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
Riseley STW Inlet overflow at sewage works Sewage works Riseley EA ID / permit AWS01052 · AWCNF1178 Outlet location TL0506063850 (OS grid reference) · View on Apple Maps WFD catchment Pertenhall Brook (GB105033042960) 2024 spills / hours 22 / 110 Long-term average 15.5 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 24 hours spilling →	Riseley Brook River Kym Nt	5	24	down 77%	100%
Burton Latimer Higham Road CSO Overflow on sewer network Company site name BURTON LATIMER-HIGHAM ROAD SSO EA ID / permit AWS00181 · AW5NF1825 Outlet location SP9019074360 (OS grid reference) · View on Apple Maps WFD catchment Ise - Lower (GB105032045140) 2024 spills / hours 44 / 56 Long-term average 54.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 24 hours spilling →	Trib River Ise	22	24	down 50%	100%
Thorndon-Standwell Gn TPS Storm discharge at pumping station EA ID / permit AWS01370 · ASENF2673 Outlet location TM1350070300 (OS grid reference) · View on Apple Maps WFD catchment Dove (GB105034045710) 2024 spills / hours 27 / 185 Long-term average 13.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 24 hours spilling →	Tributary of the River Dove	7	24	down 74%	100%
Lawn Lane Terminal PS Storm discharge at pumping station Company site name SUTTON-LAWN LANE SP EA ID / permit AWS00714 · AECNF11020 Outlet location TL4488578577 (OS grid reference) · View on Apple Maps WFD catchment Old Bedford River / River Delph (inc The Hundred Foot Washes) (GB205033000060) 2024 spills / hours 15 / 91 Long-term average 9.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	tributary Hundred Foot Drain	3	23	down 80%	100%
Stoke Bridge CSO Overflow on sewer network Company site name Stoke Bridge Combined Sewer Overflow EA ID / permit AWS01303 · ASETS12155 Outlet location TM1629043940 (OS grid reference) · View on Apple Maps WFD catchment Gipping (d/s Stowmarket) (GB105035046280) 2024 spills / hours 25 / 69 Long-term average 14.0 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	tidal River Orwell	11	23	down 56%	100%
SO at Millfleet Overflow on sewer network Company site name KINGS LYNN-MILLFLEET SO4 SSO EA ID / permit AWS01148 · AW1NF1043 Outlet location TF6185019670 (OS grid reference) · View on Apple Maps WFD catchment Gaywood River (GB105033047680) 2024 spills / hours 71 / 84 Long-term average 52.0 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 23 hours spilling →	Culverted section of Gaywood	33	23	down 54%	96%
Rayleigh West STW Storm tank at sewage works Sewage works Rayleigh West Company site name RAYLEIGH-WEST STW EA ID / permit AWS01037 · AW2TSE12870 Outlet location TQ7921094740 (OS grid reference) · View on Apple Maps WFD catchment CROUCH (GB520503704100) 2024 spills / hours 14 / 113 Long-term average 13.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing, UWWTR improvement ongoing Volume & pollution Estimate from 23 hours spilling →	River Crouch T	4	23	down 71%	100%
Shipdham - Parklands Avenue CSO Overflow on sewer network Company site name SHIPDHAM-PARKLANDS AVENUE CSO EA ID / permit AWS01127 · AEENF12394 Outlet location TF9569007030 (OS grid reference) · View on Apple Maps WFD catchment Blackwater (Yare) (GB105034051260) 2024 spills / hours 33 / 147 Long-term average 23.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Tributary of Blackwater River	11	23	down 67%	98%
Northampton Becketts Park CSO Overflow on sewer network Company site name Northampton Becketts Park Combined Sewer Overflow EA ID / permit AWS00907 · AW5NF1832 Outlet location SP7582060020 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Brampton Branch to conf Ise (GB105032045050) 2024 spills / hours 48 / 65 Long-term average 35.7 spills a year (monitored since 2019) 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 23 hours spilling →	River Nene	31	23	down 35%	100%
Raunds SSO Overflow on sewer network Company site name RAUNDS-BROOK ST SSO EA ID / permit AWS01030 · AW5NF530 Outlet location SP9975072680 (OS grid reference) · View on Apple Maps WFD catchment Hog Dyke (GB105032045120) 2024 spills / hours 29 / 54 Long-term average 19.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 23 hours spilling →	Trib Hog Dyke	11	23	down 62%	100%
St Peters Street CSO Overflow on sewer network Company site name St Peter's Street #X Combined Sewer Overflow EA ID / permit AWS01266 · EPRMB3495AV Outlet location TM5388092820 (OS grid reference) · View on Apple Maps WFD catchment Waveney (Ellingham Mill - Burgh St. Peter) (GB105034045903) 2024 spills / hours 44 / 44 Long-term average 38.8 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 22 hours spilling →	Inner Harbour (Tidal)	33	22	down 25%	100%
Sports Centre Mill Rd. Overflow on sewer network Company site name COLCHESTER-BERECHURCH RD EA ID / permit AWS01214 · AW2NFC2913 Outlet location TM0060028888 (OS grid reference) · View on Apple Maps WFD catchment Salary Brook (GB105037041320) 2024 spills / hours 14 / 10 Long-term average 18.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Salary Brook	23	22	up 64%	99%
North Elmham STW Storm tank at sewage works Sewage works North Elmham EA ID / permit AWS00892 · AW4NF199X Outlet location TF9975021190 (OS grid reference) · View on Apple Maps WFD catchment Wensum US Norwich (GB105034055881) 2024 spills / hours 57 / 680 Long-term average 22.8 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	River Wensum Nt	3	22	down 95%	100%
Thornton Road PS Storm discharge at pumping station Company site name S KELSEY-SOUTH SP EA ID / permit AWS01372 · AW3NFF1205 Outlet location TF0413097840 (OS grid reference) · View on Apple Maps WFD catchment Caistor Canal Catchment (trib of Ancholme) (GB104029061920) 2024 spills / hours 8 / 19 Long-term average 14.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	Dyke tributary of South Kelsey Catchwater	11	22	up 38%	100%
Chelmsford Water Recycling Centre Storm tank at sewage works Sewage works Chelmsford Company site name CHELMSFORD STW EA ID / permit AWS00220 · AW2TSE9961 Outlet location TL8414007800 (OS grid reference) · View on Apple Maps WFD catchment BLACKWATER (GB520503714000) 2024 spills / hours 19 / 95 Long-term average 15.5 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 22 hours spilling →	Blackwater Est &Trib R.Chelmer	4	22	down 79%	100%
London Rd/Hadleigh Rd - MH8504 Overflow on sewer network Company site name IPSWICH MH8504 LONDON RD/HADLEIGH RD JUNCTION EA ID / permit AWS00763 · NPSWQD000321 Outlet location TM1497044560 (OS grid reference) · View on Apple Maps WFD catchment Gipping (d/s Stowmarket) (GB105035046280) 2024 spills / hours 17 / 17 Long-term average 21.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 22 hours spilling →	River Orwell	26	22	up 53%	99%
Eight Ash Green STW Storm tank at sewage works Sewage works Eight Ash Green EA ID / permit AWS00393 · ASENF12063 Outlet location TL9300027150 (OS grid reference) · View on Apple Maps WFD catchment Colne (d/s Doe's Corner) (GB105037041330) 2024 spills / hours 45 / 301 Long-term average 33.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 22 hours spilling →	River Colne	5	22	down 89%	100%
King'S Lynn Purfleet Quay PS Storm discharge at pumping station Company site name King's Lynn Purfleet Quay Pumping Station EA ID / permit AWS00688 · AECTS10467 Outlet location TF6154020030 (OS grid reference) · View on Apple Maps WFD catchment GREAT OUSE (GB530503300300) Shellfish water South East Wash 2024 spills / hours 26 / 48 Long-term average 27.6 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Great Ouse (Tidal River)	25	21	down 4%	96%
Prentice Road Storm discharge at pumping station Company site name STOWMARKET-PRENTICE RD TPS EA ID / permit AWS01010 · ASENF2538 Outlet location TM0500058700 (OS grid reference) · View on Apple Maps WFD catchment Gipping (through Stowmarket) (GB105035046130) 2024 spills / hours 22 / 50 Long-term average 16.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Haughley Water	10	21	down 55%	100%
Town Hall Pumping Station Storm discharge at pumping station Company site name GT YARMOUTH-TOWN HALL SP EA ID / permit AWS01402 · AEETS12179 Outlet location TG5222007470 (OS grid reference) · View on Apple Maps WFD catchment BURE & WAVENEY & YARE & LOTHING (GB510503410700) 2024 spills / hours 28 / 21 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 21 hours spilling →	The Tidal River Yare	30	21	up 7%	100%
Loddon-Knapps Bridge PS Storm discharge at pumping station Company site name LODDON-KNAPPS BRIDGE SP EA ID / permit AWS00761 · EPRDP3728GJ Outlet location TM3648098350 (OS grid reference) · View on Apple Maps WFD catchment Chet (GB105034051190) 2024 spills / hours 2 / 4.0 Long-term average 4.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Trib of River Chet	6	21	up 200%	100%
Higham Ferrers-Northampton Road CSO Overflow on sewer network Company site name HIGHAM FERRERS-NORTHAMPTON RD EA ID / permit AWS00595 · AWNNF13857 Outlet location SP9508068340 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Ise to Islip (GB105032050383) 2024 spills / hours 22 / 120 Long-term average 17.2 spills a year (monitored since 2020) 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 21 hours spilling →	Unnamed Trib. of R Nene	9	21	down 59%	27%
Sports Centre Mill Rd. Overflow on sewer network Company site name COLCHESTER-DILBRIDGE RD OV EA ID / permit AWS01223 · AW2NFC298 Outlet location TM0060028888 (OS grid reference) · View on Apple Maps WFD catchment Salary Brook (GB105037041320) 2024 spills / hours 15 / 11 Long-term average 19.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Tendring Streams	24	21	up 60%	99%
SSO at St Pegas Road Overflow on sewer network Company site name PEAKIRK-ST PEGAS ROAD SSO EA ID / permit AWS01233 · AW5NF1796 Outlet location TF1670006120 (OS grid reference) · View on Apple Maps WFD catchment Folly River (including Werrington and Marholm Brooks) (GB105031050560) 2024 spills / hours 35 / 460 Long-term average 16.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	Car Dyke	5	21	down 86%	100%
Flag Fen Inlet Pumping Station Storm discharge at pumping station Company site name PETERBOROUGH (FLAG FEN) STW EA ID / permit AWS00440 · AWNNF13529 Outlet location TL2214098130 (OS grid reference) · View on Apple Maps WFD catchment North Level Pumped Areas 2 and 3 (GB205032050385) 2024 spills / hours 31 / 80 Long-term average 17.0 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement Env Act (SODRP) improvement ongoing Volume & pollution Estimate from 21 hours spilling →	The Counter Drain	3	21	down 90%	100%
Linton Water Recycling Centre Storm tank at sewage works Sewage works Linton Company site name LINTON STW EA ID / permit AWS00739 · ASCNF1125 Outlet location TL5499047860 (OS grid reference) · View on Apple Maps WFD catchment Granta (GB105033037810) 2024 spills / hours 13 / 9.3 Long-term average 11.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Granta Nt	9	21	down 31%	99%
SO Leighton Buzzard Overflow on sewer network Company site name LEIGHTON LINSLD-KING ST TPS EA ID / permit AWS01152 · AW1NF410 Outlet location SP9190025900 (OS grid reference) · View on Apple Maps WFD catchment Ouzel US Caldecote Mill (GB105033037971) 2024 spills / hours 68 / 205 Long-term average 46.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 21 hours spilling →	River Ouzel	25	21	down 63%	100%
Gosfield STW Storm tank at sewage works Sewage works Gosfield EA ID / permit AWS00473 · ASENF1076 Outlet location TL7826028980 (OS grid reference) · View on Apple Maps WFD catchment Bourne Brook (GB105037041150) 2024 spills / hours 22 / 111 Long-term average 18.8 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 20 hours spilling →	Bourne Brook River Colne Nt	3	20	down 86%	100%
Dry Doddington TPS Storm discharge at pumping station EA ID / permit AWS00357 · ANNNF2261 Outlet location SK8539046630 (OS grid reference) · View on Apple Maps WFD catchment Sand Beck (GB105030056160) 2024 spills / hours 16 / 89 Long-term average 9.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Unnamed Dyke to River Witham	3	20	down 81%	100%
Littleport-Hoof Close CSO Overflow on sewer network Company site name LITTLEPORT-HOOF CLOSE SSO EA ID / permit AWS00759 · AECNF11305 Outlet location TL5670086480 (OS grid reference) · View on Apple Maps WFD catchment Ely Ouse (South Level) (GB205033000070) 2024 spills / hours 43 / 54 Long-term average 38.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	unnamed ditch tributary Ely Ou	25	20	down 42%	100%
Sutton - Sth of the Row CSO Overflow on sewer network Company site name SUTTON-STH OF THE ROW OV EA ID / permit AWS01336 · AW1NF996 Outlet location TL4415078370 (OS grid reference) · View on Apple Maps WFD catchment Old Bedford River / River Delph (inc The Hundred Foot Washes) (GB205033000060) 2024 spills / hours 46 / 607 Long-term average 23.6 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Counter Drain	5	20	down 89%	98%
Berry Green PS Storm discharge at pumping station Company site name STRETHAM-OFF BERRY GREEN SP EA ID / permit AWS00083 · AECNF10544 Outlet location TL5161075190 (OS grid reference) · View on Apple Maps WFD catchment Ely Ouse (South Level) (GB205033000070) 2024 spills / hours 10 / 54 Long-term average 6.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	tributary River Great Ouse	3	20	down 70%	100%
Great Casterton SPS Storm discharge at pumping station Company site name GREAT CASTERTON TPS EA ID / permit AWS00487 · AWNNF356 Outlet location TF0050009300 (OS grid reference) · View on Apple Maps WFD catchment Gwash (GB105031050610) 2024 spills / hours 26 / 237 Long-term average 16.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	River Gwash	7	20	down 73%	100%
Manby STW Storm tank at sewage works Sewage works Manby EA ID / permit AWS00804 · ANNNF2074 Outlet location TF4073086120 (OS grid reference) · View on Apple Maps WFD catchment Long Eau (GB105029061670) 2024 spills / hours 108 / 1,458 Long-term average 88.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Long Eau	18	20	down 83%	100%
Stowmarket STW Storm tank at sewage works Sewage works Stowmarket EA ID / permit AWS01320 · ASENF1211 Outlet location TM0593058140 (OS grid reference) · View on Apple Maps WFD catchment Gipping (d/s Stowmarket) (GB105035046280) 2024 spills / hours 10 / 65 Long-term average 10.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Tributary of River Gipping Nt	4	20	down 60%	100%
Fambridge Rd - Maldon Overflow on sewer network Company site name MALDON-FAMBRIDGE RD EA ID / permit AWS00427 · AW2TSE07963 Outlet location TL8590007600 (OS grid reference) · View on Apple Maps WFD catchment Chelmer (d/s confluence with Can) (GB105037033530) 2024 spills / hours 4 / 2.3 Long-term average 4.0 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 20 hours spilling →	River Blackwater	4	20	no change	100%
Hardingstone Sewerage Overflow on sewer network Company site name HARDINGSTONE SEWERAGE SCHEME EA ID / permit AWS00555 · AW5NF71 Outlet location SP7670058300 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Brampton Branch to conf Ise (GB105032045050) 2024 spills / hours 74 / 262 Long-term average 54.4 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Nene - conf Brampton Branch to conf Ise	12	20	down 84%	98%
Kings Lynn - Millfleet SO1 CSO Overflow on sewer network Company site name KINGS LYNN-MILLFLEET SO1 OV EA ID / permit AWS00684 · AW1NF1040 Outlet location TF6208019710 (OS grid reference) · View on Apple Maps WFD catchment Gaywood River (GB105033047680) 2024 spills / hours 52 / 76 Long-term average 56.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 20 hours spilling →	Culverted section of Gaywood R	20	20	down 62%	98%
Great Doddington STW Storm tank at sewage works Sewage works Great Doddington EA ID / permit AWS00493 · AW5NF140B Outlet location SP8880064110 (OS grid reference) · View on Apple Maps WFD catchment Nene - conf Brampton Branch to conf Ise (GB105032045050) 2024 spills / hours 47 / 300 Long-term average 38.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement UWWTR improvement ongoing Volume & pollution Estimate from 20 hours spilling →	River Nene Nt	15	20	down 68%	100%
Kirby Main Maltings Pumping Station Storm discharge at pumping station Company site name Kirby Main Maltings Pumping Station EA ID / permit AWS00701 · ASENF12395 Outlet location TM2196022340 (OS grid reference) · View on Apple Maps WFD catchment Hamford Water (GB680503713700) Shellfish water Walton Backwaters 2024 spills / hours 15 / 73 Long-term average 25.3 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	The Marsh House Ditch	3	19	down 80%	100%
Brackley Terminal PS Storm discharge at pumping station Company site name BRACKLEY (EX STW SITE) TPS EA ID / permit AWS00112 · AWCNF10460 Outlet location SP5903036510 (OS grid reference) · View on Apple Maps WFD catchment Ouse US Brackley (GB105033037880) 2024 spills / hours 34 / 66 Long-term average 21.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	Tributary of the River Ouse	12	19	down 65%	100%
Rotterdam Road #2 CSO Overflow on sewer network Company site name Lowestoft - Rotterdam & Gorleston CSOs EA ID / permit AWS01067 · EPRLB3996VP Outlet location TM5388092820 (OS grid reference) · View on Apple Maps WFD catchment Waveney (Ellingham Mill - Burgh St. Peter) (GB105034045903) 2024 spills / hours 40 / 32 Long-term average 40.3 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	Inner Harbour	27	19	down 33%	100%
Sewers in Bradwell Road Overflow on sewer network Company site name BRADWELL-BRADWELL ROAD SSO EA ID / permit AWS01118 · AW1NF1140 Outlet location SP8316141362 (OS grid reference) · View on Apple Maps WFD catchment Loughton Brook (GB105033037900) 2024 spills / hours 21 / 58 Long-term average 15.5 spills a year (monitored since 2024) Investigation Env Act (SODRP) investigation ongoing, Bathing Water and/or Shellfish Water investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 19 hours spilling →	Loughton Brook	10	19	down 52%	100%
Boston London Road Pumping Station Storm discharge at pumping station Company site name Boston London Road Pumping Station EA ID / permit AWS00099 · ANNTS13726 Outlet location TF3272043340 (OS grid reference) · View on Apple Maps WFD catchment WITHAM (GB530503000100) Shellfish water West Wash 2024 spills / hours 56 / 123 Long-term average 23.5 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	The Haven (Estuary)	22	18	down 61%	100%
Mattishall STW Storm tank at sewage works Sewage works Mattishall EA ID / permit AWS00826 · AEENF2076 Outlet location TG0256012130 (OS grid reference) · View on Apple Maps WFD catchment Tud (GB105034051000) 2024 spills / hours 44 / 540 Long-term average 23.3 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	River Tud Nt	5	18	down 89%	100%
Turvey SO Storm discharge at pumping station Company site name TURVEY TPS EA ID / permit AWS01410 · AW1NF440 Outlet location SP9390052400 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Newport Pagnell to Roxton) (GB105033047923) 2024 spills / hours 41 / 681 Long-term average 17.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Ouse (Newport Pagnell to Roxton)	5	18	down 88%	100%
Main St PS Storm discharge at pumping station Company site name PYMORE-MAIN STREET SP EA ID / permit AWS00798 · AECNF10487 Outlet location TL4990085790 (OS grid reference) · View on Apple Maps WFD catchment Old Bedford River / River Delph (inc The Hundred Foot Washes) (GB205033000060) 2024 spills / hours 15 / 123 Long-term average 7.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	tributary One Hundred Foot Dra	2	18	down 87%	100%
Skellingthorpe Lincoln Road CSO Overflow on sewer network Company site name SKELLINGTHORPE, LINCOLN RD CSO EA ID / permit AWS01139 · AWNNF13437 Outlet location SK9273071780 (OS grid reference) · View on Apple Maps WFD catchment Boultham Catchwater Drain (GB105030062380) 2024 spills / hours 8 / 16 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 18 hours spilling →	Tributary of Catchwater Drain	6	18	down 25%	100%
North Denes/Jellicoe Road Pumping S Storm discharge at pumping station Company site name GT YARMTH-N DENES/JELLICO R SP EA ID / permit AWS00891 · AEETS12176 Outlet location TG5222009790 (OS grid reference) · View on Apple Maps WFD catchment BURE & WAVENEY & YARE & LOTHING (GB510503410700) 2024 spills / hours 38 / 43 Long-term average 31.0 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	Tidal River Bure	15	18	down 61%	100%
Offord Clunny Station Lane TPS Storm discharge at pumping station Company site name OFFORD CLUNY-STATION LANE TPS EA ID / permit AWS00951 · AWCNF2773 Outlet location TL2181067100 (OS grid reference) · View on Apple Maps WFD catchment Ouse (Roxton to Earith) (GB105033047921) 2024 spills / hours 55 / 1,075 Long-term average 20.7 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 18 hours spilling →	River Great Ouse	3	18	down 95%	100%

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.