Top of the Poops | Constituency Sewage Map - Live Data| Bangor Aberconwy

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You're looking at the totals that we have calculated for sewage in Bangor Aberconwy 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	Cwm Penmachno WwTW Storm Overflow	River Machno	55	1,155 h 2m	-
Dwr Cymru Welsh Water	Capel Curig WwTW Storm Overflow	Afon Lliw	53	910 h 17m	-
Dwr Cymru Welsh Water	Tregarth WwTW Storm Overflow	Afon Ogwen	45	852 h 46m	-
Dwr Cymru Welsh Water	Penmaenmawr WwTW Storm Overflow	Coastal Waters - Conwy Bay	43	793 h 3m	-
Dwr Cymru Welsh Water	Dolwyddelan WwTW Storm Overflow	Afon Lledr	46	616 h 50m	-
Dwr Cymru Welsh Water	Pwll-Glas WwTW Storm Overflow	River Clwyd	34	528 h 10m	-
Dwr Cymru Welsh Water	Bethesda WwTW Storm Overflow	River Ogwen	45	492 h 30m	-
Dwr Cymru Welsh Water	Bangor Treborth WwTW Storm Overflow	Menai Strait	33	484 h 30m	-
Dwr Cymru Welsh Water	Talybont WwTW Storm Overflow	River Dulyn	29	389 h 48m	-
Dwr Cymru Welsh Water	Trefriw WwTW Storm Overflow	River Crafnant	42	387 h 48m	-
Dwr Cymru Welsh Water	Cwm Penmachno Storm Overflow	unnamed ditch	23	366 h 2m	-
Dwr Cymru Welsh Water	Glasinfryn Storm Overflow	Afon Cegin	27	312 h 30m	-
Dwr Cymru Welsh Water	Clawddnewydd WwTW Storm Overflow	Tributary of the Nant-Y-Cefn	14	302 h 45m	-
Dwr Cymru Welsh Water	Betws Yn Rhos WwTW Storm Overflow	Tributary of Afon Dulas	16	246 h 21m	-
Dwr Cymru Welsh Water	Pwll-Glas WwTW Inlet Storm Overflow	River Clwyd	27	238 h 13m	-
Dwr Cymru Welsh Water	Pendraw R Llan Glan Conwy Storm Overflow	River Conwy	14	176 h 15m	-
Dwr Cymru Welsh Water	Llan Penmachno WwTW Storm Overflow	River Machno	16	151 h 30m	-
Dwr Cymru Welsh Water	Llanrwst WwTW Settled Storm Overflow	River Conwy	18	129 h 2m	-
Dwr Cymru Welsh Water	Dale Road Storm Overflow	Conwy Bay	40	112 h 39m	-
Dwr Cymru Welsh Water	Tregarth Bron Ogwen Storm Overflow	Afon Ogwen	7	109 h	-
Dwr Cymru Welsh Water	Rock Terrace Storm Overflow	River Ogwen	29	98 h 45m	-
Dwr Cymru Welsh Water	Llanfairfechan Park Crescent Storm Overflow	Afon Llanfairfechan	26	76 h 27m	-
Dwr Cymru Welsh Water	Rowen WwTW Storm Overflow	Afon Roe	17	74 h 14m	-
Dwr Cymru Welsh Water	Betws-Y-Coed WwTW Storm Overflow	Afon Lliw	23	70 h	-
Dwr Cymru Welsh Water	Eglwysbach WwTW Storm Overflow	River Hiraethlyn	5	69 h 15m	-
Dwr Cymru Welsh Water	Betws-Y-Coed Storm Overflow	River Conwy	14	58 h 30m	-
Dwr Cymru Welsh Water	Tyn-y-Groes WwTW Storm Overflow	River Conwy	9	56 h 44m	-
Dwr Cymru Welsh Water	Mill Road Betws-Y-Coed Storm Overflow	Afon Lliw	6	43 h 30m	-
Dwr Cymru Welsh Water	Glanwydden Storm Overflow	Afon Wydden	3	23 h 15m	-
Dwr Cymru Welsh Water	Penrhyn-Isaf Road Penrhyn Bay Storm Overflow	Penrhyn Bay	15	22 h 35m	-
Dwr Cymru Welsh Water	Cerrigydrudion WwTW Storm Overflow	Afon Nug	5	20 h 15m	-
Dwr Cymru Welsh Water	Llanrwst WwTW Storm Overflow	River Conwy	16	19 h 30m	-
Dwr Cymru Welsh Water	Llanfairfechan No 1 Storm Overflow	Afon Llanfairfechan	11	19 h 25m	-
Dwr Cymru Welsh Water	Morfa Road Penrhyn Bay Storm Overflow	Coastal Waters - Penrhyn Bay	5	18 h 53m	-
Dwr Cymru Welsh Water	Llangernyw WwTW Overflow	Elwy	2	11 h 30m	-
Dwr Cymru Welsh Water	Marine Crescent Deganwy Storm Overflow	Estuarial Waters of the River Conwy	7	8 h 45m	-
Dwr Cymru Welsh Water	Gwydyr Road Dolgarrog Storm Overflow	River Conwy	2	5 h 22m	-
Dwr Cymru Welsh Water	Llandudno West Shore Storm Overflow	Conwy Bay	3	5 h	-
Dwr Cymru Welsh Water	Aber Storm Overflow	Menai Strait	3	4 h	-
Dwr Cymru Welsh Water	Trefriw Main Storm Overflow	River Conwy	4	3 h 45m	-
Dwr Cymru Welsh Water	Maes Bleddyn Storm Overflow	Tributary of Afon Ogwen	2	3 h 13m	-
Dwr Cymru Welsh Water	Betws-Y-Coed Muriau Storm Overflow	River Conwy	1	2 h 15m	-
Dwr Cymru Welsh Water	Llandudno Junction Glan-Y-Mor Road Storm Overflow	Estuarial Waters of the River Conwy	2	1 h 45m	-
Dwr Cymru Welsh Water	Llanllechid Overflow	Afon-y-Llan	1	1 h 30m	-
Dwr Cymru Welsh Water	Tan Y Ffordd Dolgarrog Storm Overflow	River Conwy	2	1 h	-
Dwr Cymru Welsh Water	Conwy Gyffin Storm Overflow	River Conwy	2	0 h 45m	-
Dwr Cymru Welsh Water	Treborth Bangor WwTW Overflow	Menai Strait	1	0 h 30m	-
Dwr Cymru Welsh Water	Penmaenmawr WwTW Overflow	Conwy Bay	1	0 h 15m	-
Dwr Cymru Welsh Water	Penrhyn Hill Storm Overflow	Coastal Waters - Penrhyn Bay	0	0 h	-
Dwr Cymru Welsh Water	Ganol Overflow	Afon Ganol	0	0 h	-
Dwr Cymru Welsh Water	Llanrwst Storm Overflow	River Conwy	0	0 h	-
Dwr Cymru Welsh Water	Biwla Storm Overflow	Nant Garreg Ddu	0	0 h	-
Dwr Cymru Welsh Water	Pentrefoelas WwTW Storm Overflow	Afon Merddwr	0	0 h	-
Dwr Cymru Welsh Water	Llanfair Talhaiarn WwTW Storm Overflow	River Elwy	0	0 h	-
Dwr Cymru Welsh Water	Dolwyddelan Storm Overflow	Afon Lledr	0	0 h	-
Dwr Cymru Welsh Water	Tan-y-Fedw Trefriw Storm Overflow	Afon Crafnant	0	0 h	-
Dwr Cymru Welsh Water	Coleg Normal Overflow	Menai Strait	0	0 h	-
Dwr Cymru Welsh Water	Glan Y Mor Road Deganwy Tywyn Storm Overflow	River Conwy	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Llandudno Road Penrhyn Bay Overflow	Afon Ganol East	0	0 h	-
Dwr Cymru Welsh Water	Pentre Felin Betws Y Coed Overflow	Afon Lliw	0	0 h	-
Dwr Cymru Welsh Water	Meirion Road Storm Overflow	Estuarial Waters	0	0 h	-
Dwr Cymru Welsh Water	Betws-Y-Coed Pentre Ddu Storm Overflow	Afon Lliw	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	B5382 Llangernyw Storm Overflow	River Elwy	0	0 h	-
Dwr Cymru Welsh Water	Lower Gate Street Conwy Storm Overflow	River Conwy Estuary	0	0 h	-
Dwr Cymru Welsh Water	Penaenmawr Station Storm Overflow	Coastal waters via a culvert	0	0 h	-
Dwr Cymru Welsh Water	Llandudno Road Penrhyn Bay Storm Overflow	Afon Ganol	0	0 h	-
Dwr Cymru Welsh Water	Hendre Road Conwy Storm Overflow	Afon Gyffin	0	0 h	-
Dwr Cymru Welsh Water	TalyBont WwTW Storm Overflow	Afon Ogwen	0	0 h	-
Dwr Cymru Welsh Water	Hill View Road Llanrhos Storm Overflow	Unnamed Ditch	0	0 h	-
Dwr Cymru Welsh Water	Nebo Road Llanrwst Storm Overflow	Afon Nant-y-Goron	0	0 h	-
Dwr Cymru Welsh Water	Marl Drive Llandudno Storm Overflow	Afon Wydden	0	0 h	-
Dwr Cymru Welsh Water	Conwy Harbour Overflow	River Conwy	0	0 h	-
Dwr Cymru Welsh Water	Penmaenmawr Promenade Storm Overflow	Coastal Waters - Penmaenmawr	0	0 h	-
Dwr Cymru Welsh Water	Beach Road Bangor Storm Overflow	Menai Strait	0	0 h	-
Dwr Cymru Welsh Water	Bangor Beach Road Overflow	Menai Strait	0	0 h	-
Dwr Cymru Welsh Water	Deganwy Deganwy Road Storm Overflow	Conwy Estuary	0	0 h	-
Dwr Cymru Welsh Water	Pentre Llanrhaeadr Storm Overflow	Nant Mawr	0	0 h	-
Dwr Cymru Welsh Water	Rhostrehwfa Storm Overflow	River Cledwen	0	0 h	-
Dwr Cymru Welsh Water	Near Penmaenmawr Dwygyfylchi Storm Overflow	Afon Gyrach	0	0 h	-
Dwr Cymru Welsh Water	Waterloo Bridge Storm Overflow	River Conwy	0	0 h	-
Dwr Cymru Welsh Water	Mill Hill Storm Overflow	Afon Gyffin	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Ganol Disinfected Overflow	Afon Ganol	0	0 h	-
Dwr Cymru Welsh Water	Betws-Yn-Rhos Recreation Ground Storm Overflow	River Dulas	0	0 h	-
Dwr Cymru Welsh Water	Glan Traeth Bangor Overflow	Afon Cegin	0	0 h	-
Dwr Cymru Welsh Water	King Georges Field Overflow	Culvert to Bangor Mud Flats	0	0 h	-
Dwr Cymru Welsh Water	Llansannan Storm Overflow	River Aled	0	0 h	-
Dwr Cymru Welsh Water	Morfa Drive Conwy Storm Overflow	River Conwy	0	0 h	-
Dwr Cymru Welsh Water	Llandudno Conway Road Storm Overflow	Afon Wydden	0	0 h	-
Dwr Cymru Welsh Water	Gorad Road Bangor Storm Overflow	Menai Strait	0	0 h	-
Dwr Cymru Welsh Water	Tremarl Llandudno Junction Overfow	Unname Watercourse	0	0 h	-

It's a Dirty Business

Bangor Aberconwy - Live Sewage

Polluted by sewage 9,476 hours in 2026 - That's 1.1 years so far..

Bangor Aberconwy - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Bangor Aberconwy

Daily Data

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Totals so far

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It's a Dirty Business

Bangor Aberconwy - Live Sewage Polluted by sewage 9,476 hours in 2026 - That's 1.1 years so far..

Bangor Aberconwy - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Bangor Aberconwy

Daily Data

We need your support!

Totals so far

Data Sources & Accuracy

Media Queries

Please Support Us

Bangor Aberconwy - Live Sewage

Polluted by sewage 9,476 hours in 2026 - That's 1.1 years so far..