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Polluted by sewage 3,529 hours in 2025
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for South Suffolk, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Anglian Water | IPSWICH-CLIFF QUAY RAEBURN ST | Tidal River Orwell | 57 | 623 h 50m | 25.96 |
| Anglian Water | HOLBROOK STW | Holbrook Stream | 51 | 574 h 57m | 23.92 |
| Anglian Water | IPSWICH-CLIFF QUAY STW (SOUTH EASTERN AREA SEWER CSO) | Tidal River Orwell | 55 | 554 h | 23.08 |
| Anglian Water | Sudbury Great Eastern Road Terminal Pumping Station | River Stour | 39 | 523 h 9m | 21.79 |
| Anglian Water | LAVENHAM STW | Lavenham Brook River Brett | 25 | 510 h | 21.25 |
| Anglian Water | Sudbury Water Recycling Centre | River Stour | 11 | 205 h 44m | 8.54 |
| Anglian Water | IPSWICH-CLIFF QUAY STW (EASTERN AREA SEWER CSO) | Tidal River Orwell | 27 | 87 h 54m | 3.62 |
| Anglian Water | HADLEIGH STW | River Brett | 4 | 45 h 41m | 1.88 |
| Anglian Water | HADLEIGH STW | River Brett | 3 | 43 h 43m | 1.79 |
| Anglian Water | GLEMSFORD STW | River Glem | 4 | 42 h 57m | 1.75 |
| Anglian Water | BOXFORD STW | River Box | 5 | 38 h 9m | 1.58 |
| Anglian Water | LAWSHALL-HARROWS TRIANGLE SP | River Lark | 4 | 32 h 14m | 1.33 |
| Anglian Water | IPSWICH-CLIFF QUAY RAEBURN ST | Tidal River Orwell | 8 | 31 h 13m | 1.29 |
| Anglian Water | HOLBROOK STW | Holbrook Creek Estuary Stour | 6 | 26 h 27m | 1.08 |
| Anglian Water | LAVENHAM STW | Lavenham Brook River Brett | 7 | 25 h 43m | 1.04 |
| Anglian Water | WOOLVERSTONE-MARINA TPS | River Orwell | 9 | 24 h 35m | 1 |
| Anglian Water | ELMSETT STW | Utray Belstead Brook | 7 | 21 h 25m | 0.88 |
| Anglian Water | SPROUGHTON-DAUNDY CLOSE TPS (ELTON PARK PS) | River Gipping | 19 | 18 h 59m | 0.75 |
| Anglian Water | Sudbury Great Eastern Road Terminal Pumping Station | River Stour | 4 | 15 h | 0.62 |
| Anglian Water | LAWSHALL-HARROWS TRIANGLE SP | River Lark | 2 | 13 h 13m | 0.54 |
| Anglian Water | IPSWICH-CLIFF QUAY STW (SOUTH EASTERN AREA SEWER CSO) | Tidal River Orwell | 7 | 12 h | 0.5 |
| Anglian Water | BOXFORD STW | River Box | 2 | 11 h 14m | 0.46 |
| Anglian Water | ELMSETT STW | Utray Belstead Brook | 1 | 7 h 2m | 0.29 |
| Anglian Water | GLEMSFORD-SKATES HILL SP | Unnamed River Stour | 3 | 6 h 45m | 0.25 |
| Anglian Water | SPROUGHTON-DAUNDY CLOSE TPS (ELTON PARK PS) | River Gipping | 5 | 6 h 6m | 0.25 |
| Anglian Water | LAVENHAM STW PS | Lavenham Brook | 1 | 5 h 45m | 0.21 |
| Anglian Water | LAVENHAM STW PS | Lavenham Brook | 1 | 4 h 45m | 0.17 |
| Anglian Water | HADLEIGH STW | River Brett | 2 | 3 h 31m | 0.12 |
| Anglian Water | East Bergholt WRC | Gosnalls Brook River Stour | 2 | 3 h 17m | 0.12 |
| Anglian Water | HOLBROOK STW | Holbrook Stream | 4 | 3 h 10m | 0.12 |
| Anglian Water | SHOTLEY-OVERHALL FM STW | River Orwell T | 3 | 2 h 14m | 0.08 |
| Anglian Water | Sudbury The Croft CSO | River Stour | 4 | 1 h 15m | 0.04 |
| Anglian Water | Sudbury Bailey and Coates Combined Sewer Overflow | R Stour | 3 | 1 h | 0.04 |
| Anglian Water | East Bergholt WRC | Gosnalls Brook River Stour | 1 | 0 h 56m | 0 |
| Anglian Water | Brantham Factory Lane OV | River Stour | 3 | 0 h 45m | 0 |
| Anglian Water | Monks Eleigh WRC | River Brett | 1 | 0 h 29m | 0 |
| Anglian Water | SHOTLEY-OVERHALL FM STW | River Orwell T | 1 | 0 h 13m | 0 |
| Anglian Water | GLEMSFORD-SKATES HILL SP | Unnamed River Stour | 1 | 0 h 2m | 0 |
| Anglian Water | HOLBROOK STW | Holbrook Creek Estuary Stour | 0 | 0 h | 0 |
| Anglian Water | WOOLVERSTONE-MARINA TPS | River Orwell | 0 | 0 h | 0 |
| Anglian Water | SUDBURY-CORNARD RD SP | River Stour | 0 | 0 h | 0 |
| Anglian Water | HADLEIGH STW | River Brett | 0 | 0 h | 0 |
| Anglian Water | IPSWICH-CLIFF QUAY STW (EASTERN AREA SEWER CSO) | Tidal River Orwell | 0 | 0 h | 0 |
| Anglian Water | Sudbury The Croft CSO | River Stour | 0 | 0 h | 0 |
| Anglian Water | Sudbury Water Recycling Centre | River Stour | 0 | 0 h | 0 |
| Anglian Water | CAPEL ST MARY-PARKINS CL YD SP | Dodnash Brook | 0 | 0 h | 0 |
| Anglian Water | BRANTHAM SCHOOL LANE SP | River Stour | 0 | 0 h | 0 |
| Anglian Water | GREAT WENHAM STW | Stutton Brook | 0 | 0 h | 0 |
| Anglian Water | Brantham Factory Lane OV | River Stour | 0 | 0 h | 0 |
| Anglian Water | Monks Eleigh WRC | River Brett | 0 | 0 h | 0 |
| Anglian Water | GREAT CORNARD STW | Cornard Black Brook | 0 | 0 h | 0 |
| Anglian Water | BOXTED-COTTAGE (SUFFOLK) STW | Glem - Lower | 0 | 0 h | 0 |
| Anglian Water | Sudbury Bailey and Coates Combined Sewer Overflow | R Stour | 0 | 0 h | 0 |
| Anglian Water | BOXFORD-STONE ST TPS | River Box | 0 | 0 h | 0 |
| Anglian Water | GREAT CORNARD STW | Cornard Black Brook | 0 | 0 h | 0 |
| Anglian Water | GT WALDINGFIELD-FOLLEY RD SP | River Box | 0 | 0 h | 0 |
| Anglian Water | CHELSWORTH-CAKEBRIDGE LA SP | River Brett | 0 | 0 h | 0 |
EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water
Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API
Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.
This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org