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Bolton (Bolton)

Polluted by sewage 1,640 times in 2025 lasting 4,824 hours

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Totals for Bolton (Bolton) in 2025

59 Sites polluted by United Utilities

1,640 sewage dumps

4,824 hours duration

That's 6.7 months. On average 4.5 times a day

Change Over Time

Constituency for Bolton (Bolton)

Nearby Constituencies

Waterways in Bolton (Bolton)

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Bolton (Bolton) 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 place 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 Croal	HACKEN WORKS CSO	100	506	99.6
United Utilities	Eagley Brook	BIRTENSHAW FARM CSO	98	483	99.9
United Utilities	River Croal	SPA ROAD CSO 07017	45	441	99.6
United Utilities	River Croal	DRAGONS TOOTH CSO	55	334	100
United Utilities	Croal Minor	91 MANCHESTER ROAD CSO 072GO	114	302	93.2
United Utilities	Middle Brook	CHORLEY NEW/DEVONSHIRE ROAD CSO	73	257	59.8
United Utilities	Tanner Hole Brook	ADELAIDE STREET CSO	59	220	99.8
United Utilities	Eagley Brook	DUNSCAR BRIDGE CSO	45	217	100
United Utilities	Astley Brook	ALBION TERRACE CSO 071BD	65	205	99.9
United Utilities	Astley Brook	ASTLEY BRIDGE CSO 071WP	47	182	100
United Utilities	River Tonge	WATERS MEETING ROAD CSO 073KZ	55	166	99.3
United Utilities	Middle Brook	NO 76 MIDDLE BROOK CSO	94	160	96.1
United Utilities	Captains Clough Brook	CHORLEY OLD CHORLEY NEW RD CSO	73	135	98
United Utilities	Cvrt Sec Middle Brook R R	BRIDGE STREET BOW STREET CSO	63	119	99.8
United Utilities	Jenny Beck Rvr Croal	WESTON ST VIKING ST CSO BOL0115	50	98	99.9
United Utilities	Croal Minor	CROWN STREET CSO 071QI	78	97	99.6
United Utilities	Bradshaw Brook	ROYAL OAK CSO 07039	25	90	100
United Utilities	Eagley Brook	OLD EAGLEY CSO 073DM	35	89	92.5
United Utilities	Bradshaw Brook	THICKETFORD CSO 072UX	30	81	99.8
United Utilities	Jenny Beck, Rv Croal	RISHTON LANE/WESTON STREET CSO	41	73	99.9
United Utilities	Bessy Brook Via Sws	REGENT ROAD (BOLTON) CSO	25	58	91
United Utilities	Middle Brook	LADYBRIDGE LANE CSO	22	57	99.7
United Utilities	River Tonge	TURNER BRIDGE CSO	42	36	100
United Utilities	Captains Clough	THOMPSON ROAD CSO	8	34	65.9
United Utilities	River Tonge	ZULU SREET CSO 07032	25	27	100
United Utilities	River Tonge	HAPATIA STREET CSO 074EA	18	25	83
United Utilities	Middle Brook	BLACKSHAW LANE CSO 072FW	15	24	99.3
United Utilities	Clvrt Of Captains Clough Brook	VALLETS LANE CSO	7	22	99.7
United Utilities	Astley Brook	GISBURN AVENUE CSO 071VO	15	22	100
United Utilities	River Tonge	TONGE MOOR RD CSO	11	21	84.9
United Utilities	Middle Brook	CHORLEY NEW ROAD CSO 071JS	12	19	86
United Utilities	Croal Minor	ORLANDO STREET CSO 078J3	12	19	100
United Utilities	River Croal	SPRINGFIELD TANK CSO	10	19	99.3
United Utilities	Dean Brook	BROOK DEANS CLOSE CSO	6	16	99.6
United Utilities	Middle Brook	LADYBRIDGE LANE CSO	4	16	99.6
United Utilities	Clvrt Sec River Croal Minor	CHURCH WHARFE CSO 073BW	21	12	99.9
United Utilities	Astley Brook	MOSS BANK WAY/CHIPPINGS W	8	12	98.9
United Utilities	River Tonge	HAG END BROW CSO	19	12	99.1
United Utilities	River Croal	HALL LANE	9	10	100
United Utilities	Bradshaw Brook	OAKENBOTTOM ROAD CSO 072IS	5	10	100
United Utilities	River Croal	STPETERS WAY/SPRINGFIELD IND ES CSO	18	10	100
United Utilities	Unknown	ST JOHNS RD	2	10	99.9
United Utilities	Eagley Brook	HOUGH LANE EAGLEY BRIDGE CSO 073DL	10	9	99.7
United Utilities	Middle Brook	ALBERT ROAD CSO	25	9	99.5
United Utilities	River Croal	WALKER STREET CSO	7	9	100
United Utilities	Blackshaw Brook	DARCY LEVER OLD HALL CSO	10	8	95.6
United Utilities	Jenny Beck Rvr Croal	LEVER STREET NO 5 CSO 078CD	4	4	99.9
United Utilities	River Croal	FERN STREET CSO (078J3)	8	3	100
United Utilities	River Croal	WHITE LION BROW CSO	1	2	99.8
United Utilities	Dean Brook	D/S 56 BARROW BRIDGE ROAD CSO	2	2	100
United Utilities	A Culverted Section Jenny Beck	LEVER STREET NO1 CSO	5	1	82
United Utilities	Croal Minor	MANOR STREET BOW STREET CSO 072ES	1	1	100
United Utilities	Astley Brook	LIGHTBOUNDS RD LVAINE AVE CSO 072CO	2	0	96.9
United Utilities	River Croal	BRIDGEMAN PARK CSO	1	0	88.8
United Utilities	River Croal	WATER STREET CSO 07020	1	0	100
United Utilities	Jenny Beck Culvert River Croal	CROFT LN MANCHESTER RD CSO BOL0206	1	0	98.5
United Utilities	Eagley Brook	SHARPLES AVE EASTGROVE AVE CSO 071S	1	0	98.8
United Utilities	River Tonge	BLACKBURN RD HALLIWELL RD CSO 071EU	1	0	99.9
United Utilities	Queens Park Gilnow Park Pond	MORNINGTON RD BACK LINCOLN RD CSO	1	0	97.2
United Utilities	River Croal	EDITH STREET CSO 078NL	0	0	99.9
United Utilities	River Tonge	ENTWISTLE ST CSO	0	0	76.4
United Utilities	Eagley Brook	HALL COPPICE SSO	0	0	99.4
United Utilities	Eagley Brook	HALL I TH WOOD CSO 071XP	0	0	100
United Utilities	Bradshaw Brook	HIND STREET CSO	0	0	100
United Utilities	River Croal	KING STREET CSO 072BV	0	0	93.6
United Utilities	Bradshaw Brook	LONGSIGHT PARK CSO 07038	0	0	97.6
United Utilities	Eagley Brook	PLAYFAIR ST	0	0	99.4
United Utilities	River Tonge	TONGE VALLEY CSO	0	0	77.1
United Utilities	Jenny Beck	BRIDGEMAN ST HIGHER SWAN LANE CSO	0	0	94.4
United Utilities	Middle Brook Via Sws	CALEDONIA ST HIBERNIA ST CSO 071IB	0	0	94.3
United Utilities	Croal Minor	CHURCH BANK (SIDE OF VIADUCT) CSO	0	0	96.3
United Utilities	Croal Minor	CHURCH BANK RAILWAY VIADUCT CSO	0	0	96.9

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

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