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Forest of Dean - 2025 Sewage

Polluted by sewage 15,376 hours in 2025 - That's 1.78 years , monitoring offline 8,648 hours , potential overflows 294 hours

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

Which Year?

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Forest of Dean 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 - 2,790 hours , 234 potential
Feb - 1,454 hours , 50 potential
Mar - 73 hours , 1,355 offline
Apr - 189 hours , 138 offline
May - 15 hours , 561 offline
Jun - 173 hours , 109 offline
Jul - 24 hours , 218 offline
Aug - 30 hours , 295 offline
Sept - 477 hours , 9 potential
Oct - 374 hours , 317 offline
Nov - 4,493 hours , 0 potential
Dec - 5,280 hours , 558 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Severn Trent Water LYDNEY STW (SSTO) River Severn Estuary 165 1,435h 57m 38 h
Severn Trent Water BLAKENEY (STW) River Severn 118 1,397h 46m -
Severn Trent Water PITTS MILL STW (SSTO) Glynch Brook 68 1,343h 20m 0 h
Severn Trent Water LYDNEY - EAST MARSH (SSO) Lyd 76 861h 3m 81 h
Severn Trent Water LYDNEY STW (SSTO) River Severn Estuary 47 790h 2m -
Dwr Cymru Welsh Water St Briavels WwTW Storm Overflow Wye Estuary 95 721h 52m -
Severn Trent Water BLAKENEY (STW) River Severn 39 689h 15m -
Severn Trent Water BROADOAK STW (CSO) River Severn 64 653h 16m 6 h
Severn Trent Water PITTS MILL STW (SSTO) Glynch Brook 30 626h 21m -
Severn Trent Water DYMOCK STW (CSO) River Leadon 28 609h 25m 285 h
Dwr Cymru Welsh Water Newland WwTW Settled Storm Overflow River Wye 35 536h -
Severn Trent Water CINDERFORD - CRUMPMEADOW STW (SSTO) Cinderford Brook 35 505h 53m 113 h
Severn Trent Water ALVINGTON - ST ANNES WELL (CSO) Cone Brook 39 487h 54m 224 h
Severn Trent Water BROADOAK STW (CSO) River Severn 24 484h 46m -
Severn Trent Water BLAKENEY STW STAGE X SPS (CSO) River Severn 58 341h 9m 91 h
Dwr Cymru Welsh Water Ruardean WwTW Storm Overflow Unnamed Tribuatary of Lodgegrove Brook 30 326h 45m -
Dwr Cymru Welsh Water Sedbury Storm Overflow River Wye Estuary 50 289h 30m -
Severn Trent Water LONGHOPE STW (SSTO) Longhope Brook 19 280h 11m 0 h
Severn Trent Water LONGHOPE STW (SSTO) Longhope Brook 22 269h 58m 35 h
Severn Trent Water LYDNEY - EAST MARSH (SSO) Lyd 15 259h 31m -
Severn Trent Water OLDCROFT - OLD DAM ROAD (CSO) Plummers Brook 14 259h 26m -
Severn Trent Water OLDCROFT - OLD DAM ROAD (CSO) Plummers Brook 14 214h 58m 32 h
Severn Trent Water DYMOCK STW (CSO) River Leadon 9 172h 3m -
Severn Trent Water ALVINGTON - ST ANNES WELL (CSO) Cone Brook 14 167h 16m 495 h
Severn Trent Water HARTPURY - WATERSMEET (CSO) Colliers Brook 11 160h 11m -
Severn Trent Water WESTBURY-ON-SEVERN - CHURCH (CSO) Westbury Brook 16 150h 17m 50 h
Severn Trent Water BLAKENEY STW STAGE X SPS (CSO) River Severn 18 125h 37m -
Severn Trent Water YORKLEY SLADE (CSO) Plummer'S Brook 9 110h 29m 1,168 h
Severn Trent Water HARTPURY - WATERSMEET (CSO) Colliers Brook 9 105h 53m -
Dwr Cymru Welsh Water Lydbrook WwTW Storm Overflow River Wye 13 94h 45m -
Severn Trent Water RUSPIDGE - RAILWAY ROAD (CSO) Cinderford Brook 16 89h 22m 77 h
Dwr Cymru Welsh Water Joyford The Sinks Storm Overflow Unnamed Brook 7 84h 15m -
Dwr Cymru Welsh Water Wyebank Road Storm Overflow River Wye estuary 26 82h 28m -
Severn Trent Water WESTBURY-ON-SEVERN - CHURCH (CSO) Westbury Brook 10 68h 32m -
Severn Trent Water NEWENT STW (SSTO) Ell Brook 13 60h 27m 28 h
Dwr Cymru Welsh Water Newland WwTW No.2 Storm Overflow Valley Brook 19 59h 30m -
Severn Trent Water LYDNEY - CHURCH ROAD (CSO) River Lyd 41 54h 54m 303 h
Severn Trent Water BROADOAK (CSO) River Severn 7 49h 52m -
Severn Trent Water LYDNEY - CHURCH ROAD (CSO) River Lyd 14 46h 49m 12 h
Severn Trent Water BROADOAK (CSO) River Severn 5 44h 18m 61 h
Severn Trent Water HUNTLEY - ORCHARD WAY (CSO) River Leadon 16 32h 40m 111 h
Severn Trent Water CINDERFORD - VALLEY ROAD (CSO) Cinderford Brook 9 29h 27m 42 h
Severn Trent Water NEWNHAM - LOWER HIGH STREET PS (CSO) River Severn 11 18h 18m 1,342 h
Severn Trent Water NEWENT STW (SSTO) Ell Brook 4 18h 10m -
Severn Trent Water CINDERFORD - CRUMPMEADOW STW (SSTO) Cinderford Brook 2 17h 39m -
Severn Trent Water HUNTLEY - ORCHARD WAY (CSO) River Leadon 7 15h 38m 25 h
Severn Trent Water KEMPLEY - FISHPOOL (SSO) River Alne 3 15h 23m 344 h
Severn Trent Water KEMPLEY - FISHPOOL (SSO) River Alne 2 15h 19m -
Severn Trent Water LYDNEY - TUTNALLS ST/HAMS RD (CSO) River Roden 7 14h 36m 58 h
Severn Trent Water CINDERFORD - VALLEY ROAD (CSO) Cinderford Brook 5 11h 9m -
Severn Trent Water SOUDLEY - NR TRAMWAY ROAD (SSO) Cinderford Brook 2 10h 30m 602 h
Severn Trent Water LYDNEY - TUTNALLS ST/HAMS RD (CSO) River Roden 4 10h 9m -
Severn Trent Water BLAKENEY STW STAGE 1 SPS (CSO) River Severn 2 9h 37m 342 h
Severn Trent Water CINDERFORD - GREENWAY ROAD (CSO) Cinderford Brook 2 9h 31m -
Dwr Cymru Welsh Water Newland WwTW No1 Storm Overflow Valley Brook 3 9h 15m -
Severn Trent Water NEWENT - CLEEVE MILL LANE (CSO) Ell Brook 5 8h 18m 295 h
Dwr Cymru Welsh Water Speech House Road Broadwell Overflow Cannop Brook 3 6h 30m -
Severn Trent Water NEWENT - THE CROFT (CSO) Peacocks Brook 5 2h 17m 4 h
Dwr Cymru Welsh Water Lydbrook Storm Overflow Tributary of the River Wye 2 2h 15m -
Severn Trent Water SOUDLEY - NR TRAMWAY ROAD (SSO) Cinderford Brook 1 2h 7m -
Severn Trent Water MITCHELDEAN - VANTAGE POINT BV (CSO) Longhope Brook 3 1h 57m 752 h
Severn Trent Water NEWNHAM - LOWER HIGH STREET PS (CSO) River Severn 3 1h 45m -
Severn Trent Water BLAKENEY STW STAGE 1 SPS (CSO) River Severn 1 1h 21m -
Dwr Cymru Welsh Water Lydbrook Overflow River Wye 1 0h 30m -
Severn Trent Water MITCHELDEAN - VANTAGE POINT BV (CSO) Longhope Brook 1 0h 14m -
Severn Trent Water NEWENT - THE CROFT (CSO) Peacocks Brook 0 0h 86 h
Severn Trent Water CINDERFORD - GREENWAY ROAD (CSO) Cinderford Brook 0 0h -
Severn Trent Water ELLWOOD - HOLLY LANE (SSO) Dry Brook 0 0h -
Severn Trent Water CHURCHAM (CSO) Ley Brook 0 0h -
Severn Trent Water CHURCHAM (CSO) Ley Brook 0 0h 92 h
Severn Trent Water MAISEMORE - GLOUCESTER ROAD (CSO) Ullesthorpe Brook 0 0h 144 h
Severn Trent Water LITTLEDEAN STW (SSTO) Westbury Brook 0 0h -
Severn Trent Water NEWENT - CLEEVE MILL LANE (CSO) Ell Brook 0 0h -
Severn Trent Water LITTLE DRYBROOK (CSO) Dry Brook 0 0h -
Severn Trent Water RUSPIDGE - RAILWAY ROAD (CSO) Cinderford Brook 0 0h -
Severn Trent Water Unknown Unknown 0 0h -
Severn Trent Water LITTLE DRYBROOK (CSO) Dry Brook 0 0h 815 h
Severn Trent Water LITTLEDEAN STW (SSTO) Westbury Brook 0 0h 73 h
Severn Trent Water ELLWOOD - HOLLY LANE (SSO) Dry Brook 0 0h 704 h
Severn Trent Water MAISEMORE - GLOUCESTER ROAD (CSO) Ullesthorpe Brook 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

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.