Top of the Poops | Constituency Sewage Map

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You're looking at the totals that we have calculated for sewage in Wrexham 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.

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Bangor on Dee WwTW Storm Overflow	River Dee	29	425 h 56m	-
Dwr Cymru Welsh Water	Marchwiel near Wrexham WwTW Storm Overflow	Afon Clywedog	19	244 h 48m	-
Dwr Cymru Welsh Water	Heol Penyfelin Nant Storm Overflow	Afon Clywedog	20	174 h	-
Dwr Cymru Welsh Water	Ffordd Treftadaeth Wrexham Overflow	River Gwenfro	20	144 h 16m	-
Dwr Cymru Welsh Water	Holt WwTW Storm Overflow	River Dee	24	130 h 56m	-
Dwr Cymru Welsh Water	Gresford WwTW Storm Overflow	River Alyn	14	126 h 45m	-
Dwr Cymru Welsh Water	Penley Hospital Storm Overflow	Ermal Brook	10	67 h 45m	-
Dwr Cymru Welsh Water	Maelor Way Overton WwTW Storm Overflow	River Dee	11	34 h	-
Dwr Cymru Welsh Water	Holland Road Brymbo Storm Overflow	Tributary of Nant Brook	5	33 h 15m	-
Dwr Cymru Welsh Water	Pandy Overflow	River Alun	15	28 h 15m	-
Dwr Cymru Welsh Water	Llay Singrett Storm Overflow	Singret Brook	11	26 h 15m	-
Dwr Cymru Welsh Water	Heol Llewelyn Coedpoeth Storm Overflow	River Gwenfro	4	24 h 26m	-
Dwr Cymru Welsh Water	Tanyfron Road Southsea Storm Overflow	River Gwenfro	3	14 h	-
Dwr Cymru Welsh Water	Cherry Tree Road Bradley Storm Overflow	River Alyn	7	12 h 53m	-
Dwr Cymru Welsh Water	Chester Road Pulford Storm Overflow	Pulford Brook	3	11 h 29m	-
Dwr Cymru Welsh Water	Overton Wrexham WwTW Overflow	River Dee	1	10 h 30m	-
Dwr Cymru Welsh Water	Llwyn Onn Estate Wrexham Storm Overflow	Unnamed Tributary of Afon Clywedog	7	9 h	-
Dwr Cymru Welsh Water	Maesgwyn Road Wrexham Storm Overflow	River Gwenfro	18	6 h 53m	-
Dwr Cymru Welsh Water	Ruthin Road Gegin Storm Overflow	River Gwenfro	2	0 h 59m	-
Dwr Cymru Welsh Water	Queens Way Wrexham Storm Overflow	River Gwenfro	1	0 h 45m	-
Dwr Cymru Welsh Water	Rossett Level Crossing Storm Overflow	River Alyn	1	0 h 30m	-
Dwr Cymru Welsh Water	Pen Y Llyn Gwersyllt Storm Overflow	Gwersyllt Fishpond	1	0 h 15m	-
Dwr Cymru Welsh Water	Caer Estyn Storm Overflow	Tributary to Pulford Brook	1	0 h 15m	-
Dwr Cymru Welsh Water	Pandy Storm Overflow	River Alyn	0	0 h	-
Dwr Cymru Welsh Water	Yorke Street and Mount Street Wrexham Storm Overflow	Surface Water Sewer	0	0 h	-
Dwr Cymru Welsh Water	Ruthin Berse Road Coedpoeth Storm Overflow	Tributary of Afon Clywedog	0	0 h	-
Dwr Cymru Welsh Water	Holt WwTW Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Coedpoeth Talwrn Road No.1 Storm Overflow	Tributary of Afon Gwenfro	0	0 h	-
Dwr Cymru Welsh Water	Rhosnesni Lane Wrexham Overflow	River Gwenfro	0	0 h	-
Dwr Cymru Welsh Water	Cefn Y Bedd Storm Overflow	River Alyn	0	0 h	-
Dwr Cymru Welsh Water	Rivulet Road Wrexham Storm Overflow	River Gwenfro	0	0 h	-
Dwr Cymru Welsh Water	Holt Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Llay Road Llay Storm Overflow	Tributary of Afon Alyn	0	0 h	-
Dwr Cymru Welsh Water	Eyton Grove Storm Overflow	Afon Clywedog	0	0 h	-
Dwr Cymru Welsh Water	Church Road Minera Storm Overflow	Afon Clywedog	0	0 h	-
Dwr Cymru Welsh Water	Wrexham Acton Storm Overflow	Pond Adjacent	0	0 h	-
Dwr Cymru Welsh Water	Brook Street & Vicarage Hill Wrexham Storm Overflow	River Gwenfro	0	0 h	-

It's a Dirty Business

Wrexham - Live Sewage

Polluted by sewage 1,528 hours in 2026 so far..

Wrexham - Live Sewage

Which Year?

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View Annual Sewage Data

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Constituencies near Wrexham

Daily Data

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Totals so far

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It's a Dirty Business

Wrexham - Live Sewage Polluted by sewage 1,528 hours in 2026 so far..

Wrexham - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Wrexham

Daily Data

We need your support!

Totals so far

Data Sources & Accuracy

Media Queries

Please Support Us

Wrexham - Live Sewage

Polluted by sewage 1,528 hours in 2026 so far..