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Polluted by sewage 9,479 hours in 2025 - That's 1.1 years
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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 Bolsover, 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 | WESTWOOD BROOK STW (SSTO) | Morton Brook | 59 | 981 h 47m | 40.88 |
| Severn Trent Water | OGSTON TREATMENT WORKS (CSO) | River Amber | 70 | 942 h 11m | 39.25 |
| Severn Trent Water | SOUTH NORMANTON STW 3DWF (SSTO) | Alfreton Brook | 51 | 925 h 3m | 38.54 |
| Severn Trent Water | WESSINGTON - BACK LANE (SSO) | River Amber | 39 | 874 h 20m | 36.42 |
| Severn Trent Water | WESSINGTON - BACK LANE (SSO) | River Amber | 48 | 802 h 43m | 33.42 |
| Severn Trent Water | SOUTH NORMANTON STW 3DWF (SSTO) | Alfreton Brook | 35 | 764 h 33m | 31.83 |
| Severn Trent Water | WESTWOOD BROOK STW (SSTO) | Morton Brook | 35 | 672 h 50m | 28 |
| Severn Trent Water | OGSTON TREATMENT WORKS (CSO) | River Amber | 33 | 571 h 45m | 23.79 |
| Severn Trent Water | SCARCLIFFE STW (SSTO) | River Poulter | 26 | 517 h 58m | 21.54 |
| Severn Trent Water | SCARCLIFFE STW (SSTO) | River Poulter | 35 | 335 h 39m | 13.96 |
| Severn Trent Water | CRESWELL (STW) | Millwood Brook | 45 | 248 h 20m | 10.33 |
| Severn Trent Water | SHIRLAND - HALLFIELD GATE (FOUL) (SSO) | Alfreton Brook | 22 | 227 h 18m | 9.46 |
| Severn Trent Water | ALFRETON STW (CSO) | Alfreton Brook | 44 | 217 h 59m | 9.04 |
| Severn Trent Water | BLACKWELL - GLOVES LANE (SSO) | Morton Brook | 23 | 212 h 22m | 8.83 |
| Severn Trent Water | ALFRETON STW (SSTO) | Alfreton Brook | 41 | 193 h 53m | 8.04 |
| Severn Trent Water | ALFRETON STW (CSO) | Alfreton Brook | 12 | 136 h 22m | 5.67 |
| Severn Trent Water | SOUTH NORMANTON - CARNFIELD (SSO) | Alfreton Brook | 15 | 101 h 20m | 4.21 |
| Severn Trent Water | TIBSHELF - CHESTERFIELD ROAD (SSO) | Westwood Brook | 19 | 100 h 50m | 4.17 |
| Severn Trent Water | CLOWNE (STW) INLET WORKS 3DWF | Millwood Brook | 13 | 82 h 19m | 3.42 |
| Severn Trent Water | WHITWELL STW (CSO) | Millwood Brook | 9 | 74 h 56m | 3.08 |
| Severn Trent Water | SOUTH NORMANTON - CARNFIELD (SSO) | Alfreton Brook | 11 | 62 h 13m | 2.58 |
| Severn Trent Water | CRESWELL (STW) | Millwood Brook | 13 | 58 h 42m | 2.42 |
| Severn Trent Water | SOUTH NORMANTON - HILL FIELDS (CSO) | River Erewash | 15 | 46 h 54m | 1.92 |
| Severn Trent Water | CLOWNE (STW) INLET WORKS 6DWF | Millwood Brook | 23 | 43 h 32m | 1.79 |
| Severn Trent Water | ALFRETON STW (SSTO) | Alfreton Brook | 10 | 42 h 34m | 1.75 |
| Severn Trent Water | TIBSHELF - CHESTERFIELD ROAD (SSO) | Westwood Brook | 12 | 41 h 4m | 1.71 |
| Severn Trent Water | PINXTON - STATION ROAD PS (CSO) | River Erewash | 16 | 33 h 19m | 1.38 |
| Severn Trent Water | HILCOTE - NEW LANE (SSO) | Normanton Brook | 5 | 32 h 38m | 1.33 |
| Severn Trent Water | ALFRETON - LYDFORD ROAD (CSO) | Alfreton Brook | 14 | 32 h 5m | 1.33 |
| Severn Trent Water | SOUTH NORMANTON - HILL FIELDS (CSO) | River Erewash | 9 | 11 h 51m | 0.46 |
| Severn Trent Water | SOUTH NORMANTON - BIRCHWOOD LANE (CSO) | River Erewash | 7 | 11 h 40m | 0.46 |
| Severn Trent Water | PINXTON - STATION ROAD PS (CSO) | River Erewash | 7 | 11 h 22m | 0.46 |
| Severn Trent Water | CLOWNE (STW) INLET WORKS 3DWF | Millwood Brook | 7 | 10 h 55m | 0.42 |
| Severn Trent Water | SHIRLAND - HALLFIELD GATE (FOUL) (SSO) | Alfreton Brook | 5 | 10 h 18m | 0.42 |
| Severn Trent Water | BLACKWELL - GLOVES LANE (SSO) | Morton Brook | 2 | 9 h 7m | 0.38 |
| Severn Trent Water | CLOWNE (STW) INLET WORKS 6DWF | Millwood Brook | 6 | 6 h 49m | 0.25 |
| Severn Trent Water | WHITWELL STW (SSTO) | Millwood Brook | 11 | 6 h 42m | 0.25 |
| Severn Trent Water | WHITWELL STW (CSO) | Millwood Brook | 1 | 5 h 46m | 0.21 |
| Severn Trent Water | HILCOTE - NEW LANE (SSO) | Normanton Brook | 2 | 5 h 43m | 0.21 |
| Severn Trent Water | TIBSHELF - HIGH ST/BROOKE ST (CSO) | Morton Brook\N | 7 | 5 h 12m | 0.21 |
| Severn Trent Water | MANSFIELD - OXCLOSE LANE (SSO) | River Meden | 4 | 1 h 32m | 0.04 |
| Severn Trent Water | SOUTH NORMANTON - BIRCHWOOD LANE (CSO) | River Erewash | 3 | 1 h 19m | 0.04 |
| Severn Trent Water | WESSINGTON - MATLOCK ROAD (CSO) | Birches Brook | 1 | 1 h 15m | 0.04 |
| Severn Trent Water | TIBSHELF - HIGH ST/FIVE PITS TRAIL (SO) | Westwood/Normanton Brook | 1 | 0 h 55m | 0 |
| Severn Trent Water | PLEASLEY - WILKINSONS CLOSE X (CSO) | River Meden | 1 | 0 h 52m | 0 |
| Severn Trent Water | TIBSHELF - HIGH ST/BROOKE ST (CSO) | Morton Brook\N | 1 | 0 h 21m | 0 |
| Severn Trent Water | SHIREBROOK - PORTLAND DRIVE (CSO) | River Meden | 1 | 0 h 16m | 0 |
| Severn Trent Water | MANSFIELD - OXCLOSE LANE (SSO) | River Meden | 0 | 0 h | 0 |
| Severn Trent Water | SHIREBROOK - PORTLAND DRIVE (CSO) | River Meden | 0 | 0 h | 0 |
| Severn Trent Water | ALFRETON - LYDFORD ROAD (CSO) | Alfreton Brook | 0 | 0 h | 0 |
| Severn Trent Water | TIBSHELF - DOE HILL LANE/SPA CROFT (CSO) | Westwood/Normanton Brook | 0 | 0 h | 0 |
| Severn Trent Water | MORTON - STATION ROAD (SSO) | Westwood Brook | 0 | 0 h | 0 |
| Severn Trent Water | MORTON - STATION ROAD (SSO) | Westwood Brook | 0 | 0 h | 0 |
| Severn Trent Water | PLEASLEY - WILKINSONS CLOSE X (CSO) | River Meden | 0 | 0 h | 0 |
| Severn Trent Water | TIBSHELF - DOE HILL LANE/SPA CROFT (CSO) | Westwood/Normanton Brook | 0 | 0 h | 0 |
| Severn Trent Water | STONEBROOM INDUSTRIAL ESTATE (CSO) | Morton Brook | 0 | 0 h | 0 |
| Severn Trent Water | SOUTH NORMANTON - WATER LANE (CSO) | Normanton Brook | 0 | 0 h | 0 |
| Severn Trent Water | WHITWELL STW (SSTO) | Millwood Brook | 0 | 0 h | 0 |
| Severn Trent Water | WESSINGTON - MATLOCK ROAD (CSO) | Birches Brook | 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