Top of the Poops | Constituency Sewage Map - 2025 Data| Bangor Aberconwy

Which Year?

Select Another Constituency

Constituency

Select the constituency from the drop-down

✔ means we have live data (𝑥 if not)

View Annual Sewage Data

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

Take Action

Your local MP is Claire Hughes (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

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Cwm Penmachno WwTW Storm Overflow	River Machno	230	5,176 h 19m	-
Dwr Cymru Welsh Water	Dolwyddelan WwTW Storm Overflow	Afon Lledr	169	3,007 h 32m	-
Dwr Cymru Welsh Water	Capel Curig WwTW Storm Overflow	Afon Lliw	193	2,295 h 6m	-
Dwr Cymru Welsh Water	Cwm Penmachno Storm Overflow	unnamed ditch	110	1,743 h 45m	-
Dwr Cymru Welsh Water	Talybont WwTW Storm Overflow	River Dulyn	97	1,619 h 20m	-
Dwr Cymru Welsh Water	Tregarth WwTW Storm Overflow	Afon Ogwen	96	1,613 h 30m	-
Dwr Cymru Welsh Water	Trefriw WwTW Storm Overflow	River Crafnant	101	1,560 h 11m	-
Dwr Cymru Welsh Water	Bethesda WwTW Storm Overflow	River Ogwen	114	1,273 h 15m	-
Dwr Cymru Welsh Water	Llangernyw WwTW Overflow	Elwy	71	1,102 h 6m	-
Dwr Cymru Welsh Water	Betws Yn Rhos WwTW Storm Overflow	Tributary of Afon Dulas	63	1,085 h 21m	-
Dwr Cymru Welsh Water	Penmaenmawr WwTW Storm Overflow	Coastal Waters - Conwy Bay	64	1,048 h 2m	-
Dwr Cymru Welsh Water	Bangor Treborth WwTW Storm Overflow	Menai Strait	68	966 h 1m	-
Dwr Cymru Welsh Water	Llanrwst WwTW Settled Storm Overflow	River Conwy	66	934 h	-
Dwr Cymru Welsh Water	Mill Road Betws-Y-Coed Storm Overflow	Afon Lliw	48	842 h 59m	-
Dwr Cymru Welsh Water	Betws-Y-Coed Storm Overflow	River Conwy	71	822 h 7m	-
Dwr Cymru Welsh Water	Tregarth Bron Ogwen Storm Overflow	Afon Ogwen	41	679 h 25m	-
Dwr Cymru Welsh Water	Llan Penmachno WwTW Storm Overflow	River Machno	58	596 h 15m	-
Dwr Cymru Welsh Water	Rock Terrace Storm Overflow	River Ogwen	63	534 h	-
Dwr Cymru Welsh Water	Aber Storm Overflow	Menai Strait	31	479 h	-
Dwr Cymru Welsh Water	Pwll-Glas WwTW Storm Overflow	River Clwyd	40	460 h 45m	-
Dwr Cymru Welsh Water	Eglwysbach WwTW Storm Overflow	River Hiraethlyn	25	383 h 30m	-
Dwr Cymru Welsh Water	Rowen WwTW Storm Overflow	Afon Roe	78	381 h 52m	-
Dwr Cymru Welsh Water	Llanrwst WwTW Storm Overflow	River Conwy	72	374 h 30m	-
Dwr Cymru Welsh Water	Betws-Y-Coed Pentre Ddu Storm Overflow	Afon Lliw	38	355 h 59m	-
Dwr Cymru Welsh Water	Trefriw Main Storm Overflow	River Conwy	48	353 h 44m	-
Dwr Cymru Welsh Water	Betws-Y-Coed WwTW Storm Overflow	Afon Lliw	69	267 h 28m	-
Dwr Cymru Welsh Water	Glasinfryn Storm Overflow	Afon Cegin	38	265 h	-
Dwr Cymru Welsh Water	Pendraw R Llan Glan Conwy Storm Overflow	River Conwy	17	238 h 45m	-
Dwr Cymru Welsh Water	B5382 Llangernyw Storm Overflow	River Elwy	42	229 h 6m	-
Dwr Cymru Welsh Water	Dolwyddelan Storm Overflow	Afon Lledr	31	187 h 42m	-
Dwr Cymru Welsh Water	Cerrigydrudion WwTW Storm Overflow	Afon Nug	46	182 h 10m	-
Dwr Cymru Welsh Water	Tyn-y-Groes WwTW Storm Overflow	River Conwy	31	176 h 36m	-
Dwr Cymru Welsh Water	Llanfairfechan Park Crescent Storm Overflow	Afon Llanfairfechan	71	172 h 48m	-
Dwr Cymru Welsh Water	Marine Crescent Deganwy Storm Overflow	Estuarial Waters of the River Conwy	55	166 h	-
Dwr Cymru Welsh Water	Gwydyr Road Dolgarrog Storm Overflow	River Conwy	26	163 h 13m	-
Dwr Cymru Welsh Water	Clawddnewydd WwTW Storm Overflow	Tributary of the Nant-Y-Cefn	18	155 h 45m	-
Dwr Cymru Welsh Water	Maes Bleddyn Storm Overflow	Tributary of Afon Ogwen	34	138 h 45m	-
Dwr Cymru Welsh Water	Penrhyn-Isaf Road Penrhyn Bay Storm Overflow	Penrhyn Bay	58	127 h 35m	-
Dwr Cymru Welsh Water	Waterloo Bridge Storm Overflow	River Conwy	19	117 h 7m	-
Dwr Cymru Welsh Water	Llanllechid Overflow	Afon-y-Llan	11	114 h 45m	-
Dwr Cymru Welsh Water	Morfa Road Penrhyn Bay Storm Overflow	Coastal Waters - Penrhyn Bay	17	104 h 10m	-
Dwr Cymru Welsh Water	Pwll-Glas WwTW Inlet Storm Overflow	River Clwyd	16	90 h 30m	-
Dwr Cymru Welsh Water	Nebo Road Llanrwst Storm Overflow	Afon Nant-y-Goron	47	66 h 48m	-
Dwr Cymru Welsh Water	Tan Y Ffordd Dolgarrog Storm Overflow	River Conwy	22	66 h 30m	-
Dwr Cymru Welsh Water	Rhostrehwfa Storm Overflow	River Cledwen	14	66 h	-
Dwr Cymru Welsh Water	Llandudno West Shore Storm Overflow	Conwy Bay	13	63 h 15m	-
Dwr Cymru Welsh Water	Llanrwst Storm Overflow	River Conwy	5	62 h 38m	-
Dwr Cymru Welsh Water	Pentrefoelas WwTW Storm Overflow	Afon Merddwr	10	60 h 5m	-
Dwr Cymru Welsh Water	Llanfair Talhaiarn WwTW Storm Overflow	River Elwy	17	58 h	-
Dwr Cymru Welsh Water	Dale Road Storm Overflow	Conwy Bay	52	56 h 17m	-
Dwr Cymru Welsh Water	Glanwydden Storm Overflow	Afon Wydden	12	54 h 45m	-
Dwr Cymru Welsh Water	Tan-y-Fedw Trefriw Storm Overflow	Afon Crafnant	15	49 h 9m	-
Dwr Cymru Welsh Water	Llanfairfechan No 1 Storm Overflow	Afon Llanfairfechan	33	47 h 38m	-
Dwr Cymru Welsh Water	Marl Drive Llandudno Storm Overflow	Afon Wydden	6	31 h	-
Dwr Cymru Welsh Water	TalyBont WwTW Storm Overflow	Afon Ogwen	13	25 h 45m	-
Dwr Cymru Welsh Water	Betws-Y-Coed Muriau Storm Overflow	River Conwy	21	25 h 25m	-
Dwr Cymru Welsh Water	Conwy Gyffin Storm Overflow	River Conwy	17	23 h 30m	-
Dwr Cymru Welsh Water	Llandudno Junction Glan-Y-Mor Road Storm Overflow	Estuarial Waters of the River Conwy	10	22 h 45m	-
Dwr Cymru Welsh Water	Beach Road Bangor Storm Overflow	Menai Strait	8	20 h	-
Dwr Cymru Welsh Water	Lower Gate Street Conwy Storm Overflow	River Conwy Estuary	8	20 h	-
Dwr Cymru Welsh Water	Treborth Bangor WwTW Overflow	Menai Strait	8	14 h	-
Dwr Cymru Welsh Water	Bangor Beach Road Overflow	Menai Strait	6	14 h	-
Dwr Cymru Welsh Water	Morfa Drive Conwy Storm Overflow	River Conwy	10	13 h 30m	-
Dwr Cymru Welsh Water	Penaenmawr Station Storm Overflow	Coastal waters via a culvert	7	12 h 1m	-
Dwr Cymru Welsh Water	Conwy Harbour Overflow	River Conwy	8	10 h 50m	-
Dwr Cymru Welsh Water	Penmaenmawr WwTW Overflow	Conwy Bay	4	8 h 45m	-
Dwr Cymru Welsh Water	Penmaenmawr Promenade Storm Overflow	Coastal Waters - Penmaenmawr	4	8 h 15m	-
Dwr Cymru Welsh Water	Glan Y Mor Road Deganwy Tywyn Storm Overflow	River Conwy	8	7 h 15m	-
Dwr Cymru Welsh Water	Llandudno Road Penrhyn Bay Storm Overflow	Afon Ganol	8	7 h 14m	-
Dwr Cymru Welsh Water	Hill View Road Llanrhos Storm Overflow	Unnamed Ditch	6	7 h 12m	-
Dwr Cymru Welsh Water	Penrhyn Hill Storm Overflow	Coastal Waters - Penrhyn Bay	10	6 h	-
Dwr Cymru Welsh Water	Llandudno Conway Road Storm Overflow	Afon Wydden	2	3 h 19m	-
Dwr Cymru Welsh Water	Coleg Normal Overflow	Menai Strait	4	3 h 15m	-
Dwr Cymru Welsh Water	Pentre Llanrhaeadr Storm Overflow	Nant Mawr	1	2 h 45m	-
Dwr Cymru Welsh Water	Llansannan Storm Overflow	River Aled	3	2 h 30m	-
Dwr Cymru Welsh Water	Deganwy Deganwy Road Storm Overflow	Conwy Estuary	3	1 h 44m	-
Dwr Cymru Welsh Water	Biwla Storm Overflow	Nant Garreg Ddu	3	1 h 15m	-
Dwr Cymru Welsh Water	Pentre Felin Betws Y Coed Overflow	Afon Lliw	2	0 h 28m	-
Dwr Cymru Welsh Water	Llandudno Road Penrhyn Bay Overflow	Afon Ganol East	0	0 h	-
Dwr Cymru Welsh Water	Meirion Road Storm Overflow	Estuarial Waters	0	0 h	-
Dwr Cymru Welsh Water	Gorad Road Bangor Storm Overflow	Menai Strait	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	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	Hendre Road Conwy Storm Overflow	Afon Gyffin	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Betws-Yn-Rhos Recreation Ground Storm Overflow	River Dulas	0	0 h	-
Dwr Cymru Welsh Water	Tremarl Llandudno Junction Overfow	Unname Watercourse	0	0 h	-
Dwr Cymru Welsh Water	Near Penmaenmawr Dwygyfylchi Storm Overflow	Afon Gyrach	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Mill Hill Storm Overflow	Afon Gyffin	0	0 h	-
Dwr Cymru Welsh Water	Ganol Overflow	Afon Ganol	0	0 h	-

It's a Dirty Business

Bangor Aberconwy - 2025 Sewage

Polluted by sewage 33,530 hours in 2025 - That's 3.88 years

Bangor Aberconwy - 2025 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

It's a Dirty Business

Bangor Aberconwy - 2025 Sewage Polluted by sewage 33,530 hours in 2025 - That's 3.88 years

Bangor Aberconwy - 2025 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 - 2025 Sewage

Polluted by sewage 33,530 hours in 2025 - That's 3.88 years