB105031050650) 2024 spills / hours 147 / 3,077 Long-term average 55.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 100 hours spilling →	West Glen	13	100	down 91%	94%
Grimston Water Recycling Centre Storm tank at sewage works Sewage works Grimston Company site name GRIMSTON STW EA ID / permit AWS00532 · AECNF11353 Outlet location TF7127021000 (OS grid reference) · View on Apple Maps WFD catchment Gaywood River (GB105033047680) 2024 spills / hours 89 / 1,837 Long-term average 71.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 100 hours spilling →	Watery Lane Drain	9	100	down 90%	100%
Sawtry Pumping Station CSO/EO Storm discharge at pumping station Company site name SAWTRY-OLD NORTH ROAD TPS EA ID / permit AWS01098 · AW1NF930 Outlet location TL1770083200 (OS grid reference) · View on Apple Maps WFD catchment Middle Level (GB205033000050) 2024 spills / hours 32 / 272 Long-term average 16.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 100 hours spilling →	Trib of Black Horse Drain	9	100	down 72%	100%
Evenley STW Storm tank at sewage works Sewage works Evenley EA ID / permit AWS00415 · AWCNF2056 Outlet location SP5899034900 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Brackley to Buckingham) (GB105033037860) 2024 spills / hours 38 / 321 Long-term average 22.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 99 hours spilling →	Stream River Great Ouse Nt	12	99	down 68%	100%
Woodbridge Quayside TPS Storm discharge at pumping station Company site name Woodbridge Quayside Transfer Pumping Station EA ID / permit AWS01535 · AW4TS1403 Outlet location TM2771048950 (OS grid reference) · View on Apple Maps WFD catchment DEBEN (GB520503503900) Shellfish water Deben 2024 spills / hours 27 / 78 Long-term average 17.9 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 98 hours spilling →	River Deben	18	98	down 33%	100%
Nevada Road CSO Overflow on sewer network Company site name Nevada Road CSO, Canvey Island, Essex EA ID / permit AWS00874 · ASENF12428 Outlet location TQ8047084190 (OS grid reference) · View on Apple Maps WFD catchment THAMES LOWER (GB530603911401) 2024 spills / hours 18 / 102 Long-term average 17.0 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 97 hours spilling →	Knightswick Dyke	16	97	down 11%	100%
Gawcott Brook Storm discharge at pumping station Company site name GAWCOTT SP EA ID / permit AWS00460 · Permit Applied For Outlet location SP6730031900 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Brackley to Buckingham) (GB105033037860) 2024 spills / hours 64 / 556 Long-term average 41.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 97 hours spilling →	Gawcott Brook	18	97	down 72%	100%
Brington Water Recycling Centre Storm tank at sewage works (with treatment) Sewage works Brington Company site name BRINGTON STW EA ID / permit AWS00150 · AW5NF5228 Outlet location SP6654065760 (OS grid reference) · View on Apple Maps WFD catchment Church Brampton Arm (GB105032045380) Treatment Reed bed 2024 spills / hours 65 / 777 Long-term average 46.8 spills a year (monitored since 2022) Monitor below 90% Power failure / issue · Resolved - Oct Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 97 hours spilling →	Unnamed Trib of Brington Brook	22	97	down 66%	70%
Norwich Cedar Road CSO Overflow on sewer network Company site name Norwich Cedar Road Combined Sewer Overflow EA ID / permit AWS00936 · EPREB3296EH Outlet location TG2406707669 (OS grid reference) · View on Apple Maps WFD catchment Wensum DS Norwich (GB105034055882) 2024 spills / hours 31 / 7.5 Long-term average 26.2 spills a year (monitored since 2018) Monitor below 90% Telemetry or data archiving failure / issue · Not Applicable - Ongoing investigation Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 96 hours spilling →	The River Wensum	11	96	down 65%	19%
Belaugh Water Recycling Centre Storm tank at sewage works Sewage works Belaugh Company site name Belaugh WRC EA ID / permit AWS00074 · AW4TF351 Outlet location TG2943018370 (OS grid reference) · View on Apple Maps WFD catchment Bure (Horstead Mill to St Benet's Abbey) (GB105034050931) 2024 spills / hours 116 / 2,065 Long-term average 64.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 96 hours spilling →	River Bure - Tidal	10	96	down 91%	100%
Willow Walk PS Storm discharge at pumping station Company site name WEELEY-WILLOW WALK TPS EA ID / permit AWS01505 · AW2NFE01582 Outlet location TM1480021800 (OS grid reference) · View on Apple Maps WFD catchment Holland Brook (GB105037077810) 2024 spills / hours 4 / 43 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 95 hours spilling →	Holland Brook	22	95	up 450%	100%
Drayton Overflow on sewer network Company site name Drayton SSO EA ID / permit AWS00352 · AW5NF2117 Outlet location SP8313092010 (OS grid reference) · View on Apple Maps WFD catchment Welland - conf Langton Bk to conf Gwash (GB105031050580) 2024 spills / hours 48 / 503 Long-term average 35.0 spills a year (monitored since 2024) Monitor below 90% Power failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 95 hours spilling →	Trib River Welland	22	95	down 54%	65%
Halstead (Langley) WRC Storm tank at sewage works Sewage works Halstead Company site name HALSTEAD STW EA ID / permit AWS00553 · AW2NF524 Outlet location TL8368029670 (OS grid reference) · View on Apple Maps WFD catchment Colne (d/s Doe's Corner) (GB105037041330) 2024 spills / hours 57 / 478 Long-term average 40.0 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 95 hours spilling →	The River Colne Nt	10	95	down 82%	100%
Fritwell STW Storm tank at sewage works Sewage works Fritwell EA ID / permit AWS00455 · AW1NF2895 Outlet location SP5259028720 (OS grid reference) · View on Apple Maps WFD catchment Padbury Brook (GB105033038210) 2024 spills / hours 50 / 527 Long-term average 39.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 94 hours spilling →	Padbury Brook River Great Ouse	22	94	down 56%	100%
Kibworth STW Storm tank at sewage works Sewage works Kibworth EA ID / permit AWS00675 · AW5NF803 Outlet location SP6898092660 (OS grid reference) · View on Apple Maps WFD catchment Langton Brook (GB105031045620) 2024 spills / hours 110 / 1,420 Long-term average 74.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 93 hours spilling →	Langton Brook	12	93	down 89%	100%
SPS Stamford Rd-Ketton Storm discharge at pumping station Company site name KETTON-STAMFORD RD SP EA ID / permit AWS01230 · AW5NF1786 Outlet location SK9870005200 (OS grid reference) · View on Apple Maps WFD catchment Chater - Lower (GB105031050440) 2024 spills / hours 71 / 1,254 Long-term average 42.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 93 hours spilling →	River Chater	14	93	down 80%	100%
Gt Easton - Bridgefoot TPS Storm discharge at pumping station Company site name GT EASTON-BRIDGEFOOT TPS EA ID / permit AWS00536 · ASENF10513 Outlet location TL6029025450 (OS grid reference) · View on Apple Maps WFD catchment Chelmer (Gt. Easton - R. Can) (GB105037033950) 2024 spills / hours 16 / 194 Long-term average 14.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 93 hours spilling →	tributary River Chelmer	11	93	down 31%	100%
Braybrooke SPS Storm discharge at pumping station Company site name BRAYBROOKE TPS EA ID / permit AWS00132 · AW5NF1788 Outlet location SP7630084400 (OS grid reference) · View on Apple Maps WFD catchment Jordan (Welland) (GB105031045600) 2024 spills / hours 58 / 733 Long-term average 37.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 92 hours spilling →	River Jordan	10	92	down 83%	100%
Kings Lynn-Millfleet SO2 CSO Overflow on sewer network Company site name KINGS LYNN-MILLFLEET SO2 OV EA ID / permit AWS00694 · AW1NF1041 Outlet location TF6185019670 (OS grid reference) · View on Apple Maps WFD catchment Gaywood River (GB105033047680) 2024 spills / hours 110 / 542 Long-term average 70.8 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 92 hours spilling →	Culverted section of Gaywood R	46	92	down 58%	98%
Bungay Water Recycling Centre Storm tank at sewage works Sewage works Bungay Company site name BUNGAY STW EA ID / permit AWS00176 · ASENF242 Outlet location TM3438089270 (OS grid reference) · View on Apple Maps WFD catchment Waveney (Starston Brook - Ellingham Mill) (GB105034045902) 2024 spills / hours 19 / 108 Long-term average 19.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 92 hours spilling →	Tin River, Trib R. Waveney Nt	18	92	down 5%	99%
Kings Lynn Gaywood CSO Overflow on sewer network Company site name Kings Lynn Gaywood Combined Sewer Overflow EA ID / permit AWS00686 · AECTS11056 Outlet location TF6100021570 (OS grid reference) · View on Apple Maps WFD catchment GREAT OUSE (GB530503300300) Shellfish water South East Wash 2024 spills / hours 21 / 185 Long-term average 38.7 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 91 hours spilling →	The Tidal River Great Ouse	14	91	down 33%	100%
Kings Lynn - Gaywood Outfall 2 CSO Overflow on sewer network Company site name Kings Lynn - Gaywood Outfall 2 Combined Sewer Overflow EA ID / permit AWS00683 · AECTS11057 Outlet location TF6097021620 (OS grid reference) · View on Apple Maps WFD catchment GREAT OUSE (GB530503300300) 2024 spills / hours 21 / 184 Long-term average 37.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing, Bathing Water and/or Shellfish Water improvement ongoing Volume & pollution Estimate from 90 hours spilling →	Tidal Great River Ouse	13	90	down 38%	100%
Wymondham Water Recycling Centre Storm tank at sewage works Sewage works Wymondham Company site name WYMONDHAM STW EA ID / permit AWS01547 · AW4NF430X Outlet location TG0950002990 (OS grid reference) · View on Apple Maps WFD catchment Tiffey (GB105034051282) 2024 spills / hours 38 / 426 Long-term average 33.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 90 hours spilling →	The River Tiffey (Non-Tidal)	9	90	down 76%	100%
Ipswich-Wherstead Road PS Storm discharge at pumping station Company site name IPSWICH-WHERSTEAD RD SP EA ID / permit AWS00648 · AW4TS1431 Outlet location TM1634042430 (OS grid reference) · View on Apple Maps WFD catchment ORWELL (GB520503613601) 2024 spills / hours 7 / 4.8 Long-term average 33.7 spills a year (monitored since 2020) High-spill reason (company) Not asset maintenance - Hydraulic capacity 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 90 hours spilling →	River Orwell	47	90	up 571%	99%
Eastfield Road/A180 CSO Overflow on sewer network Company site name S Killingholme - Eastfield Rd EA ID / permit AWS00388 · ANNNF13924 Outlet location TA1571016250 (OS grid reference) · View on Apple Maps WFD catchment North Beck Drain (GB104029067575) 2024 spills / hours 21 / 69 Long-term average 25.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 90 hours spilling →	Unmd Drain Trib. Riv. Humber	19	90	down 10%	100%
West Haddon Sp Storm discharge at pumping station EA ID / permit AWS01471 · AWNNF2711 Outlet location SP6232071130 (OS grid reference) · View on Apple Maps WFD catchment Whilton Branch - Upper (GB105032045480) 2024 spills / hours 45 / 188 Long-term average 38.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 90 hours spilling →	River Nene (Whilton Branch)	30	90	down 33%	100%
Eagle Pumping Station Storm discharge at pumping station Company site name EAGLE SP EA ID / permit AWS00365 · ANNNF13427 Outlet location SK8772066710 (OS grid reference) · View on Apple Maps WFD catchment Boultham Catchwater Drain (GB105030062380) 2024 spills / hours 6 / 21 Long-term average 5.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 89 hours spilling →	Unnamed Drain	13	89	up 117%	97%
Haddenham - New Town Road PS Storm discharge at pumping station Company site name HADDENHAM-NEW TOWN RD SP EA ID / permit AWS00541 · AECNF2494 Outlet location TL4571075270 (OS grid reference) · View on Apple Maps WFD catchment Old West River (GB205033043375) 2024 spills / hours 11 / 78 Long-term average 18.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 89 hours spilling →	Tributary of the Hundred Foot	12	89	up 9%	100%
Welham Overflow on sewer network Company site name ORLINGBURY-HARROWDEN ROAD SSO EA ID / permit AWS01456 · AW5NF2033 Outlet location SP7683092600 (OS grid reference) · View on Apple Maps WFD catchment Welland - conf Langton Bk to conf Gwash (GB105031050580) 2024 spills / hours 11 / 20 Long-term average 13.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 89 hours spilling →	Unknown trib.	16	89	up 45%	100%
Kings Cliffe STW Inlet overflow at sewage works Sewage works Kings Cliffe Company site name KINGSCLIFFE STW EA ID / permit AWS00680 · AW5NF541 Outlet location TL0121097340 (OS grid reference) · View on Apple Maps WFD catchment Willow Brook (Nene) (GB105032050290) 2024 spills / hours 50 / 163 Long-term average 51.3 spills a year (monitored since 2023) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 89 hours spilling →	Willow Brook River Nene Nt	37	89	down 26%	100%
Ipswich-Cliff Quay WRC Overflow on sewer network Company site name IPSWICH-CLIFF QUAY STW (EASTERN AREA SEWER CSO) EA ID / permit AWS00646 · AEETS15987 Outlet location TM1717041490 (OS grid reference) · View on Apple Maps WFD catchment ORWELL (GB520503613601) 2024 spills / hours 59 / 163 Long-term average 43.5 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 89 hours spilling →	tidal River Orwell	28	89	down 53%	100%
Kibworth STW Inlet overflow at sewage works Sewage works Kibworth EA ID / permit AWS00676 · AW5NF803 Outlet location SP6898092660 (OS grid reference) · View on Apple Maps WFD catchment Langton Brook (GB105031045620) 2024 spills / hours 54 / 334 Long-term average 49.5 spills a year (monitored since 2024) 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 86 hours spilling →	Langton Brook	45	86	down 17%	100%
Harlaxton Water Recycling Centre Storm tank at sewage works Sewage works Harlaxton Company site name HARLAXTON STW EA ID / permit AWS00559 · ANNNF1093 Outlet location SK8915033130 (OS grid reference) · View on Apple Maps WFD catchment Mow Beck (GB105030056720) 2024 spills / hours 51 / 353 Long-term average 41.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 86 hours spilling →	Trib of Grantham Canal	10	86	down 80%	100%
SSO Wothorpe Overflow on sewer network Company site name WOTHORPE SSO EA ID / permit AWS01251 · AW5NF498 Outlet location TF0270006380 (OS grid reference) · View on Apple Maps WFD catchment Welland - conf Langton Bk to conf Gwash (GB105031050580) 2024 spills / hours 31 / 407 Long-term average 23.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 86 hours spilling →	Trib River Welland	16	86	down 48%	100%
Baker Street Pumping Station Storm discharge at pumping station Company site name GORLESTON-BAKER ST SP EA ID / permit AWS00044 · AEETS12177 Outlet location TG5294004300 (OS grid reference) · View on Apple Maps WFD catchment BURE & WAVENEY & YARE & LOTHING (GB510503410700) Bathing water Gorleston Beach 2024 spills / hours 34 / 58 Long-term average 34.7 spills a year (monitored since 2023) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 86 hours spilling →	Tidal River Yare	29	86	down 15%	100%
Little Brington SPS Storm discharge at pumping station Company site name LITTLE BRINGTON SP EA ID / permit AWS00744 · AW5NF5254 Outlet location SP6639764009 (OS grid reference) · View on Apple Maps WFD catchment Church Brampton Arm (GB105032045380) 2024 spills / hours 49 / 394 Long-term average 36.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 85 hours spilling →	Unknown trib. River Nene	23	85	down 53%	100%
CSO and EO at Woodford Overflow on sewer network Company site name WOODFORD-THE MOORINGS SP EA ID / permit AWS00307 · AWNNF2736 Outlet location SP9719076790 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Ise to Islip (GB105032050383) 2024 spills / hours 48 / 370 Long-term average 29.2 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 85 hours spilling →	The River Nene	18	85	down 63%	100%
Ford Street T.P.S. Storm discharge at pumping station Company site name EIGHT ASH GREEN-FORD ST TPS EA ID / permit AWS00444 · ASENF12416 Outlet location TL9207027130 (OS grid reference) · View on Apple Maps WFD catchment Colne (d/s Doe's Corner) (GB105037041330) 2024 spills / hours 55 / 654 Long-term average 47.8 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 85 hours spilling →	The River Colne	10	85	down 82%	99%
Mumby PS Storm discharge at pumping station Company site name MUMBY SP EA ID / permit AWS00856 · AW3NFF1203 Outlet location TF5138074070 (OS grid reference) · View on Apple Maps WFD catchment Anderby Main Drain (GB105029061730) 2024 spills / hours 32 / 274 Long-term average 22.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 84 hours spilling →	Unknown trib.	12	84	down 63%	100%
Great Dunmow STW Storm tank at sewage works Sewage works Great Dunmow EA ID / permit AWS00494 · ASENF12255 Outlet location TL6372021250 (OS grid reference) · View on Apple Maps WFD catchment Chelmer (Gt. Easton - R. Can) (GB105037033950) 2024 spills / hours 39 / 379 Long-term average 27.3 spills a year (monitored since 2022) 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 84 hours spilling →	River Chelmer	13	84	down 67%	100%

Sewage treatment works

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

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