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Polluted by sewage 8,073 hours in 2025 , monitoring offline 5,702 hours , potential overflows 341 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 | LONG BENNINGTON WRC | River Witham | 46 | 711h 39m | - |
| Anglian Water | CLAYPOLE STW | River Witham | 34 | 612h 15m | - |
| Anglian Water | BOURNE STW | Bourne Eau + Black Sluice Dyke | 36 | 605h 39m | - |
| Anglian Water | OSBOURNBY STW | S.Beck N.Beck South Forty Foot | 37 | 601h 4m | - |
| Anglian Water | LONG BENNINGTON-CHURCH ST TPS | Ease Drain | 30 | 599h 42m | - |
| Anglian Water | CLAYPOLE-WELFEN LA TPS | Claypole Drain South | 34 | 592h | - |
| Anglian Water | MARSTON STW (LINCS) | River Witham | 30 | 591h 49m | - |
| Anglian Water | Bourne STW_A3 | Bourne Eau + Black Sluice Dyke | 32 | 567h 18m | - |
| Anglian Water | FULBECK STW | Beck | 36 | 562h 41m | - |
| Anglian Water | DYKE-VILLAGE ST SP | Unknown South Of Dyke Dr | 26 | 535h 34m | - |
| Anglian Water | LONG BENNINGTON-WATERLANE SSO | Dike River Witham | 19 | 355h 44m | - |
| Anglian Water | LONG BENNINGTON WRC | River Witham | 27 | 328h 50m | - |
| Anglian Water | BOURNE STW | Bourne Eau + Black Sluice Dyke | 15 | 157h 2m | - |
| Anglian Water | OSBOURNBY STW | S.Beck N.Beck South Forty Foot | 12 | 132h 8m | - |
| Anglian Water | CLAYPOLE STW | River Witham | 15 | 126h 43m | - |
| Anglian Water | FULBECK STW | Beck | 19 | 119h 1m | - |
| Anglian Water | HECKINGTON WRC | Heckington Eau | 6 | 86h 45m | - |
| Anglian Water | GT GONERBY-BELTON LANE SP | Running Furrows Drain River Wi | 22 | 85h 21m | - |
| Anglian Water | MARSTON STW (LINCS) | River Witham | 10 | 84h 55m | - |
| Anglian Water | HARLAXTON STW | Grantham Canal | 7 | 82h 30m | - |
| Severn Trent Water | WOOLSTHORPE STW (SSTO) | River Devon | 7 | 60h 37m | - |
| Severn Trent Water | WOOLSTHORPE STW (SSTO) | River Devon | 8 | 53h 23m | 69 h |
| Anglian Water | GT HALE SP | Beck | 9 | 44h 31m | 3,308 h |
| Anglian Water | GT GONERBY-BELTON LANE SP | Running Furrows Drain River Wi | 7 | 43h 44m | - |
| Anglian Water | HELPRINGHAM STW | Helpringham Eau South Forty Fo | 3 | 43h 4m | - |
| Anglian Water | HECKINGTON WRC | Heckington Eau | 7 | 36h 14m | - |
| Anglian Water | DYKE-VILLAGE ST SP | Unknown South Of Dyke Dr | 4 | 33h 45m | - |
| Anglian Water | HARLAXTON STW | Grantham Canal | 6 | 31h 9m | - |
| Anglian Water | MANTHORPE-MILL SP | Running Furrows Drain | 6 | 28h 58m | - |
| Anglian Water | HELPRINGHAM STW | Helpringham Eau South Forty Fo | 4 | 27h | - |
| Anglian Water | CLAYPOLE-WELFEN LA TPS | Claypole Drain South | 7 | 26h 11m | 341 h |
| Anglian Water | LONG BENNINGTON-CHURCH ST TPS | Ease Drain | 6 | 19h 30m | - |
| Anglian Water | DRY DODDINGTON TPS | Unnamed Dyke To River Witham | 2 | 19h 29m | - |
| Anglian Water | STORM WATER ALMA PARK | Unknown | 3 | 18h 45m | - |
| Anglian Water | MANTHORPE-MILL SP | Running Furrows Drain | 13 | 16h 1m | - |
| Anglian Water | Bourne STW_A3 | Bourne Eau + Black Sluice Dyke | 2 | 14h 12m | - |
| Anglian Water | STORM WATER ALMA PARK | Unknown | 7 | 8h 42m | - |
| Anglian Water | LONG BENNINGTON-WATERLANE SSO | Dike River Witham | 1 | 3h 30m | - |
| Anglian Water | LONG BENNINGTON-CHURCH ST TPS | Ease Drain | 1 | 2h 30m | - |
| Anglian Water | LONG BENNINGTON-CHURCH ST TPS | Ease Drain | 1 | 1h 45m | - |
| Anglian Water | WILSFORD STW | To Swallow Hole | 1 | 0h 59m | - |
| Anglian Water | DRY DODDINGTON TPS | Unnamed Dyke To River Witham | 1 | 0h 45m | - |
| Anglian Water | Grantham - Bridge End Grove CSO | River Witham | 0 | 0h | 1,162 h |
| Anglian Water | ALLINGTON STW | Foston Beck | 0 | 0h | - |
| Anglian Water | FOSTON SP | Unnamed Drain | 0 | 0h | - |
| Anglian Water | FOSTON SP | Unnamed Drain | 0 | 0h | - |
| Anglian Water | GT HALE SP | Beck | 0 | 0h | 1,161 h |
| Anglian Water | WILSFORD STW | To Swallow Hole | 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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org