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

010k20k30k40kJan 2025: 32,000 hours spillingJanFeb 2025: 10,152 hours spillingFebMar 2025: 1,794 hours spillingMarApr 2025: 1,375 hours spillingAprMay 2025: 789 hours spillingMayJun 2025: 1,209 hours spillingJunJul 2025: 3,556 hours spillingJulAug 2025: 359 hours spillingAugSep 2025: 1,848 hours spillingSepOct 2025: 2,287 hours spillingOctNov 2025: 24,856 hours spillingNovDec 2025: 25,568 hours spillingDec
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.

OverflowDischarges toSpills 2025Hours 2025Spills vs 2024Monitor uptime
Long Bennington STW
Storm tank at sewage works
Sewage works
Long Bennington
Company site name
LONG BENNINGTON WRC
EA ID / permit
AWS00764 · ANNNF13040
Outlet location
SK8392045310 (OS grid reference) · View on Apple Maps
WFD catchment
Witham - conf Cringle Bk to conf Brant (GB105030056780)
2024 spills / hours
88 / 1,251
Long-term average
83.5 spills a year (monitored since 2022)
High-spill reason (company)
Not asset maintenance - Hydraulic capacity
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 485 hours spilling →
Trib River Witham 50 485 down 43% 99%
Essendine Terminal Pumping Station
Storm discharge at pumping station
Company site name
ESSENDINE TPS
EA ID / permit
AWS00414 · AW5NF5257
Outlet location
TF0506012560 (OS grid reference) · View on Apple Maps
WFD catchment
West Glen - conf West Glen trib to conf East Glen River (GB105031050770)
2024 spills / hours
46 / 889
Long-term average
34.0 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 485 hours spilling →
The West Glen 29 485 down 37% 100%
Lubenham SPS
Storm discharge at pumping station
Company site name
LUBENHAM SP
EA ID / permit
AWS00791 · AW5NF1773
Outlet location
SP7073086950 (OS grid reference) · View on Apple Maps
WFD catchment
Welland - headwaters to conf Jordan (GB105031045630)
2024 spills / hours
83 / 1,220
Long-term average
60.0 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 464 hours spilling →
River Welland 37 464 down 55% 100%
Crowland STW
Storm tank at sewage works
Sewage works
Crowland
EA ID / permit
AWS00300 · AW5NF79A
Outlet location
TF2462009220 (OS grid reference) · View on Apple Maps
WFD catchment
North Level Main Drain (GB205032050395)
2024 spills / hours
68 / 1,297
Long-term average
52.0 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 461 hours spilling →
Green Bank Drn,New S. Eau Rive 29 461 down 57% 100%
Oldhurst STW
Storm tank at sewage works
Sewage works
Oldhurst
EA ID / permit
AWS00954 · AWCNF1160
Outlet location
TL2943677772 (OS grid reference) · View on Apple Maps
WFD catchment
Bury Brook (GB105033043140)
2024 spills / hours
106 / 1,769
Long-term average
67.4 spills a year (monitored since 2021)
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 459 hours spilling →
Bury Brook Nt 35 459 down 67% 100%
Badwell Ash Water Recycling Centre
Storm tank at sewage works
Sewage works
Badwell Ash
Company site name
BADWELL ASH STW
EA ID / permit
AWS00041 · ASCNF10277
Outlet location
TL9934069970 (OS grid reference) · View on Apple Maps
WFD catchment
Stowlangtoft Stream (GB105033043340)
2024 spills / hours
67 / 1,298
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
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 436 hours spilling →
Salary Brook 37 436 down 45% 100%
Long Buckby Water Recycling Centre
Storm tank at sewage works
Sewage works
Long Buckby
Company site name
LONG BUCKBY STW
EA ID / permit
AWS00768 · AW5NF468
Outlet location
SP6129066680 (OS grid reference) · View on Apple Maps
WFD catchment
Whilton Branch - Upper (GB105032045480)
2024 spills / hours
117 / 1,828
Long-term average
82.3 spills a year (monitored since 2023)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 432 hours spilling →
Whilton Branch R.Nene 59 432 down 50% 100%
Tealby STW
Storm tank at sewage works
Sewage works
Tealby
EA ID / permit
AWS01350 · ANNNF13409
Outlet location
TF1520090350 (OS grid reference) · View on Apple Maps
WFD catchment
Rase from source to Market Rasen (GB104029062130)
2024 spills / hours
48 / 406
Long-term average
47.5 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 427 hours spilling →
River Rase 47 427 down 2% 100%
Skellingthorpe STW
Storm tank at sewage works
Sewage works
Skellingthorpe
EA ID / permit
AWS01140 · ANNNF1192
Outlet location
SK9369072650 (OS grid reference) · View on Apple Maps
WFD catchment
Skellingthorpe Main Drain (GB105030062390)
2024 spills / hours
40 / 573
Long-term average
34.0 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 420 hours spilling →
Skellingthorpe Main Drain 28 420 down 30% 100%
Peterborough - Flag Fen WRC
Storm tank at sewage works
Sewage works
Peterborough Flag Fen
Company site name
PETERBOROUGH (FLAG FEN) STW
EA ID / permit
AWS00982 · AW5NF5178
Outlet location
TL2214098130 (OS grid reference) · View on Apple Maps
WFD catchment
North Level Pumped Areas 2 and 3 (GB205032050385)
2024 spills / hours
185 / 2,470
Long-term average
105.3 spills a year (monitored since 2020)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 418 hours spilling →
Counterdrain River Nene T 31 418 down 83% 100%
Tur Langton SPS
Storm discharge at pumping station
Company site name
TUR LANGTON TPS
EA ID / permit
AWS01408 · AWNNF354
Outlet location
SP7040093370 (OS grid reference) · View on Apple Maps
WFD catchment
Langton Brook (GB105031045620)
2024 spills / hours
143 / 2,459
Long-term average
96.0 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 405 hours spilling →
Unknown trib. Langton Brook 49 405 down 66% 100%
Billinghay Water Recycling Centre
Storm tank at sewage works
Sewage works
Billinghay
Company site name
BILLINGHAY STW
EA ID / permit
AWS00091 · ANNNF13035
Outlet location
TF1626055440 (OS grid reference) · View on Apple Maps
WFD catchment
Witham - conf Catchwater Drain to conf Bain (GB205030062425)
2024 spills / hours
96 / 1,021
Long-term average
72.7 spills a year (monitored since 2023)
High-spill reason (company)
Performance - Other maintenance / capital works (e.g. jetting)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 400 hours spilling →
Billinghay Soke Dyke 48 400 down 50% 99%
Sturton by Stow STW
Storm tank at sewage works
Sewage works
Sturton By Stow
EA ID / permit
AWS01329 · ANNNF1215
Outlet location
SK8936080870 (OS grid reference) · View on Apple Maps
WFD catchment
Lower Till (GB105030062410)
2024 spills / hours
32 / 236
Long-term average
45.8 spills a year (monitored since 2021)
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 396 hours spilling →
Sturton Beck River Till Nt 49 396 up 53% 98%
Haslingfield WRC
Storm tank at sewage works
Sewage works
Haslingfield
Company site name
HASLINGFIELD-STW
EA ID / permit
AWS00569 · ASCNF1094
Outlet location
TL4247053220 (OS grid reference) · View on Apple Maps
WFD catchment
Rhee (DS Wendy) (GB105033037610)
2024 spills / hours
128 / 2,409
Long-term average
83.8 spills a year (monitored since 2020)
High-spill reason (company)
Performance - SW Infiltration
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed, Bathing Water and/or Shellfish Water investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 383 hours spilling →
River Rhee Nt 30 383 down 77% 100%
Caister- Headworks PS
Inlet overflow at sewage works
Sewage works
Caister Headworks Ps
Company site name
Caister - Pump Lane Water Recycling Centre
EA ID / permit
AWS00186 · AEECS12404
Outlet location
TG5454009790 (OS grid reference) · View on Apple Maps
WFD catchment
Norfolk East (GB650503520003)
2024 spills / hours
71 / 430
Long-term average
84.8 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 377 hours spilling →
North Sea 73 377 up 3% 100%
Elmswell Water Recycling Centre
Storm tank at sewage works
Sewage works
Elmswell
Company site name
ELMSWELL STW
EA ID / permit
AWS00402 · ASCNF1065
Outlet location
TL9785063270 (OS grid reference) · View on Apple Maps
WFD catchment
Sapiston (GB105033043280)
2024 spills / hours
32 / 276
Long-term average
50.8 spills a year (monitored since 2021)
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 375 hours spilling →
River Sapiston 38 375 up 19% 100%
East Langton STW
Storm tank at sewage works
Sewage works
East Langton
EA ID / permit
AWS00380 · AW5NF5216
Outlet location
SP7269091590 (OS grid reference) · View on Apple Maps
WFD catchment
Langton Brook (GB105031045620)
2024 spills / hours
132 / 1,202
Long-term average
98.3 spills a year (monitored since 2022)
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 368 hours spilling →
Langton Brook River Welland N 78 368 down 41% 100%
Laceby Water Recycling Centre
Storm tank at sewage works
Sewage works
Laceby
Company site name
LACEBY STW
EA ID / permit
AWS00707 · ANNNF1490
Outlet location
TA2209007150 (OS grid reference) · View on Apple Maps
WFD catchment
Laceby Beck / River Freshney Catchment (to N Sea) (GB104029067530)
2024 spills / hours
113 / 1,199
Long-term average
89.2 spills a year (monitored since 2021)
High-spill reason (company)
Performance - Other maintenance / capital works (e.g. jetting)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 366 hours spilling →
The Laceby Beck 50 366 down 56% 93%
Brant Broughton Water Recycling Ctr
Storm tank at sewage works
Sewage works
Brant Broughton Water Recycling Ctr
Company site name
BRANT BROUGHTON STW
EA ID / permit
AWS00127 · ANNNF13060
Outlet location
SK9241054220 (OS grid reference) · View on Apple Maps
WFD catchment
Brant - Lower (GB105030056770)
2024 spills / hours
87 / 1,527
Long-term average
68.5 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 362 hours spilling →
River Brant 23 362 down 74% 99%
Long Bennington-Water Lane SSO
Overflow on sewer network
Company site name
LONG BENNINGTON-WATERLANE SSO
EA ID / permit
AWS00765 · ANNNF1752
Outlet location
SK8350045610 (OS grid reference) · View on Apple Maps
WFD catchment
Witham - conf Cringle Bk to conf Brant (GB105030056780)
2024 spills / hours
27 / 240
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 360 hours spilling →
Dike Tributary of River Witham 21 360 down 22% 99%
Easton Maudit WRC
Inlet overflow at sewage works
Sewage works
Easton Maudit
Company site name
EASTON MAUDIT STW
EA ID / permit
AWS00389 · AWNNF13532
Outlet location
SP8875058690 (OS grid reference) · View on Apple Maps
WFD catchment
Grendon Brook (GB105032045040)
2024 spills / hours
46 / 613
Long-term average
53.0 spills a year (monitored since 2021)
High-spill reason (company)
Performance - Asset power failure
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 359 hours spilling →
Trib of the Grendon Brook 36 359 down 22% 99%
Winteringham Water Recycling Centre
Inlet overflow at sewage works
Sewage works
Winteringham
Company site name
Winteringham WRC
EA ID / permit
AWS01512 · AW3TS154
Outlet location
SE9473022230 (OS grid reference) · View on Apple Maps
WFD catchment
Ancholme from Bishopbridge to the Humber (GB104029067520)
2024 spills / hours
141 / 837
Long-term average
109.0 spills a year (monitored since 2024)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 353 hours spilling →
R.Humber T 77 353 down 45% 100%
Grasby STW
Storm tank at sewage works
Sewage works
Grasby
Company site name
GRASBY WRC
EA ID / permit
AWS00479 · ANNNF1077
Outlet location
TA0863004280 (OS grid reference) · View on Apple Maps
WFD catchment
N Kelsey Beck Catchment (trib of Ancholme) (GB104029061940)
2024 spills / hours
46 / 484
Long-term average
44.0 spills a year (monitored since 2022)
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 350 hours spilling →
Kettleby Beck 32 350 down 30% 100%
Swanbourne Water Recycling Centre
Storm tank at sewage works
Sewage works
Swanbourne
Company site name
SWANBOURNE STW
EA ID / permit
AWS01341 · AWCNF11010
Outlet location
SP7969027820 (OS grid reference) · View on Apple Maps
WFD catchment
Claydon Brook (GB105033030570)
2024 spills / hours
73 / 1,266
Long-term average
38.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 341 hours spilling →
Claydon Brook 23 341 down 68% 100%
SPS South Kelsey
Storm discharge at pumping station
Company site name
S KELSEY-NORTH SP
EA ID / permit
AWS01229 · AWNNF13428
Outlet location
TF0415098920 (OS grid reference) · View on Apple Maps
WFD catchment
Caistor Canal Catchment (trib of Ancholme) (GB104029061920)
2024 spills / hours
49 / 217
Long-term average
51.0 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 338 hours spilling →
The South Kelsey Drain 53 338 up 8% 100%
Manthorpe STW
Inlet overflow at sewage works
Sewage works
Manthorpe
EA ID / permit
AWS00810 · AWNNF3351/13396
Outlet location
TF0666016360 (OS grid reference) · View on Apple Maps
WFD catchment
East Glen River (GB105031055480)
2024 spills / hours
179 / 885
Long-term average
87.8 spills a year (monitored since 2022)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 335 hours spilling →
East Glen River 111 335 down 38% 100%
Immingham Water Recycling Centre
Inlet overflow at sewage works
Sewage works
Immingham
Company site name
Immingham Water Recycling Centre
EA ID / permit
AWS00636 · ANNTS13654
Outlet location
TA2141015600 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER LOWER (GB530402609201)
2024 spills / hours
82 / 368
Long-term average
96.8 spills a year (monitored since 2020)
High-spill reason (company)
Performance - Pump failure / issue
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 332 hours spilling →
The River Humber 75 332 down 9% 100%
West Halton PS
Storm discharge at pumping station
Company site name
WEST HALTON-WATER LANE SP
EA ID / permit
AWS01472 · AWNNF13454
Outlet location
SE9078020950 (OS grid reference) · View on Apple Maps
WFD catchment
Winterton Beck from Source to the Humber (GB104029067660)
2024 spills / hours
38 / 498
Long-term average
35.0 spills a year (monitored since 2024)
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 332 hours spilling →
The Halton Drain 32 332 down 16% 100%
Manea (Town Lots) STW
Storm tank at sewage works
Sewage works
Manea
Company site name
MANEA-TOWN LOTS STW
EA ID / permit
AWS00805 · AECNF11429
Outlet location
TL4850089780 (OS grid reference) · View on Apple Maps
WFD catchment
Counter Drain (Manea and Welney IDB) (GB205033000020)
2024 spills / hours
94 / 1,323
Long-term average
69.4 spills a year (monitored since 2021)
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 332 hours spilling →
Tributary of Old Bedford River 36 332 down 62% 100%
Winslow STW
Storm tank at sewage works
Sewage works
Winslow
Company site name
Winslow WRC
EA ID / permit
AWS01511 · AWCNF10286
Outlet location
SP7678026410 (OS grid reference) · View on Apple Maps
WFD catchment
Claydon Brook (GB105033030570)
2024 spills / hours
77 / 1,280
Long-term average
53.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 329 hours spilling →
Claydon Brook 29 329 down 62% 100%
Walgrave (Ex STW) Pumping Station
Storm discharge at pumping station
Company site name
Walgrave Pumping Station
EA ID / permit
AWS01431 · AWNNF13356
Outlet location
SP7970071490 (OS grid reference) · View on Apple Maps
WFD catchment
Pitsford Arm of the Brampton Branch (GB105032045470)
2024 spills / hours
148 / 2,936
Long-term average
56.8 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 320 hours spilling →
Walgrave Brook 29 320 down 80% 100%
Horncastle Sports Ground CSO
Overflow on sewer network
Company site name
HORNCASTLE-SPORTS GROUND SSO
EA ID / permit
AWS00616 · ANNNF1760
Outlet location
TF2559069220 (OS grid reference) · View on Apple Maps
WFD catchment
Bain - Lower (GB105030062450)
2024 spills / hours
40 / 435
Long-term average
76.2 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 309 hours spilling →
Old River Bain 36 309 down 10% 100%
North Ferry Water Recycling Centre
Inlet overflow at sewage works
Sewage works
North Ferry
Company site name
NORTH FERRY STW
EA ID / permit
AWS00893 · ANNTS13658
Outlet location
TA0788624500 (OS grid reference) · View on Apple Maps
WFD catchment
HUMBER MIDDLE (GB530402609202)
2024 spills / hours
66 / 795
Long-term average
49.0 spills a year (monitored since 2023)
High-spill reason (company)
Performance - Asset power failure
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 308 hours spilling →
R.Humber 32 308 down 52% 100%
Brackley-New Water Recycling Centre
Storm tank at sewage works
Sewage works
Brackley New
Company site name
BRACKLEY STW (NEW)
EA ID / permit
AWS00113 · AWCNF10455
Outlet location
SP6003035850 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse (Brackley to Buckingham) (GB105033037860)
2024 spills / hours
111 / 2,113
Long-term average
38.0 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 307 hours spilling →
River Great Ouse 27 307 down 76% 100%
Buckingham (Maids Moreton) WRC
Storm tank at sewage works
Sewage works
Buckingham
Company site name
BUCKINGHAM STW
EA ID / permit
AWS00166 · AW1NF2849
Outlet location
SP7268034950 (OS grid reference) · View on Apple Maps
WFD catchment
Ouse (Buckingham to Cosgrove) (GB105033037920)
2024 spills / hours
153 / 2,001
Long-term average
81.7 spills a year (monitored since 2023)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement ongoing
Volume & pollution
Estimate from 307 hours spilling →
Ditch Trib River Great Ouse Nt 35 307 down 77% 100%
Hundon Water Recycling Centre
Storm tank at sewage works
Sewage works
Hundon
Company site name
HUNDON STW / HUNDON-LOWER CHURCH RD TPS
EA ID / permit
AWS00628 · ASENF1291
Outlet location
TL7443048070 (OS grid reference) · View on Apple Maps
WFD catchment
Chilton Brook (GB105036040960)
2024 spills / hours
70 / 962
Long-term average
56.0 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 300 hours spilling →
Chilton Brook River Stour Nt 20 300 down 71% 100%
Tempsford Water Recycling Centre
Storm tank at sewage works
Sewage works
Tempsford
Company site name
TEMPSFORD STW
EA ID / permit
AWS01352 · AWCNF1223
Outlet location
TL1673054540 (OS grid reference) · View on Apple Maps
WFD catchment
Stone Brook (GB105033038190)
2024 spills / hours
25 / 424
Long-term average
26.0 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 295 hours spilling →
The Stone Brook (Trib Gt Ouse) 20 295 down 20% 98%
Willingham(Lincs) STW
Storm tank at sewage works
Sewage works
Willingham
Company site name
WILLINGHAM STW
EA ID / permit
AWS01504 · ANNNF1407
Outlet location
SK8795084490 (OS grid reference) · View on Apple Maps
WFD catchment
Till (Witham) (GB105030062500)
2024 spills / hours
54 / 292
Long-term average
65.5 spills a year (monitored since 2022)
High-spill reason (company)
Performance - Asset configuration (e.g. PS/rising main/storm tanks)
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
UWWTR improvement ongoing, Operational improvement ongoing
Volume & pollution
Estimate from 288 hours spilling →
River Till River Witham Nt 59 288 up 9% 100%
The Highway PS
Storm discharge at pumping station
Company site name
GREAT STAUGHTON-CAUSEWAY TPS
EA ID / permit
AWS01359 · AWCNF2819
Outlet location
TL1270064600 (OS grid reference) · View on Apple Maps
WFD catchment
Kym (GB105033043270)
2024 spills / hours
73 / 990
Long-term average
53.7 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 288 hours spilling →
River Kym 28 288 down 62% 100%
Stonham Aspal STW
Storm tank at sewage works
Sewage works
Stonham Aspal
EA ID / permit
AWS01311 · ASENF1210
Outlet location
TM1280059560 (OS grid reference) · View on Apple Maps
WFD catchment
Jordan (East Suffolk) (GB105035046170)
2024 spills / hours
86 / 1,621
Long-term average
71.3 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 287 hours spilling →
Tributary River Gipping Nt 24 287 down 72% 100%
Helmdon Water Recycling Centre
Storm tank at sewage works
Sewage works
Helmdon
Company site name
HELMDON STW
EA ID / permit
AWS00586 · AWCNF10454
Outlet location
SP5843043770 (OS grid reference) · View on Apple Maps
WFD catchment
Helmdon Brook (GB105033038230)
2024 spills / hours
99 / 1,108
Long-term average
47.8 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 286 hours spilling →
Helmdon Brook River Tove Nt 25 286 down 75% 100%
Little Staughton(N) STW
Storm tank at sewage works
Sewage works
Little Staughton
Company site name
LITTLE STAUGHTON STW
EA ID / permit
AWS00753 · AW1NF1389
Outlet location
TL1080062100 (OS grid reference) · View on Apple Maps
WFD catchment
Kym (GB105033043270)
2024 spills / hours
85 / 1,229
Long-term average
48.0 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 284 hours spilling →
Tributary River Kym Nt 22 284 down 74% 100%
Oakham WRC
Storm tank at sewage works
Sewage works
Oakham
Company site name
OAKHAM STW
EA ID / permit
AWS00947 · AW5NF5211
Outlet location
SK8727008670 (OS grid reference) · View on Apple Maps
WFD catchment
South Gwash (GB105031050480)
2024 spills / hours
42 / 395
Long-term average
37.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 284 hours spilling →
Rutland Water/Barleythorpe Bro 26 284 down 38% 99%
Foxton(Leics) STW
Storm tank at sewage works
Sewage works
Foxton
Company site name
FOXTON STW (LEICS)
EA ID / permit
AWS00450 · AW5NF758
Outlet location
SP7143090780 (OS grid reference) · View on Apple Maps
WFD catchment
Langton Brook (GB105031045620)
2024 spills / hours
84 / 1,103
Long-term average
66.7 spills a year (monitored since 2023)
High-spill reason (company)
Not Applicable - Ongoing investigation
Investigation
Env Act (SODRP) investigation ongoing, Operational investigation completed
Improvement
Operational improvement completed
Volume & pollution
Estimate from 280 hours spilling →
Foxton Brook River Welland Nt 37 280 down 56% 100%
Leighton Linslade Water Recycling C
Storm tank at sewage works
Sewage works
Leighton Linslade Water Recycling C
Company site name
LEIGHTON LINSLADE STW
EA ID / permit
AWS00721 · AWCNF608/10415
Outlet location
SP9157026450 (OS grid reference) · View on Apple Maps
WFD catchment
Ouzel US Caldecote Mill (GB105033037971)
2024 spills / hours
47 / 557
Long-term average
34.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
UWWTR improvement ongoing
Volume & pollution
Estimate from 275 hours spilling →
River Ouzel 16 275 down 66% 100%
Woburn STW (PS Only As of 01/04/90)
Storm discharge at pumping station
Company site name
WOBURN PS
EA ID / permit
AWS01529 · AWCNF1249
Outlet location
SP9420033900 (OS grid reference) · View on Apple Maps
WFD catchment
Broughton Brook (GB105033037930)
2024 spills / hours
85 / 1,460
Long-term average
50.4 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 274 hours spilling →
Crawlwy Brook River Ouzel Nt 23 274 down 73% 100%
Ashby St.Ledgers SPS
Storm discharge at pumping station
Company site name
ASHBY ST LEDGERS SP
EA ID / permit
AWS00025 · AWNNF2111
Outlet location
SP5773068470 (OS grid reference) · View on Apple Maps
WFD catchment
Welton Village Trib, Whilton branch of R. Nene (GB105032045360)
2024 spills / hours
68 / 819
Long-term average
40.8 spills a year (monitored since 2022)
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 274 hours spilling →
River Nene (Whilton Branch) 31 274 down 54% 100%
Cromer Water Recycling Centre
Inlet overflow at sewage works
Sewage works
Cromer
Company site name
Cromer STW
EA ID / permit
AWS00299 · AEECS12415
Outlet location
TG1883045510 (OS grid reference) · View on Apple Maps
WFD catchment
Norfolk East (GB650503520003)
2024 spills / hours
91 / 524
Long-term average
134.1 spills a year (monitored since 2019)
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 272 hours spilling →
The North Sea 72 272 down 21% 100%
Northend Pumping Station
Storm discharge at pumping station
Company site name
GOXHILL-NORTH END SP
EA ID / permit
AWS00918 · AWNNF13450
Outlet location
TA1058022900 (OS grid reference) · View on Apple Maps
WFD catchment
Barrow Beck (GB104029067605)
2024 spills / hours
28 / 276
Long-term average
25.7 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 266 hours spilling →
Unnamed Dyke 23 266 down 18% 100%
Brafield SSO
Storm discharge at pumping station
Company site name
BRAFIELD-LOWER END SP
EA ID / permit
AWS00119 · AW5NF2107
Outlet location
SP8220059600 (OS grid reference) · View on Apple Maps
WFD catchment
Grendon Brook (GB105032045330)
2024 spills / hours
107 / 1,448
Long-term average
70.0 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 266 hours spilling →
Unknown trib. River Nene 33 266 down 69% 99%

Sewage treatment works

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

← All water companies · Contains Environment Agency data licensed under the Open Government Licence v3.0. How to read the data.