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Polluted by sewage 8,634 hours in 2025 , potential overflows 102 hours
What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.
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| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Offline/Potential Pollution |
|---|---|---|---|---|---|
| Anglian Water | PERTENHALL STW | Keysoe Brook. River Kym | 79 | 1,544 h 19m | - |
| Anglian Water | LITTLE STAUGHTON STW | River Kym | 55 | 911 h 50m | - |
| Anglian Water | PERTENHALL STW | Keysoe Brook. River Kym | 45 | 807 h 47m | - |
| Anglian Water | TEMPSFORD STW | Stone Brook | 35 | 660 h 11m | - |
| Anglian Water | PAVENHAM-MILL LANE SP | River Great Ouse | 36 | 552 h 21m | - |
| Anglian Water | BROMHAM-VILLAGE ROAD SSO | River Great Ouse | 25 | 520 h 37m | - |
| Anglian Water | SANDY-GIRTFORD SSO | River Ivel | 24 | 512 h 13m | - |
| Anglian Water | TURVEY TPS | Ouse | 26 | 509 h 44m | 102 h |
| Anglian Water | RISELEY STW | Riseley Brook River Kym | 23 | 509 h 19m | - |
| Anglian Water | THURLEIGH-CHURCH END SP | Ravensden Brook - River Great Ouse | 22 | 507 h 35m | - |
| Anglian Water | Bolnhurst WRC | Duloe Brook | 29 | 445 h 22m | - |
| Anglian Water | LITTLE STAUGHTON STW | River Kym | 21 | 336 h 27m | - |
| Anglian Water | TEMPSFORD STW | Stone Brook | 14 | 307 h | - |
| Anglian Water | ODELL STW | Great River Ouse | 8 | 102 h 50m | - |
| Anglian Water | Bolnhurst WRC | Duloe Brook | 8 | 91 h 7m | - |
| Anglian Water | BIGGLESWADE STW | River Ivel | 15 | 50 h 28m | - |
| Anglian Water | SANDY STW | River Ivel | 3 | 45 h 12m | - |
| Anglian Water | ODELL STW | Great River Ouse | 4 | 39 h 42m | - |
| Anglian Water | NORTHILL-ICKWELL ROAD SP | River Ivel | 3 | 34 h 45m | - |
| Anglian Water | SANDY STW | River Ivel | 2 | 28 h 45m | - |
| Anglian Water | PAVENHAM-MILL LANE SP | River Great Ouse | 5 | 28 h 15m | - |
| Anglian Water | RISELEY STW | Riseley Brook River Kym | 2 | 16 h 55m | - |
| Anglian Water | TURVEY-STATION ROAD SP | Pictshill Brook, Gt Ouse | 9 | 14 h 37m | - |
| Anglian Water | TURVEY TPS | Ouse | 3 | 13 h 43m | - |
| Anglian Water | BROMHAM-VILLAGE ROAD SSO | River Great Ouse | 2 | 10 h 24m | - |
| Anglian Water | THURLEIGH-CHURCH END SP | Ravensden Brook - River Great Ouse | 2 | 8 h 35m | - |
| Anglian Water | SANDY-GIRTFORD SSO | River Ivel | 2 | 6 h 15m | - |
| Anglian Water | NORTHILL-ICKWELL ROAD SP | River Ivel | 1 | 4 h 44m | - |
| Anglian Water | BIGGLESWADE-SHORTMEAD ST TPS | River Ivel | 1 | 4 h | - |
| Anglian Water | POTTON-ROYSTON STREET SSO | Millbridge | 3 | 2 h 59m | - |
| Anglian Water | THURLEIGH STW | Thurleigh Brook | 3 | 1 h 22m | - |
| Anglian Water | ROXTON STW | River Great Ouse | 3 | 1 h 17m | - |
| Anglian Water | PODINGTON STW | Knuston Brook River Nene | 2 | 1 h 6m | - |
| Anglian Water | SWINESHEAD STW (BEDS) | Riseley Brook River Ky | 1 | 0 h 36m | - |
| Anglian Water | POTTON-ROYSTON STREET SSO | Millbridge | 1 | 0 h 29m | 0 h |
| Anglian Water | EVERTON STW | Stone Brook / River Gt Ouse | 1 | 0 h 21m | - |
| Anglian Water | Biggleswade Dark Lane Combined Sewer Overflow | River Ivel | 1 | 0 h 15m | - |
| Anglian Water | Stevington Church Road SSO | Stevington Brook | 1 | 0 h 15m | - |
| Anglian Water | THURLEIGH STW | Thurleigh Brook | 0 | 0 h | - |
| Anglian Water | TURVEY-COTTAGE/N BLOVIL R STW | River Great Ouse | 0 | 0 h | - |
| Anglian Water | SWINESHEAD STW (BEDS) | Riseley Brook River Ky | 0 | 0 h | - |
| Anglian Water | PODINGTON STW | Knuston Brook River Nene | 0 | 0 h | - |
| Anglian Water | TURVEY-COTTAGE/N BLOVIL R STW | River Great Ouse | 0 | 0 h | - |
| Anglian Water | BIGGLESWADE STW | River Ivel | 0 | 0 h | - |
| Anglian Water | Biggleswade Dark Lane Combined Sewer Overflow | River Ivel | 0 | 0 h | - |
| Anglian Water | EVERTON STW | Stone Brook / River Gt Ouse | 0 | 0 h | - |
| Anglian Water | Kempston-Ibbetts Close SP | River Ouse | 0 | 0 h | - |
| Anglian Water | KEMPSTON-VILLAGE HALL PS | River Great Ouse | 0 | 0 h | - |
| Anglian Water | TURVEY-STATION ROAD SP | Pictshill Brook, Gt Ouse | 0 | 0 h | - |
| Anglian Water | ROXTON STW | River Great Ouse | 0 | 0 h | - |
| Anglian Water | KEMPSTON-VILLAGE HALL PS | River Great Ouse | 0 | 0 h | - |
| Anglian Water | SANDY-HIGH STREET SSO | River Ivel | 0 | 0 h | - |
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