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Sherwood Forest - 2025 Sewage

Polluted by sewage 1,226 hours in 2025 , monitoring offline 1,631 hours , potential overflows 38 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Sherwood Forest for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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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Daily Data

Jan - 313 hours , 2 potential
Feb - 22 hours , 0 potential
Mar - 10 hours , 99 offline
Apr - 0 hours
May - 9 hours , 135 offline
Jun - 3 hours , 138 offline
Jul - 35 hours , 186 offline
Aug - 2 hours , 107 offline
Sept - 92 hours , 81 offline
Oct - 31 hours , 35 potential
Nov - 434 hours , 219 offline
Dec - 269 hours , 6 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Severn Trent Water HUCKNALL - SHELTON AVENUE (CSO) River Leen 45 185h 18m -
Severn Trent Water EDWINSTOWE STW (SSTO) River Maun 48 157h 53m 12 h
Severn Trent Water HUCKNALL - SHELTON AVENUE (CSO) River Leen 19 134h 5m -
Severn Trent Water CALVERTON STW (SSTO) Grimesmoor Dyke 14 89h 38m 29 h
Severn Trent Water RAINWORTH STW (SSTO) Rainworth Water 18 84h 6m 125 h
Severn Trent Water BILSTHORPE STW (SSTO) Rainworth Water 10 69h 43m 11 h
Severn Trent Water CALVERTON STW (SSTO) Grimesmoor Dyke 7 68h 55m -
Severn Trent Water EDWINSTOWE STW (SSTO) River Maun 14 64h 43m -
Severn Trent Water BOUGHTON STW (SSTO) Boughton Dyke 7 64h 35m 30 h
Severn Trent Water RAINWORTH STW (CSO) Rainworth Water 17 43h 16m 531 h
Severn Trent Water EDWINSTOWE - FOURTH AVENUE (CSO) River Maun 27 38h 9m 29 h
Severn Trent Water OXTON - SOUTHWELL ROAD (SSO) Oxton Dumble 7 36h 26m -
Severn Trent Water BLIDWORTH - DALE LANE/BAULKER LANE (CSO) Gw Via Infiltration System 11 36h 6m 94 h
Severn Trent Water EDWINSTOWE - BOY LANE (CSO) River Maun 14 23h 53m -
Severn Trent Water HUCKNALL - BATHS LANE (CSO) Baker Lane Brook 16 20h 30m 146 h
Severn Trent Water BOUGHTON STW (SSTO) Boughton Dyke 4 17h 28m -
Severn Trent Water RAINWORTH STW (SSTO) Rainworth Water 4 17h 8m -
Severn Trent Water BILSTHORPE STW (SSTO) Rainworth Water 4 13h 38m -
Severn Trent Water EDWINSTOWE - FOURTH AVENUE (CSO) River Maun 6 9h 38m -
Severn Trent Water RAINWORTH STW (CSO) Rainworth Water 3 7h 30m -
Severn Trent Water HUCKNALL - STOREY GARDENS (CSO) River Leen 12 5h 49m 71 h
Severn Trent Water NEWSTEAD - STATION ROAD (CSO) Newstead Brook 11 5h 43m -
Severn Trent Water HUCKNALL - STOREY GARDENS (CSO) River Leen 3 4h 36m 6 h
Severn Trent Water EDWINSTOWE - BOY LANE (CSO) River Maun 5 4h 26m -
Severn Trent Water HUCKNALL - BATHS LANE (CSO) Baker Lane Brook 3 4h 20m -
Severn Trent Water BLIDWORTH - DALE LANE/LYNDHURST AVE (CSO) Groundwater Via Infiltration 1 4h 6m 35 h
Severn Trent Water OXTON - SOUTHWELL ROAD (SSO) Oxton Dumble 1 3h 55m 0 h
Severn Trent Water BESTWOOD - OLD MILL CLOSE (CSO) River Leen 10 3h 48m 125 h
Severn Trent Water BLIDWORTH - DALE LANE/BAULKER LANE (CSO) Gw Via Infiltration System 2 2h 36m -
Severn Trent Water NEWSTEAD - STATION ROAD (CSO) Newstead Brook 3 2h 6m -
Severn Trent Water BESTWOOD - OLD MILL CLOSE (CSO) River Leen 1 0h 50m -
Severn Trent Water OLLERTON - WELLOW ROAD (CSO) Boughton Dyke 3 0h 45m 6 h
Severn Trent Water HUCKNALL - NABBS LANE (CSO) River Leen 1 0h 45m 365 h
Severn Trent Water BLIDWORTH - DALE LANE/PETROL STATION (CSO) Groundwater Via Infiltration 1 0h 8m -
Severn Trent Water OLLERTON - WELLOW ROAD (CSO) Boughton Dyke 1 0h 5m -
Severn Trent Water HUCKNALL - NABBS LANE (CSO) River Leen 0 0h 47 h
Severn Trent Water BLIDWORTH - DALE LANE/LYNDHURST AVE (CSO) Groundwater Via Infiltration 0 0h -
Severn Trent Water BLIDWORTH - DALE LANE/PETROL STATION (CSO) Groundwater Via Infiltration 0 0h -
Severn Trent Water BLIDWORTH - DALE LANE/PARK AVENUE (CSO) Groundwater Via Infiltration 0 0h -
Severn Trent Water HUCKNALL - WATNALL ROAD (CSO) River Leen 0 0h -
Severn Trent Water BLIDWORTH - DALE LANE/PARK AVENUE (CSO) Groundwater Via Infiltration 0 0h -

Data Sources & Accuracy

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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.