Top of the Poops | Constituency Sewage Map - 2025 Data| Ashton-under-Lyne

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Ashton-under-Lyne 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.

Totals for Ashton-under-Lyne in 2025

Sewage3,433 hours

Monitoring offline4,993 hours

Potential pollution2,673 hours

Storm overflows56

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Constituencies near Ashton-under-Lyne

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
United Utilities	ASHTON-UNDER-LYNE WwTW	River Tame	30	372h 47m	323 h
United Utilities	DUKINFIELD WwTW	River Tame	38	318h 14m	6 h
United Utilities	DUKINFIELD WwTW	River Tame	20	247h 58m	-
United Utilities	ASHTON-UNDER-LYNE WwTW	River Tame	28	207h 1m	26 h
United Utilities	Clayton Bridge CSO	River Medlock	38	175h 16m	-
United Utilities	Broomstair Road CSO	River Tame	27	166h	-
United Utilities	Turner Lane/Alexandra Road CSO	River Tame	55	160h 14m	0 h
United Utilities	Wharf Street CSO	River Mersey	46	151h 24m	-
United Utilities	DUKINFIELD WwTW	River Tame	42	148h 47m	709 h
United Utilities	ASHTON-UNDER-LYNE WwTW	River Tame	13	138h 16m	-
United Utilities	ASHTON-UNDER-LYNE WwTW	River Tame	15	101h 51m	-
United Utilities	Broadoak/Lyndhurst Avenue CSO	Taunton	41	101h 51m	-
United Utilities	Pottinger Street/Oxford Street CSO	River Tame	43	97h 1m	0 h
United Utilities	Lower Wharf Street/Scotland Street CSO	River Tame	44	92h 35m	-
United Utilities	Newmarket Road PS	Taunton Brook, Medlock	25	84h 38m	-
United Utilities	250 metres d/s Ashton Road (Bardsley PS) CSO	River Medlock	10	81h 36m	4,102 h
United Utilities	Chappell Road CSO	Lumb Brook	39	80h 50m	-
United Utilities	Clayton Bridge CSO	River Medlock	15	68h 6m	-
United Utilities	LOWER WHARF STREET CSO	River Tame	45	68h 4m	37 h
United Utilities	Lumb Lane (Audenshaw) CSO and Detention Tank	Carr Brook Via Sws	10	63h 4m	-
United Utilities	Broomstair Road CSO	River Tame	13	57h 38m	-
United Utilities	Wharf Street CSO	River Mersey	12	51h 24m	-
United Utilities	Turner Lane/Alexandra Road CSO	River Tame	14	40h 52m	-
United Utilities	Edward Street (Dunkinfield) CSO	River Tame Via Sws	25	35h 42m	26 h
United Utilities	Coal Pit Lane CSO	Kebbs Brook, Riv Darwen	17	35h 34m	-
United Utilities	DUKINFIELD WwTW	River Tame	10	35h 33m	84 h
United Utilities	LOWER WHARF STREET CSO	River Tame	15	35h	-
United Utilities	Broadoak/Lyndhurst Avenue CSO	Taunton	9	31h 29m	-
United Utilities	Lower Wharf Street/Scotland Street CSO	River Tame	8	26h 26m	-
United Utilities	Chappell Road CSO	Lumb Brook	9	24h 10m	-
United Utilities	Pottinger Street/Oxford Street CSO	River Tame	9	22h 47m	0 h
United Utilities	Gambrel Bank Road CSO	Downshaw Brook	16	21h 40m	35 h
United Utilities	Newmarket Road PS	Taunton Brook, Medlock	6	20h 14m	-
United Utilities	Lumb Lane (Audenshaw) CSO and Detention Tank	Carr Brook Via Sws	1	10h 16m	-
United Utilities	Hathershaw Playing Field	River Medlock	4	10h 16m	-
United Utilities	Medlock Sports Centre CSO	Lumb Brook Via Surface Wtr Sew	4	9h 55m	-
United Utilities	Green Lane/Lyndhurst Avenue CSO	Smallshaw Brook	6	7h 58m	-
United Utilities	Greenwood Avenue/Platt Avenue CSO	Smallshaw Brook Via Sws	3	7h 34m	0 h
United Utilities	Coal Pit Lane CSO	Kebbs Brook, Riv Darwen	2	7h 22m	-
United Utilities	Edward Street (Dunkinfield) CSO	River Tame Via Sws	5	5h 36m	-
United Utilities	Dukinfield Outfall Sewer CSO	River Tame	5	4h 54m	-
United Utilities	ASHTON OLD ROAD / MANSHAW STREET CSO	Moss Brook	6	2h 24m	6 h
United Utilities	Gambrel Bank Road CSO	Downshaw Brook	2	2h 10m	-
United Utilities	HARTSHEAD CLOSE / MANSHAW ROAD CSO	Culverted Section Moss Brook	1	0h 58m	4 h
United Utilities	Argyll Street CSO	Cock Brook	0	0h	-
United Utilities	HUNTS BANK CSO	River Irk	0	0h	37 h
United Utilities	250 metres d/s Ashton Road (Bardsley PS) CSO	River Medlock	0	0h	2,266 h
United Utilities	Dukinfield Outfall Sewer CSO	River Tame	0	0h	-
United Utilities	Medlock Sports Centre CSO	Lumb Brook Via Surface Wtr Sew	0	0h	-
United Utilities	Green Lane/Lyndhurst Avenue CSO	Smallshaw Brook	0	0h	-
United Utilities	ASHTON OLD ROAD / MANSHAW STREET CSO	Moss Brook	0	0h	-
United Utilities	Greenwood Avenue/Platt Avenue CSO	Smallshaw Brook Via Sws	0	0h	-
United Utilities	HUNTS BANK CSO	River Irk	0	0h	-
United Utilities	Hathershaw Playing Field	River Medlock	0	0h	-
United Utilities	Argyll Street CSO	Cock Brook	0	0h	-
United Utilities	HARTSHEAD CLOSE / MANSHAW ROAD CSO	Culverted Section Moss Brook	0	0h	-

Company

Site Name

Receiving Waterway

Overflow Days

Total Duration (hours)

Offline/Potential Pollution

United Utilities

ASHTON-UNDER-LYNE WwTW

River Tame

372h 47m

323 h

United Utilities