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
Earls Colne St Andrews Church CSO
Overflow on sewer network
Company site name
Earls Colne St Andrews Church Combined Sewer Overflow
EA ID / permit
AWS00371 · AW2NFE03265
Outlet location
TL8633028930 (OS grid reference) · View on Apple Maps
WFD catchment
Colne (d/s Doe's Corner) (GB105037041330)
2024 spills / hours
8 / 2.8
Long-term average
5.8 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 1.0 hours spilling →
Tributary of River Colne 3 1.0 down 63% 94%
Southend- Riory Crescent CSO
Overflow on sewer network
Company site name
SOUTHEND-PRIORY CRESCENT SSO
EA ID / permit
AWS01193 · AW2NFE05183
Outlet location
TQ8785087680 (OS grid reference) · View on Apple Maps
WFD catchment
Prittle Brook (GB105037028730)
2024 spills / hours
0 / 0.0
Long-term average
1.2 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 1.0 hours spilling →
Prittle Brook 2 1.0 up from 0 100%
Reepham Water Recycling Centre
Storm tank at sewage works
Sewage works
Reepham
Company site name
REEPHAM STW (NORFOLK)
EA ID / permit
AWS01043 · AEENF1305
Outlet location
TG1045022570 (OS grid reference) · View on Apple Maps
WFD catchment
Blackwater Drain (Wensum) (GB105034051120)
2024 spills / hours
5 / 1.3
Long-term average
4.2 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
The Blackwater Drain 1 1.0 down 80% 100%
Kings Lynn - Ferry Street CSO
Overflow on sewer network
Company site name
Kings Lynn - Ferry Street Combined Sewer Overflow
EA ID / permit
AWS00681 · AECTS477/10312
Outlet location
TF6148020470 (OS grid reference) · View on Apple Maps
WFD catchment
Gaywood River (GB105033047680)
2024 spills / hours
61 / 112
Long-term average
16.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Tidal River Great Ouse 2 1.0 down 97% 100%
Earsham Street CSO
Overflow on sewer network
Company site name
BUNGAY-EARSHAM STREET SSO
EA ID / permit
AWS00373 · AW4NF1774
Outlet location
TM3336089750 (OS grid reference) · View on Apple Maps
WFD catchment
Waveney (Starston Brook - Ellingham Mill) (GB105034045902)
2024 spills / hours
2 / 0.5
Long-term average
17.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
River Waveney 4 1.0 up 100% 98%
Buxton - Coltishall Road TPS
Storm discharge at pumping station
Company site name
BUXTON-COLTISHALL RD TPS
EA ID / permit
AWS00184 · AEENF2225
Outlet location
TG2340022530 (OS grid reference) · View on Apple Maps
WFD catchment
Hevingham Watercourse (GB105034050870)
2024 spills / hours
0 / 0.0
Long-term average
4.3 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Idb Trib River Bure 2 1.0 up from 0 99%
Runwell TPS
Storm discharge at pumping station
Company site name
RUNWELL-TPS
EA ID / permit
AWS01074 · AW2NFE03883
Outlet location
TQ7623094280 (OS grid reference) · View on Apple Maps
WFD catchment
Crouch (d/s Wickford) (GB105037028550)
2024 spills / hours
0 / 0.0
Long-term average
0.4 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Trib River Crouch 2 1.0 up from 0 99%
Castle Pt Hi Road/Southview Rd CSO
Overflow on sewer network
Company site name
Castle Pt High Road/Southview Road CSO
EA ID / permit
AWS00206 · EPRNB3199AR
Outlet location
TQ7719087090 (OS grid reference) · View on Apple Maps
WFD catchment
THAMES LOWER (GB530603911401)
2024 spills / hours
10 / 8.0
Long-term average
2.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Common Watercourse NO7 1 1.0 down 90% 93%
Kings Lynn Water Lane CSO
Overflow on sewer network
Company site name
Kings Lynn - Water Lane Combined Sewer Overflow
EA ID / permit
AWS00691 · EPRNB3291WL
Outlet location
TF6148020470 (OS grid reference) · View on Apple Maps
WFD catchment
GREAT OUSE (GB530503300300)
2024 spills / hours
3 / 1.0
Long-term average
5.5 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Tidal River Great Ouse 3 1.0 no change 97%
Saracens Head/Mount Street CSO
Overflow on sewer network
Company site name
DISS-SARACENS HD MOUNT ST OV
EA ID / permit
AWS01095 · AEENF10175
Outlet location
TM1191079410 (OS grid reference) · View on Apple Maps
WFD catchment
Waveney (u/s Frenze Beck) (GB105034045820)
2024 spills / hours
6 / 2.3
Long-term average
4.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
unnamed tributary River Wavene 4 1.0 down 33% 99%
Wells - Freeman St CSO
Overflow on sewer network
Company site name
WELLS-FREEMAN ST OV
EA ID / permit
AWS01463 · AEENF12015
Outlet location
TF9119043820 (OS grid reference) · View on Apple Maps
WFD catchment
STIFFKEY & GLAVEN (GB520503403600)
2024 spills / hours
4 / 1.8
Long-term average
4.6 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
unnamed marsh dyke North Sea 3 1.0 down 25% 100%
Yeovil Road Combined Sewer Overflow
Overflow on sewer network
Company site name
Yeovil Road Combined Sewer Overflow
EA ID / permit
AWS01552 · EPRMB3495DR
Outlet location
TM5388092820 (OS grid reference) · View on Apple Maps
WFD catchment
Waveney (Ellingham Mill - Burgh St. Peter) (GB105034045903)
2024 spills / hours
4 / 1.0
Long-term average
3.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 1.0 hours spilling →
Inner Harbour (Tidal) 4 1.0 no change 97%
Boston Norfolk Place CSO
Overflow on sewer network
Company site name
Boston Norfolk Place Combined Sewer Overflow
EA ID / permit
AWS00102 · ANNTS13731
Outlet location
TF3241044490 (OS grid reference) · View on Apple Maps
WFD catchment
WITHAM (GB530503000100)
Shellfish water
West Wash
2024 spills / hours
5 / 4.7
Long-term average
26.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.9 hours spilling →
The Haven 3 0.9 down 40% 100%
Oulton Broad-Holly Road Terminal PS
Storm discharge at pumping station
Company site name
Oulton Broad-Holly Road Terminal Pumping Station
EA ID / permit
AWS00956 · AW4TS12088
Outlet location
TM5213092710 (OS grid reference) · View on Apple Maps
WFD catchment
Waveney (Ellingham Mill - Burgh St. Peter) (GB105034045903)
2024 spills / hours
4 / 0.8
Long-term average
9.7 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.9 hours spilling →
Lake Lothing 9 0.9 up 125% 100%
Jaywick Clacton 23 Park Square CSO
Overflow on sewer network
Company site name
Jaywick - Clacton 23 Park Square Combined Sewer Overflow
EA ID / permit
AWS00663 · ASENF3333/12237
Outlet location
TM1465013690 (OS grid reference) · View on Apple Maps
WFD catchment
Essex (GB650503520001)
Bathing water
Jaywick
2024 spills / hours
13 / 44
Long-term average
13.1 spills a year (monitored since 2019)
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.9 hours spilling →
Tributary of the North Sea 2 0.9 down 85% 100%
Colchester-Rowhedge Albion St. CSO
Overflow on sewer network
Company site name
Colchester - Rowhedge Albion Street Combined Sewer Overflow
EA ID / permit
AWS00264 · ASETS15689
Outlet location
TM0320021580 (OS grid reference) · View on Apple Maps
WFD catchment
COLNE (GB520503713800)
Shellfish water
Colne
2024 spills / hours
4 / 0.7
Long-term average
4.7 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 0.8 hours spilling →
River Colne (Tidal) 4 0.8 no change 96%
Southwold Marlborough Rd CSO
Overflow on sewer network
Company site name
Southwold Marlborough Road Combined Sewer Overflow
EA ID / permit
AWS01203 · AW4NF1768
Outlet location
TM5086076910 (OS grid reference) · View on Apple Maps
WFD catchment
BLYTH (S) (GB510503503700)
2024 spills / hours
147 / 19
Long-term average
51.1 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Buss Creek 13 0.8 down 91% 97%
Northampton Bedford Road CSO
Overflow on sewer network
Company site name
NORTHAMPTON-BEDFORD ROAD SSO
EA ID / permit
AWS00908 · EPRJB3297WF
Outlet location
SP7613059980 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Brampton Branch to conf Ise (GB105032045050)
2024 spills / hours
22 / 14
Long-term average
12.0 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
River Nene 7 0.8 down 68% 100%
East Haddon STW
Storm tank at sewage works
Sewage works
East Haddon
EA ID / permit
AWS00377 · AWNNF13400
Outlet location
SP6724068490 (OS grid reference) · View on Apple Maps
WFD catchment
Ravensthopre arm of Spratton Brook (GB105032045490)
2024 spills / hours
13 / 34
Long-term average
5.0 spills a year (monitored since 2022)
Monitor below 90%
Power failure / issue · Resolved - Nov
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
ditch tributary Brampton Brach 1 0.8 down 92% 77%
Norwich Angel Road CSO
Overflow on sewer network
Company site name
Norwich Angel Road Combined Sewer Overflow
EA ID / permit
AWS00934 · EPREB3297AK
Outlet location
TG2253309507 (OS grid reference) · View on Apple Maps
WFD catchment
Wensum DS Norwich (GB105034055882)
2024 spills / hours
30 / 102
Long-term average
16.7 spills a year (monitored since 2018)
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 0.8 hours spilling →
The River Wensum 7 0.8 down 77% 83%
Sudbury the Croft CSO
Overflow on sewer network
Company site name
Sudbury The Croft CSO
EA ID / permit
AWS01333 · ASENF1729
Outlet location
TL8699041630 (OS grid reference) · View on Apple Maps
WFD catchment
Stour (Wixoe - Lamarsh) (GB105036040941)
Bathing water
Friars Meadow, River Stour
2024 spills / hours
16 / 4.8
Long-term average
17.6 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 0.8 hours spilling →
River Stour 5 0.8 down 69% 100%
Crawford Rd and Church Street
Overflow on sewer network
Company site name
BURTON LATIMER CHURCH LANE SSO2
EA ID / permit
AWS00291 · AW5NF516
Outlet location
SP9030074800 (OS grid reference) · View on Apple Maps
WFD catchment
Ise - Lower (GB105032045140)
2024 spills / hours
12 / 59
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 0.8 hours spilling →
Unknown 2 0.8 down 83% 100%
Sandy - High Street CSO
Overflow on sewer network
Company site name
SANDY-HIGH STREET SSO
EA ID / permit
AWS01093 · AWCNF1684
Outlet location
TL1752049010 (OS grid reference) · View on Apple Maps
WFD catchment
Ivel (DS Langford to Roxton) (GB105033038170)
2024 spills / hours
10 / 5.8
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 0.8 hours spilling →
River Ivel 2 0.8 down 80% 100%
Brewers Green PS
Storm discharge at pumping station
Company site name
ROYDON-BREWERS GREEN SP (DISS)
EA ID / permit
AWS00135 · AEENF3549/12346
Outlet location
TM1036080840 (OS grid reference) · View on Apple Maps
WFD catchment
Frenze Beck (GB105034045840)
2024 spills / hours
31 / 484
Long-term average
16.0 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Trib of River Frenze 1 0.8 down 97% 100%
Chatham Green Pumping Station
Storm discharge at pumping station
Company site name
LT WALTHAM-CHATHAM GN SP
EA ID / permit
AWS00214 · ASENF2200
Outlet location
TL7183015710 (OS grid reference) · View on Apple Maps
WFD catchment
Ter (GB105037033940)
2024 spills / hours
15 / 147
Long-term average
4.2 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Trib Straw Brook 1 0.8 down 93% 100%
Spratton TPS
Storm discharge at pumping station
EA ID / permit
AWS01225 · AWNNF2605
Outlet location
SP7244070310 (OS grid reference) · View on Apple Maps
WFD catchment
Holdenby Arm of Spratton Brook (GB105032045440)
2024 spills / hours
2 / 19
Long-term average
2.8 spills a year (monitored since 2021)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Trib of R.Nene Brixworth Brnch 1 0.8 down 50% 100%
Fakenham Norwich Road CSO
Overflow on sewer network
Company site name
FAKENHAM-NORWICH ROAD OV
EA ID / permit
AWS00426 · AEENF12045
Outlet location
TF9215029270 (OS grid reference) · View on Apple Maps
WFD catchment
Wensum US Norwich (GB105034055881)
2024 spills / hours
10 / 3.3
Long-term average
6.3 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
Env Act (SODRP) improvement ongoing
Volume & pollution
Estimate from 0.8 hours spilling →
River Wensum 1 0.8 down 90% 97%
Braintree Water Recycling Centre
Storm discharge at pumping station
Company site name
Braintree-Skitts Mill Outlet B
EA ID / permit
AWS00123 · AW2NFE13767
Outlet location
TL7640022600 (OS grid reference) · View on Apple Maps
WFD catchment
Brain (GB105037041140)
2024 spills / hours
105 / 62
Long-term average
53.0 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 0.8 hours spilling →
River Brain Nt 1 0.8 down 99% 100%
Stonely Sewage Pumping Station
Storm discharge at pumping station
Company site name
GT STAUGHTON-TOWN BRIDGE OV
EA ID / permit
AWS01309 · AW1NF143
Outlet location
TL1246064710 (OS grid reference) · View on Apple Maps
WFD catchment
Kym (GB105033043270)
2024 spills / hours
31 / 305
Long-term average
16.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
River Kym 1 0.8 down 97% 95%
Gt Baddow High Street Tabors
Overflow on sewer network
Company site name
GT BADDOW HIGH ST/TABORS HL OV
EA ID / permit
AWS00534 · ASENF12078
Outlet location
TL7279005220 (OS grid reference) · View on Apple Maps
WFD catchment
Chelmer (d/s confluence with Can) (GB105037033530)
2024 spills / hours
17 / 5.5
Long-term average
10.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Baddow Brook 2 0.8 down 88% 100%
Irthlingborough - Crouch Road CSO
Overflow on sewer network
Company site name
IRTHLINGBOROUGH-CROUCH RD SSO
EA ID / permit
AWS00653 · EPRNB3691NS
Outlet location
SP9464070280 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Ise to Islip (GB105032050383)
2024 spills / hours
10 / 15
Long-term average
8.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.8 hours spilling →
Trib of the River Nene 2 0.8 down 80% 96%
Norfolk Street CSO
Overflow on sewer network
Company site name
Norfolk Street Combined Sewer Overflow
EA ID / permit
AWS00886 · ANNNF13733
Outlet location
TF3314044590 (OS grid reference) · View on Apple Maps
WFD catchment
Maud Foster and Fen Catchwater Drains (GB205030056465)
Shellfish water
West Wash
2024 spills / hours
8 / 6.8
Long-term average
13.4 spills a year (monitored since 2019)
Monitor below 90%
Sensor failure / issue · Resolved - Sep
Investigation
No investigation activity in reporting period
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.7 hours spilling →
Maud Foster Drain 1 0.7 down 88% 61%
Colchester Hunting Gate CSO
Overflow on sewer network
Company site name
Colchester - Hunting Gate Combined Sewer Overflow
EA ID / permit
AWS00255 · ASETS19244
Outlet location
TM0131025010 (OS grid reference) · View on Apple Maps
WFD catchment
COLNE (GB520503713800)
Shellfish water
Colne; Pyefleet
2024 spills / hours
9 / 5.7
Long-term average
9.0 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 0.7 hours spilling →
Tidal River Colne 3 0.7 down 67% 100%
Monks Eleigh WRC
Inlet overflow at sewage works
Sewage works
Monks Eleigh
Company site name
Monks Eleigh WRC
EA ID / permit
AWS00852 · AW2NFE08960
Outlet location
TL9734048170 (OS grid reference) · View on Apple Maps
WFD catchment
Old River Brett (GB105036040760)
2024 spills / hours
147 / 969
Long-term average
112.0 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.7 hours spilling →
Trib of the River Brett & Gw 4 0.7 down 97% 100%
Woodbridge Water Recycling Centre
Storm tank at sewage works
Sewage works
Woodbridge
Company site name
Woodbridge Water Recycling Centre
EA ID / permit
AWS01538 · ASETS1250
Outlet location
TM2598047290 (OS grid reference) · View on Apple Maps
WFD catchment
Lark - Fynn (d/s confluence) (GB105035040300)
Shellfish water
Deben
2024 spills / hours
2 / 4.5
Long-term average
18.1 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 0.7 hours spilling →
Martlesham Creek 3 0.7 up 50% 100%
Northampton Manhole 15 Duston CSO
Overflow on sewer network
Company site name
NORTHAMPTON-MH 15, DUSTON
EA ID / permit
AWS00912 · EPRJB3296RM
Outlet location
SP7303059730 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Whilton Branch to conf Brampton Branch (GB105032045320)
2024 spills / hours
7 / 8.6
Long-term average
5.4 spills a year (monitored since 2019)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.6 hours spilling →
River Nene 1 0.6 down 86% 100%
Southend Prittle Brook Storage Tank
Overflow on sewer network
Company site name
Southend Prittle Brook Storage Tank
EA ID / permit
AWS01190 · S/WR76
Outlet location
TQ8536085460 (OS grid reference) · View on Apple Maps
WFD catchment
THAMES LOWER (GB530603911401)
Bathing water
Southend Chalkwell
Shellfish water
Foulness
2024 spills / hours
2 / 0.1
Long-term average
4.4 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 0.5 hours spilling →
Thames Estuary 5 0.5 up 150% 100%
The Dell Chalet Park
Overflow on sewer network
Company site name
MUNDESLEY-DELL CHALET PK OV
EA ID / permit
AWS01358 · AEENF791/10515
Outlet location
TG3157036490 (OS grid reference) · View on Apple Maps
WFD catchment
Mun (GB105034055900)
Bathing water
Mundesley
2024 spills / hours
3 / 1.3
Long-term average
6.7 spills a year (monitored since 2019)
Monitor below 90%
Comms failure / issue · Resolved - Mar
Investigation
No investigation activity in reporting period
Improvement
Bathing Water and/or Shellfish Water improvement ongoing
Volume & pollution
Estimate from 0.5 hours spilling →
River Mun 3 0.5 no change 89%
Braybrooke Water Recycling Centre
Storm tank at sewage works
Sewage works
Braybrooke
Company site name
BRAYBROOKE STW
EA ID / permit
AWS00133 · AW5NF757
Outlet location
SP7583084410 (OS grid reference) · View on Apple Maps
WFD catchment
Jordan (Welland) (GB105031045600)
2024 spills / hours
28 / 310
Long-term average
7.5 spills a year (monitored since 2022)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
R.Jordan River Welland Nt 2 0.5 down 93% 100%
Norwich - Chalk Hill Road CSO
Overflow on sewer network
Company site name
NORWICH - CHALK HILL RD
EA ID / permit
AWS00925 · EPRNB3591RM
Outlet location
TG2389008600 (OS grid reference) · View on Apple Maps
WFD catchment
Wensum DS Norwich (GB105034055882)
2024 spills / hours
0 / 0.0
Long-term average
7.8 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
River Wensum 2 0.5 up from 0 100%
Norwich - Rosary Road CSO
Overflow on sewer network
Company site name
NORWICH - ROSARY ROAD
EA ID / permit
AWS00933 · EPRNB3591NP
Outlet location
TG2383008480 (OS grid reference) · View on Apple Maps
WFD catchment
Wensum DS Norwich (GB105034055882)
2024 spills / hours
1 / 0.3
Long-term average
0.7 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
River Wensum 2 0.5 up 100% 100%
Watton - Swaffham Road TPS
Storm discharge at pumping station
Company site name
WATTON-SWAFFHAM ROAD TPS
EA ID / permit
AWS01447 · AECNF11906
Outlet location
TF3041400959 (OS grid reference) · View on Apple Maps
WFD catchment
North Level Pumped Areas 2 and 3 (GB205032050385)
2024 spills / hours
36 / 85
Long-term average
13.2 spills a year (monitored since 2020)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
Trib River Wissey 1 0.5 down 97% 100%
Horsey Toll Pumping Station
Storm discharge at pumping station
Company site name
Peterborough, Stanground, Whitlesey Rd PS
EA ID / permit
AWS00620 · AW5NF5062
Outlet location
TL2202096060 (OS grid reference) · View on Apple Maps
WFD catchment
Middle Level (GB205033000050)
2024 spills / hours
1 / 6.0
Long-term average
1.0 spills a year (monitored since 2024)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
River Nene (Old Course) 1 0.5 no change 100%
Linton Recreation Ground Terminal S
Storm discharge at pumping station
Company site name
LINTON-RECREATION GROUND TPS
EA ID / permit
AWS00738 · AW1NF3285
Outlet location
TL5581047050 (OS grid reference) · View on Apple Maps
WFD catchment
Granta (GB105033037810)
2024 spills / hours
0 / 0.0
Long-term average
1.0 spills a year (monitored since 2023)
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
River Granta 1 0.5 up from 0 100%
Uplands Drive
Storm discharge at pumping station
Company site name
SPRINGFIELD-UPLANDS SP
EA ID / permit
AWS01416 · ASENF2685
Outlet location
TL7170009000 (OS grid reference) · View on Apple Maps
WFD catchment
Chelmer (Gt. Easton - R. Can) (GB105037033950)
2024 spills / hours
14 / 24
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 0.5 hours spilling →
R Chelmer 1 0.5 down 93% 100%
Jotmans Lane/High Road CSO
Overflow on sewer network
Company site name
BENFLEET JOTMANS LANE CSO
EA ID / permit
AWS00666 · ASENF15691
Outlet location
TQ7718087080 (OS grid reference) · View on Apple Maps
WFD catchment
Crouch (A129 - Wickford) (GB105037028540)
2024 spills / hours
7 / 45
Long-term average
3.0 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 0.5 hours spilling →
Trib of the River Crouch 1 0.5 down 86% 100%
Leiston - Main Street #1 CSO
Overflow on sewer network
Company site name
Leiston - Main Street #1 CSO
EA ID / permit
AWS00723 · EPRNB3694RC
Outlet location
TM4523063300 (OS grid reference) · View on Apple Maps
WFD catchment
Leiston Beck (GB105035046271)
2024 spills / hours
4 / 1.3
Long-term average
5.3 spills a year (monitored since 2020)
Monitor below 90%
Comms failure / issue · Resolved - Oct
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 0.5 hours spilling →
Leiston Beck 2 0.5 down 50% 83%
Cogenhoe Mill Lane MH1001 Mm
Overflow on sewer network
Company site name
COGENHOE MILL LANE CSO
EA ID / permit
AWS01579 · Permit Applied For
Outlet location
SP8322961134 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Brampton Branch to conf Ise (GB105032045050)
2024 spills / hours
7 / 37
Long-term average
1.0 spills a year (monitored since 2024)
Monitor below 90%
Comms failure / issue · Resolved - Aug
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
Nene - conf Brampton Branch to conf Ise 1 0.5 down 86% 52%
Irthlingborough Lime Street CSO
Overflow on sewer network
Company site name
Irthlingborough - Lime Street CSO
EA ID / permit
AWS00654 · EPRNB3691EW
Outlet location
SP9518070610 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Ise to Islip (GB105032050383)
2024 spills / hours
20 / 221
Long-term average
17.4 spills a year (monitored since 2021)
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 0.5 hours spilling →
Trib of the River Nene 2 0.5 down 90% 37%
Rushden - Midland Road Combined Sewage Overflow
Overflow on sewer network
Company site name
Rushden Midland Rd CSO
EA ID / permit
AWS01572 · Permit Applied For
Outlet location
SP9547667189 (OS grid reference) · View on Apple Maps
WFD catchment
Nene - conf Ise to Islip (GB105032050383)
2024 spills / hours
8 / 13
Long-term average
2.0 spills a year (monitored since 2024)
Monitor below 90%
Comms failure / issue · Resolved - Oct
Investigation
Env Act (SODRP) investigation ongoing
Improvement
No improvement action in reporting period
Volume & pollution
Estimate from 0.5 hours spilling →
Tributary of the River Nene 2 0.5 down 75% 88%

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.