Top of the Poops | Constituency Sewage Map | Rossendale and Darwen

It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry, then sign the petition to bring water back to public ownership.

Select Another Constituency

Constituency

Select the constituency from the drop-down

✔ means we have live data (𝑥 if not)

Live data for Rossendale and Darwen in 2026

So far this year (as of 18 May 2026, 12:00) there has been 839 hours of sewage overflows, from 134 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s

Totals for Rossendale and Darwen in 2025

52 Sites polluted by United Utilities

1,286 sewage dumps

5,574 hours duration

That's 7.74 months. On average 3.5 times a day

Change Over Time

Take Action

Your local MP is Andy MacNae (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK

Constituencies near Rossendale and Darwen

Waterways in Rossendale and Darwen

We need your support!

Please consider a one-off or small recurring donation. We need your help to keep this site going.

Donate Now

Pollution Summary 2025

Here are all the reported sewage overflow totals for Rossendale and Darwen in 2025. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
United Utilities	River Irwell	THE GLEN COMBINED SEWER OVERFLOW	139	1,306	100
United Utilities	River Irwell	ROSSENDALE WWTW	84	1,204	100
United Utilities	River Irwell	295 BACUP ROAD CSO	73	458	99.5
United Utilities	Unknown	BOLTON ROAD SSO	49	298	100
United Utilities	River Spodden	WHITWORTH CSO	53	269	98.8
United Utilities	River Darwen	DARWEN WWTW	39	266	100
United Utilities	River Irwell	NEWCHURCH ROAD CSO (36013)	27	225	100
United Utilities	River Irwell	BACUP ROAD/FALBARN FOLD CSO	49	168	100
United Utilities	River Irwell	NEWCHURCH ROAD/BROOKS STREET CSO	58	151	88.6
United Utilities	Limy Water R Irwell	BANK ST COMBINED SEWER OVERFLOW	45	143	99.8
United Utilities	River Irwell	NEW HALL HEY ROAD CSO	30	111	99.9
United Utilities	River Darwen	ANYON STREET/LAUREL AVE CSO	63	107	99.4
United Utilities	Whitewell Brook	143 BURNLEY ROAD EAST CSO	28	106	93.7
United Utilities	Swinnel Brook	HELMSHORE CARAVAN PARK CSO	48	105	99.4
United Utilities	River Darwen	CLARENCE STREET CSO	42	69	99.2
United Utilities	River Irwell	NEWCHURCH ROAD/WESLEY PLACE CSO	32	63	99.9
United Utilities	Limy Water	RUSHBED SSO	23	62	91.8
United Utilities	Culverted Section River Darwen	BALLE STREET HILTON STREET CSO	56	61	100
United Utilities	River Darwen	HIGHER PERRY ST/BLACK LAUREL ST CSO	68	61	99.6
United Utilities	Waterside Brook	WATERSIDE CSO 052Z1	9	37	100
United Utilities	River Irwell	HIGHFIELD ROAD CSO	13	37	63.7
United Utilities	River Darwen	BALLE STREET HILTON STREET CSO	46	27	96.3
United Utilities	River Darwen	COTTON HALL STREET CSO	43	26	99.8
United Utilities	River Darwen	GRIMSHAW STREET CSO	20	25	99.8
United Utilities	River Darwen	SUDELL ROAD CSO	26	25	99.9
United Utilities	River Irwell	WATERBARN LANE CSO	7	21	99.8
United Utilities	Whitewell Brook	BURNLEY RD E/BOOTH ST CSO	13	14	99.9
United Utilities	River Darwen Via Sws	HINDLE STREET CSO	14	14	99.9
United Utilities	River Spodden	WHITWORTH SSO	3	12	71.1
United Utilities	River Ogden	IRWELL VALE PS	8	11	94.9
United Utilities	Quarlton Brook	BROADHEAD ROAD CSO 051FX	7	9	95.7
United Utilities	River Irwell	HAMMERTONSTREET/STANLEY STREET CSO	9	8	99.9
United Utilities	River Irwell	BURNLEY ROAD BACUP CSO	1	8	98.9
United Utilities	River Irwell	NEWCHURCH ROAD BACUP CSO	4	7	96.2
United Utilities	River Spodden	STATION ROAD (WHITWORTH) CSO	2	7	100
United Utilities	Unknown	COWDE RD BR.	4	6	99.7
United Utilities	River Darwen	CRANBERRY LANE CSO	2	5	96.8
United Utilities	Whitewll Brook	BURNLEY ROAD EAST/SHAWCLOUGH CSO	2	3	100
United Utilities	River Irwell	709 BACUP ROAD CSO	2	3	100
United Utilities	Kebbs Brook, Riv Darwen	BOLTON ROAD/ASTLEY STREET CSO	9	3	100
United Utilities	Whitewell Brook	BURNLEY RD E /WHITEWELL BOTTOM CSO	3	3	100
United Utilities	River Irwell	BLACKWOOD ROAD CSO	2	3	95.2
United Utilities	Culverted Section River Darwen	CHURCH STREET/PARLIAMENT STREET CSO	7	1	99.9
United Utilities	River Darwen	BOLTON ROAD CSO	5	1	99.1
United Utilities	River Irwell	LEE ROAD CSO (369BA)	1	1	99.9
United Utilities	River Darwen	REDEARTH ROAD/SUDELL ROAD CSO	3	0	100
United Utilities	River Irwell	ROCKLIFFE ROAD/RIVER STREET CSO	3	0	99.9
United Utilities	River Irwell	SOUTH STREET/PICKUP STREET CSO	4	0	97.5
United Utilities	Eagley Brook	BELMONT WWTW	2	0	100
United Utilities	River Darwen	FOOTPATH NR CROSS ST CSO	3	0	100
United Utilities	Culverted Langwood Brook	MANCHESTER RD CSO (363F2)	2	0	99.9
United Utilities	River Darwen	VALE STREET	1	0	91.5
United Utilities	Whitewell Brook	876 BURNLEY RD EAST CSO	0	0	100
United Utilities	River Darwen	BELGRAVE ROAD CSO	0	0	100
United Utilities	River Darwen	BOLTON ROAD CSO	0	0	100
United Utilities	Limy Water Irwell	BURNLEY RD/MIDDLEGATE CSO	0	0	93.5
United Utilities	Whitewell Brook	BURNLEY ROAD EAST/TOWNLEY ARMS CSO	0	0	100
United Utilities	Greave Clough Via Sws	GREAVE CLOUGH DRIVE CSO	0	0	98.1
United Utilities	River Darwen	KAY STREET CSO	0	0	99.8
United Utilities	River Irwell	NEW HALL HEY BRIDGE CSO	0	0	100
United Utilities	River Darwen	QUEENS ROAD (DARWEN) CSO	0	0	95.4
United Utilities	Clvrtd Section Of River Darwen	RAILWAY ROAD/SOUTH STREET CSO	0	0	92.2
United Utilities	River Darwen	SUDELLSIDE STREET	0	0	89.2
United Utilities	Gleave Clough Brook	TONG LANE/REED STREET CSO	0	0	100
United Utilities	Culverted River Irwell	WELLINGTON HOTEL CSO	0	0	100
United Utilities	River Darwen	WOODVALE FLATS CSO	0	0	99.6

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.

Analysing sewage pollution by the Water Industry

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can

Yes! Support TOTP!

© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

Please don't scrape these pages - we can maybe share our data with you