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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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Offline/Potential Pollution |
|---|---|---|---|---|---|
| Anglian Water | HANSLOPE STW | River Tove | 63 | 1,031h 40m | - |
| Anglian Water | LAVENDON STW | Lavendon Brook River Great Ous | 47 | 613h 7m | - |
| Anglian Water | SHERINGTON STW | River Great Ouse | 33 | 606h 5m | 1,278 h |
| Anglian Water | Weston Underwood WRC | River Gt Ouse | 39 | 602h 18m | - |
| Anglian Water | HANSLOPE STW | River Tove | 32 | 567h 11m | - |
| Anglian Water | SHERINGTON-WATER LANE SSO | River Great Ouse | 32 | 526h 15m | - |
| Anglian Water | BRADWELL-BRADWELL ROAD SSO | Loughton Brook | 30 | 509h 28m | - |
| Anglian Water | NEWPORT PAGNELL-WILLEN RD TPS | River Ouzel | 13 | 128h 57m | - |
| Anglian Water | SHERINGTON STW | River Great Ouse | 7 | 76h 15m | - |
| Anglian Water | Stony Stratford SSO | River Ouse | 4 | 28h 35m | - |
| Anglian Water | LAVENDON STW | Lavendon Brook River Great Ous | 9 | 26h 12m | - |
| Anglian Water | SHERINGTON-WATER LANE SSO | River Great Ouse | 4 | 15h 6m | - |
| Anglian Water | BRADWELL-BRADWELL ROAD SSO | Loughton Brook | 3 | 12h 27m | - |
| Anglian Water | Weston Underwood WRC | River Gt Ouse | 4 | 10h 14m | - |
| Anglian Water | WOLVERTON RAIL FREIGHT MD SSO | River Great Ouse | 3 | 3h 13m | - |
| Anglian Water | Stony Stratford SSO | River Ouse | 2 | 1h 18m | 51 h |
| Anglian Water | WOLVERTON RAIL FREIGHT MD SSO | River Great Ouse | 4 | 1h | - |
| Anglian Water | Weston Underwood WRC | River Great Ouse | 1 | 0h 14m | - |
| Anglian Water | FILGRAVE STW | River Great Ouse | 0 | 0h | - |
| Anglian Water | Weston Underwood WRC | River Great Ouse | 0 | 0h | - |
| Anglian Water | FILGRAVE STW | River Great Ouse | 0 | 0h | - |
| Anglian Water | NEWPORT PAGNELL-WILLEN RD TPS | River Ouzel | 0 | 0h | - |
| Anglian Water | CASTLETHORPE-CHEQUERS FARM SSO | Unknown | 0 | 0h | - |
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.