Rossendale and Darwen - Live Sewage

Polluted by sewage 1,784 hours in 2026 , monitoring offline 721 hours , potential overflows 246 hours so far..

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

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Rossendale and Darwen so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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.

Totals for Rossendale and Darwen in 2026

Sewage1,784 hours
Monitoring offline721 hours
Potential pollution246 hours
Storm overflows134

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Daily Data

Jan - 329 hours , 207 potential
Feb - 315 hours , 1 potential
Mar - 156 hours , 0 potential
Apr - 15 hours , 25 offline
May - 22 hours , 8 offline
Jun - 0 hours
Jul - 0 hours , 416 offline
Aug - 70 hours , 91 offline
Sept - 139 hours , 0 potential
Oct - 735 hours , 37 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Bolton Road/ Astley Street CSO Kebbs Brook, Riv Darwen 19 382h 59m 33 h
United Utilities ROSSENDALE WwTW River Irwell 31 294h 30m -
United Utilities The Glen CSO River Irwell 67 287h 7m 6 h
United Utilities Lower Eccleshill Road CSO River Darwen 21 124h 41m 2 h
United Utilities Bolton Road CSO Bradshaw Brook 28 93h 16m -
United Utilities Burnley Road East/Booth Street CSO Whitewell Brook 5 78h 14m 202 h
United Utilities 100Metres East of No. XX Eastgate CSO River Spodden 29 78h 6m -
United Utilities NEWCHURCH ROAD / BROOKS STREET CSO River Irwell 31 45h 54m 1 h
United Utilities ANYON STREET / LAUREL AVENUE CSO River Darwen 41 45h 16m 2 h
United Utilities 143 Burnley Road East CSO Whitewell Brook 21 39h 2m 24 h
United Utilities Bank Street CSO Limy Water R Irwell 15 29h 50m -
United Utilities Newchurch Road CSO River Irwell 4 28h 29m -
United Utilities New Hall Hey Road CSO River Irwell 12 24h 32m 0 h
United Utilities Clarence Street CSO River Darwen 17 24h 14m -
United Utilities HIGHER PERRY STREET/BACK LAUREL CSO River Darwen 35 24h 6m 5 h
United Utilities Helmshore Caravan Park combined sewer overflow Swinnel Brook 15 22h 24m -
United Utilities Bacup Road/Markross Street CSO River Irwell 14 21h 42m -
United Utilities 295 BACUP ROAD CSO River Irwell 10 19h 2m -
United Utilities NEWCHURCH ROAD / WESLEY PLACE CSO River Irwell 14 18h 53m -
United Utilities Balle Street CSO No.X River Darwen 20 14h 38m -
United Utilities Rushbed SSO Limy Water 8 12h 52m -
United Utilities Highfield Road CSO River Irwell 8 12h 38m -
United Utilities COTTON HALL STREET CSO River Darwen 25 11h 54m 7 h
United Utilities OPPOSITE 709 BACUP ROAD CSO River Irwell 3 10h 42m 1 h
United Utilities BALLE STREET / HILTON STREET CSO River Darwen 20 10h 18m 3 h
United Utilities Grimshaw Street Combined Sewer Overflow (Site ID 05033) (BBN0107) River Darwen 11 5h 42m -
United Utilities Sudell Road CSO River Darwen 8 4h 44m -
United Utilities Cowm Park Way South River Spodden 1 3h 26m -
United Utilities Lee Road CSO River Irwell 4 3h 4m -
United Utilities BURNLEY ROAD (BACUP) CSO River Irwell 1 2h 8m 42 h
United Utilities Hindle Street CSO River Darwen Via Sws 6 1h 48m -
United Utilities Burnley Road East/Shawclough Road CSO Whitewll Brook 1 1h 24m -
United Utilities BROADHEAD ROAD CSO Quarlton Brook 6 1h 10m -
United Utilities 28 Tythebarn Street CSO River Darwen 4 1h 5m 505 h
United Utilities CHURCH STREET / PARLIAMENT STREEET CSO Culverted Section River Darwen 5 1h 2m 2 h
United Utilities Hammerton Street/Stanley Street CSO River Irwell 2 0h 42m 0 h
United Utilities Cranberry Lane CSO River Darwen 3 0h 42m -
United Utilities WATERBARN LANE CSO River Irwell 1 0h 40m 1 h
United Utilities Station Road (Whitworth) CSO River Spodden 3 0h 34m -
United Utilities Burnley Road/Middlegate CSO Limy Water Irwell 1 0h 12m -
United Utilities Burnley Road East/Whitewall Bottom CSO Whitewell Brook 1 0h 12m -
United Utilities BELMONT WwTW Eagley Brook 1 0h 11m 0 h
United Utilities ROCKCLIFFE ROAD / RIVER STREET CSO River Irwell 1 0h 6m -
United Utilities NEWCHURCH ROAD / WESLEY PLACE CSO River Irwell 0 0h -
United Utilities Burnley Road East/Townley Arms CSO Whitewell Brook 0 0h -
United Utilities Burnley Road/Middlegate CSO Limy Water Irwell 0 0h -
United Utilities Rushbed SSO Limy Water 0 0h -
United Utilities NEWCHURCH ROAD / BROOKS STREET CSO River Irwell 0 0h -
United Utilities Cowm Park Way South River Spodden 0 0h -
United Utilities Bolton Road CSO River Darwen 0 0h -
United Utilities Cranberry Lane CSO River Darwen 0 0h -
United Utilities NEWCHURCH ROAD (Bacup) CSO River Irwell 0 0h -
United Utilities New Hall Hey Bridge CSO River Irwell 0 0h -
United Utilities Kay Street River Darwen 0 0h -
United Utilities Irwell Vale PS River Ogden 0 0h 15 h
United Utilities Waterside CSO Waterside Brook 0 0h -
United Utilities The Glen CSO River Irwell 0 0h -
United Utilities Hindle Street CSO River Darwen Via Sws 0 0h -
United Utilities BURNLEY ROAD (BACUP) CSO River Irwell 0 0h -
United Utilities Bolton Road CSO River Darwen 0 0h -
United Utilities Blackwood Road River Irwell 0 0h -
United Utilities COTTON HALL STREET CSO River Darwen 0 0h -
United Utilities Vale Street River Darwen 0 0h -
United Utilities ROCKCLIFFE ROAD / RIVER STREET CSO River Irwell 0 0h -
United Utilities 876 Burnley Road East CSO Whitewell Brook 0 0h -
United Utilities 143 Burnley Road East CSO Whitewell Brook 0 0h -
United Utilities BROADHEAD ROAD CSO Quarlton Brook 0 0h -
United Utilities Bolton Road/ Astley Street CSO Kebbs Brook, Riv Darwen 0 0h -
United Utilities WELLINGTON HOTEL CSO Culverted River Irwell 0 0h -
United Utilities Bank Street CSO Limy Water R Irwell 0 0h -
United Utilities CHURCH STREET / PARLIAMENT STREEET CSO Culverted Section River Darwen 0 0h -
United Utilities Blackwood Road River Irwell 0 0h -
United Utilities WATERBARN LANE CSO River Irwell 0 0h -
United Utilities 876 Burnley Road East CSO Whitewell Brook 0 0h -
United Utilities Balle Street CSO No.X River Darwen 0 0h -
United Utilities Woodvale Flats combined sewer overflow (059AF) (BBN0151) River Darwen 0 0h -
United Utilities REDEARTH ROAD / SUDELL ROAD CSO River Darwen 0 0h -
United Utilities SOUTH STREET / PICKUP STREET CSO River Irwell 0 0h -
United Utilities 28 Tythebarn Street CSO River Darwen 0 0h -
United Utilities Bolton Road CSO River Darwen 0 0h -
United Utilities Highfield Road CSO River Irwell 0 0h -
United Utilities Sudellside Street CSO River Darwen 0 0h -
United Utilities Belgrave Road CSO River Darwen 0 0h -
United Utilities BALLE STREET / HILTON STREET CSO River Darwen 0 0h -
United Utilities Woodvale Flats combined sewer overflow (059AF) (BBN0151) River Darwen 0 0h -
United Utilities BELMONT WwTW Eagley Brook 0 0h -
United Utilities Sudell Road CSO River Darwen 0 0h -
United Utilities New Hall Hey Bridge CSO River Irwell 0 0h -
United Utilities OPPOSITE 709 BACUP ROAD CSO River Irwell 0 0h -
United Utilities Lee Road CSO River Irwell 0 0h -
United Utilities Cowpe Road SSO River Irwell 0 0h -
United Utilities Lower Eccleshill Road CSO River Darwen 0 0h -
United Utilities Burnley Road East/Booth Street CSO Whitewell Brook 0 0h -
United Utilities Newchurch Road CSO River Irwell 0 0h -
United Utilities Bacup Road/Markross Street CSO River Irwell 0 0h -
United Utilities Cowpe Road SSO River Irwell 0 0h -
United Utilities New Hall Hey Road CSO River Irwell 0 0h -
United Utilities Burnley Road East/Whitewall Bottom CSO Whitewell Brook 0 0h -
United Utilities Greave Clough Drive CSO Greave Clough Via Sws 0 0h -
United Utilities RAILWAY ROAD / SOUTH STREET CSO Clvrtd Section Of River Darwen 0 0h -
United Utilities Clarence Street CSO River Darwen 0 0h -
United Utilities SOUTH STREET / PICKUP STREET CSO River Irwell 0 0h -
United Utilities Boothfold Bridge CSO (369DI) Whitewell Brook 0 0h -
United Utilities Footpath Near Cross Street CSO River Darwen 0 0h -
United Utilities Belgrave Road CSO River Darwen 0 0h -
United Utilities Bolton Road CSO River Darwen 0 0h -
United Utilities Helmshore Caravan Park combined sewer overflow Swinnel Brook 0 0h -
United Utilities 100Metres East of No. XX Eastgate CSO River Spodden 0 0h -
United Utilities NEWCHURCH ROAD (Bacup) CSO River Irwell 0 0h -
United Utilities Footpath Near Cross Street CSO River Darwen 0 0h -
United Utilities Greave Clough Drive CSO Greave Clough Via Sws 0 0h -
United Utilities TONG LANE / REED STREET CSO Gleave Clough Brook 0 0h -
United Utilities ANYON STREET / LAUREL AVENUE CSO River Darwen 0 0h -
United Utilities Burnley Road East/Townley Arms CSO Whitewell Brook 0 0h -
United Utilities Boothfold Bridge CSO (369DI) Whitewell Brook 0 0h 1 h
United Utilities Queen's Road CSO River Darwen 0 0h -
United Utilities WELLINGTON HOTEL CSO Culverted River Irwell 0 0h -
United Utilities HIGHER PERRY STREET/BACK LAUREL CSO River Darwen 0 0h -
United Utilities Grimshaw Street Combined Sewer Overflow (Site ID 05033) (BBN0107) River Darwen 0 0h -
United Utilities TONG LANE / REED STREET CSO Gleave Clough Brook 0 0h -
United Utilities 295 BACUP ROAD CSO River Irwell 0 0h -
United Utilities Burnley Road East/Shawclough Road CSO Whitewll Brook 0 0h -
United Utilities Kay Street River Darwen 0 0h -
United Utilities Queen's Road CSO River Darwen 0 0h -
United Utilities RAILWAY ROAD / SOUTH STREET CSO Clvrtd Section Of River Darwen 0 0h -
United Utilities Vale Street River Darwen 0 0h 107 h
United Utilities REDEARTH ROAD / SUDELL ROAD CSO River Darwen 0 0h -
United Utilities Sudellside Street CSO River Darwen 0 0h -
United Utilities Station Road (Whitworth) CSO River Spodden 0 0h -
United Utilities Waterside CSO Waterside Brook 0 0h -
United Utilities Irwell Vale PS River Ogden 0 0h -
United Utilities ROSSENDALE WwTW River Irwell 0 0h -
United Utilities Hammerton Street/Stanley Street CSO River Irwell 0 0h -
United Utilities Bolton Road CSO Bradshaw 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

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.