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Polluted by sewage 1,264 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 Sherwood Forest, 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) |
|---|---|---|---|---|---|
| Severn Trent Water | HUCKNALL - SHELTON AVENUE (CSO) | River Leen | 45 | 185 h 18m | 7.71 |
| Severn Trent Water | EDWINSTOWE STW (SSTO) | River Maun | 48 | 157 h 53m | 6.54 |
| Severn Trent Water | HUCKNALL - SHELTON AVENUE (CSO) | River Leen | 19 | 134 h 5m | 5.58 |
| Severn Trent Water | CALVERTON STW (SSTO) | Grimesmoor Dyke | 14 | 91 h 52m | 3.79 |
| Severn Trent Water | RAINWORTH STW (SSTO) | Rainworth Water | 18 | 84 h 6m | 3.5 |
| Severn Trent Water | BILSTHORPE STW (SSTO) | Rainworth Water | 10 | 69 h 43m | 2.88 |
| Severn Trent Water | CALVERTON STW (SSTO) | Grimesmoor Dyke | 7 | 68 h 55m | 2.83 |
| Severn Trent Water | EDWINSTOWE STW (SSTO) | River Maun | 14 | 64 h 43m | 2.67 |
| Severn Trent Water | BOUGHTON STW (SSTO) | Boughton Dyke | 7 | 64 h 35m | 2.67 |
| Severn Trent Water | RAINWORTH STW (CSO) | Rainworth Water | 17 | 43 h 25m | 1.79 |
| Severn Trent Water | BLIDWORTH - DALE LANE/LYNDHURST AVE (CSO) | Groundwater Via Infiltration | 3 | 39 h 43m | 1.62 |
| Severn Trent Water | EDWINSTOWE - FOURTH AVENUE (CSO) | River Maun | 27 | 38 h 9m | 1.58 |
| Severn Trent Water | OXTON - SOUTHWELL ROAD (SSO) | Oxton Dumble | 7 | 36 h 26m | 1.5 |
| Severn Trent Water | BLIDWORTH - DALE LANE/BAULKER LANE (CSO) | Gw Via Infiltration System | 11 | 36 h 6m | 1.5 |
| Severn Trent Water | EDWINSTOWE - BOY LANE (CSO) | River Maun | 14 | 23 h 53m | 0.96 |
| Severn Trent Water | HUCKNALL - BATHS LANE (CSO) | Baker Lane Brook | 16 | 20 h 30m | 0.83 |
| Severn Trent Water | BOUGHTON STW (SSTO) | Boughton Dyke | 4 | 17 h 28m | 0.71 |
| Severn Trent Water | RAINWORTH STW (SSTO) | Rainworth Water | 4 | 17 h 8m | 0.71 |
| Severn Trent Water | BILSTHORPE STW (SSTO) | Rainworth Water | 4 | 13 h 38m | 0.54 |
| Severn Trent Water | EDWINSTOWE - FOURTH AVENUE (CSO) | River Maun | 6 | 9 h 38m | 0.38 |
| Severn Trent Water | RAINWORTH STW (CSO) | Rainworth Water | 3 | 7 h 30m | 0.29 |
| Severn Trent Water | HUCKNALL - STOREY GARDENS (CSO) | River Leen | 12 | 5 h 49m | 0.21 |
| Severn Trent Water | NEWSTEAD - STATION ROAD (CSO) | Newstead Brook | 11 | 5 h 43m | 0.21 |
| Severn Trent Water | HUCKNALL - STOREY GARDENS (CSO) | River Leen | 3 | 4 h 36m | 0.17 |
| Severn Trent Water | EDWINSTOWE - BOY LANE (CSO) | River Maun | 5 | 4 h 26m | 0.17 |
| Severn Trent Water | HUCKNALL - BATHS LANE (CSO) | Baker Lane Brook | 3 | 4 h 20m | 0.17 |
| Severn Trent Water | OXTON - SOUTHWELL ROAD (SSO) | Oxton Dumble | 1 | 3 h 55m | 0.12 |
| Severn Trent Water | BESTWOOD - OLD MILL CLOSE (CSO) | River Leen | 10 | 3 h 48m | 0.12 |
| Severn Trent Water | BLIDWORTH - DALE LANE/BAULKER LANE (CSO) | Gw Via Infiltration System | 2 | 2 h 36m | 0.08 |
| Severn Trent Water | NEWSTEAD - STATION ROAD (CSO) | Newstead Brook | 3 | 2 h 6m | 0.08 |
| Severn Trent Water | BESTWOOD - OLD MILL CLOSE (CSO) | River Leen | 1 | 0 h 50m | 0 |
| Severn Trent Water | OLLERTON - WELLOW ROAD (CSO) | Boughton Dyke | 3 | 0 h 45m | 0 |
| Severn Trent Water | HUCKNALL - NABBS LANE (CSO) | River Leen | 1 | 0 h 45m | 0 |
| Severn Trent Water | BLIDWORTH - DALE LANE/PETROL STATION (CSO) | Groundwater Via Infiltration | 1 | 0 h 8m | 0 |
| Severn Trent Water | OLLERTON - WELLOW ROAD (CSO) | Boughton Dyke | 1 | 0 h 5m | 0 |
| Severn Trent Water | BLIDWORTH - DALE LANE/PARK AVENUE (CSO) | Groundwater Via Infiltration | 0 | 0 h | 0 |
| Severn Trent Water | HUCKNALL - WATNALL ROAD (CSO) | River Leen | 0 | 0 h | 0 |
| Severn Trent Water | BLIDWORTH - DALE LANE/LYNDHURST AVE (CSO) | Groundwater Via Infiltration | 0 | 0 h | 0 |
| Severn Trent Water | BLIDWORTH - DALE LANE/PARK AVENUE (CSO) | Groundwater Via Infiltration | 0 | 0 h | 0 |
| Severn Trent Water | BLIDWORTH - DALE LANE/PETROL STATION (CSO) | Groundwater Via Infiltration | 0 | 0 h | 0 |
| Severn Trent Water | HUCKNALL - NABBS LANE (CSO) | River Leen | 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