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Polluted by sewage 4,759 hours in 2025 , potential overflows 1,329 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 | HANSLOPE STW | River Tove | 63 | 1,031 h 40m | - |
| Anglian Water | LAVENDON STW | Lavendon Brook River Great Ous | 47 | 613 h 7m | - |
| Anglian Water | SHERINGTON STW | River Great Ouse | 33 | 606 h 5m | 1,278 h |
| Anglian Water | Weston Underwood WRC | River Gt Ouse | 39 | 602 h 18m | - |
| Anglian Water | HANSLOPE STW | River Tove | 32 | 567 h 11m | - |
| Anglian Water | SHERINGTON-WATER LANE SSO | River Great Ouse | 32 | 526 h 15m | - |
| Anglian Water | BRADWELL-BRADWELL ROAD SSO | Loughton Brook | 30 | 509 h 28m | - |
| Anglian Water | NEWPORT PAGNELL-WILLEN RD TPS | River Ouzel | 13 | 128 h 57m | - |
| Anglian Water | SHERINGTON STW | River Great Ouse | 7 | 76 h 15m | - |
| Anglian Water | Stony Stratford SSO | River Ouse | 4 | 28 h 35m | - |
| Anglian Water | LAVENDON STW | Lavendon Brook River Great Ous | 9 | 26 h 12m | - |
| Anglian Water | SHERINGTON-WATER LANE SSO | River Great Ouse | 4 | 15 h 6m | - |
| Anglian Water | BRADWELL-BRADWELL ROAD SSO | Loughton Brook | 3 | 12 h 27m | - |
| Anglian Water | Weston Underwood WRC | River Gt Ouse | 4 | 10 h 14m | - |
| Anglian Water | WOLVERTON RAIL FREIGHT MD SSO | River Great Ouse | 3 | 3 h 13m | - |
| Anglian Water | Stony Stratford SSO | River Ouse | 2 | 1 h 18m | 51 h |
| Anglian Water | WOLVERTON RAIL FREIGHT MD SSO | River Great Ouse | 4 | 1 h | - |
| Anglian Water | Weston Underwood WRC | River Great Ouse | 1 | 0 h 14m | - |
| Anglian Water | FILGRAVE STW | River Great Ouse | 0 | 0 h | - |
| Anglian Water | Weston Underwood WRC | River Great Ouse | 0 | 0 h | - |
| Anglian Water | FILGRAVE STW | River Great Ouse | 0 | 0 h | - |
| Anglian Water | NEWPORT PAGNELL-WILLEN RD TPS | River Ouzel | 0 | 0 h | - |
| Anglian Water | CASTLETHORPE-CHEQUERS FARM SSO | Unknown | 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