Top of the Poops | Constituency Sewage Map | Bangor Aberconwy

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Live data for Bangor Aberconwy in 2026

So far this year (as of 12 Nov 2026, 12:45) there has been 22,213 hours of sewage overflows, from 93 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 2.57 years!

Totals for Bangor Aberconwy in 2025

84 Sites polluted by Dwr Cymru Welsh Water

3,992 sewage dumps

38,118 hours duration

Sewage pollution map of Bangor Aberconwy: 3,992 spills in 2025, lasting 38,118 hours, by Dwr Cymru Welsh Water

That's 4.41 years. On average 10.9 times a day

Change Over Time

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Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Lledr	DOLWYDDELAN WWTW	176	3,186	99.8
Dwr Cymru Welsh Water	Llugwy	Capel Curig Wastewater Treatment Works	243	3,034	99.9
Dwr Cymru Welsh Water	Ogwen	TREGARTH	124	2,206	99.9
Dwr Cymru Welsh Water	Conwy Estuary	TREFRIW STW	130	2,012	99.8
Dwr Cymru Welsh Water	Unnamed Ditch	Cwm Penmachno - CSO	128	1,875	99.8
Dwr Cymru Welsh Water	Cfgin	GLASINFRYN SPS CSO	101	1,678	99.8
Dwr Cymru Welsh Water	River Ogwen	BETHESDA STW (FINAL) BETHESDA	152	1,646	99.9
Dwr Cymru Welsh Water	River Dulas	BETWS YN RHOS STW	85	1,466	99.8
Dwr Cymru Welsh Water	Conwy	DOLGARROG/TALYBONT STW	82	1,458	99.9
Dwr Cymru Welsh Water	Menai Strait	TREBORTH STW (FINAL) BANGOR	106	1,187	99.85
Dwr Cymru Welsh Water	River Conwy	LLANRWST STW LLLANWRST CONWY	95	1,150	99.9
Dwr Cymru Welsh Water	Coastal Waters Of Conwy Bay	PENMAENMAWR WWTW PENMAENMAWR	62	1,019	99.9
Dwr Cymru Welsh Water	River Ogwen	Fron Ogwen PS	65	994	99.9
Dwr Cymru Welsh Water	River Hiraethlyn	EGLWYSBACH STW	54	960	99.9
Dwr Cymru Welsh Water	River Llugwy	Mill Rd SPS	58	937	99.9
Dwr Cymru Welsh Water	River Conwy	Betws y Coed Golf Club PS	82	872	99.8
Dwr Cymru Welsh Water	River Clwyd	PWLLGLAS STW	80	868	99.9
Dwr Cymru Welsh Water	River Llugwy	BETWS Y COED WWTW	106	728	99.9
Dwr Cymru Welsh Water	Coastal Waters Of Conwy Bay	PENMAENMAWR WWTW PENMAENMAWR	45	713	99.8
Dwr Cymru Welsh Water	River Dulyn	Dolgarrog CSO No. 2	46	690	99.9
Dwr Cymru Welsh Water	River Machno	LLAN PENMACHNO STW	73	657	99.9
Dwr Cymru Welsh Water	River Ogwen	Rock Terrace CSO Bethesda	85	620	99.9
Dwr Cymru Welsh Water	Menai Strait	ABERGWYNGREGYN PUMPING STATION	32	592	99.3
Dwr Cymru Welsh Water	Coastal Waters Of Penrhyn Bay	GANOL WWTW (STW) GLAN CONWY CORNER	73	524	99.9
Dwr Cymru Welsh Water	Conwy Bay	DALE ROAD STORM SPS LLANDUDNO	167	504	99.8
Dwr Cymru Welsh Water	Nant Y Cefn	Settled Storm Overflow at Clawddnewydd Wastewater Treatment Works	38	455	99.9
Dwr Cymru Welsh Water	River Lledr	Screened Storm Sewage at Dolwyddelan WwTW	22	438	100
Dwr Cymru Welsh Water	River Conwy	SPS at Llanrwst STW Llanrwst Conwy	90	428	99.9
Dwr Cymru Welsh Water	Conwy Estuary	GLAN CONWY SPS	28	404	99.9
Dwr Cymru Welsh Water	Llanfairfechan	LLANFAIRFECHAN - SSO	122	387	96.5
Dwr Cymru Welsh Water	Roe	ROWEN STW	98	387	99.9
Dwr Cymru Welsh Water	River Llugwy	Pentre Ddu CSO, Betws-y-Coed	43	338	99.5
Dwr Cymru Welsh Water	Coastal Waters Of Penrhyn Bay	GANOL WWTW (STW) GLAN CONWY CORNER	37	321	99.7
Dwr Cymru Welsh Water	Elwy	Llangernyw SPS	88	315	99.9
Dwr Cymru Welsh Water	R Nug	CERRIGYDRUDION STW	56	284	99.9
Dwr Cymru Welsh Water	River Conwy	DEGANWY PS MARINE CRESCENT DEGANWY	80	228	99.9
Dwr Cymru Welsh Water	River Conwy	Dolgarreg Tan Y Fford SPS	42	224	99.9
Dwr Cymru Welsh Water	River Roe	CSO at Rowen STW	27	211	100
Dwr Cymru Welsh Water	River Conwy	Tyn Y Groes STW - Storm Overflow	37	183	99.3
Dwr Cymru Welsh Water	Penrhyn Bay Via Surface Water Sewer	CSO at Penrhyn Isaf Road	76	166	98.8
Dwr Cymru Welsh Water	Penrhyn Bay	PENRHYN BAY PS MORFA RD PENRHYN BAY	21	162	99.9
Dwr Cymru Welsh Water	River Conwy	Waterloo SPS	26	154	99.6
Dwr Cymru Welsh Water	River Ogwen	RACHUB MAES BLEDDYN CSO	54	129	98.5
Dwr Cymru Welsh Water	River Y Llan	LLANLLECHID SPS , ,	13	121	99.9
Dwr Cymru Welsh Water	River Elwy	LLANFAIR STW	21	113	99.9
Dwr Cymru Welsh Water	Conwy Bay	WEST SHORE PS ABBEY ROAD LLANDUDNO	17	102	99.9
Dwr Cymru Welsh Water	River Conwy	Tan Y Fford CSO	34	98	99.9
Dwr Cymru Welsh Water	Llanfairfechan	LLANFAIRFECHAN SSO NO. 1	54	96	99.1
Dwr Cymru Welsh Water	River Wydden	GLANWYDDAN PUMPING STATION	14	96	98.4
Dwr Cymru Welsh Water	Unnamed Watercourse	Tan-y-Fedw CSO, Trefriw (MH No. 104)	18	92	99.4
Dwr Cymru Welsh Water	River Lledr	CSO & SPS Nr 2250 Dolwyddlean	29	85	98.8
Dwr Cymru Welsh Water	River Wydden	MARL DRIVE CSO LLANDUDNO JUNCTION	9	67	99.9
Dwr Cymru Welsh Water	Estuarial Waters Of River Conwy	Gyffin PS Morfa Bach Conwy	28	54	99.8
Dwr Cymru Welsh Water	River Conwy	LLANDUDNO JUNCTION PS	15	45	99.9
Dwr Cymru Welsh Water	River Merddwr	Pentrefoelas - CSO	13	38	99.8
Dwr Cymru Welsh Water	Menai Strait	BEACH ROAD PS BANGOR ,	35	35	77.7
Dwr Cymru Welsh Water	River Conwy	Betwys Y Coed Muriau P.S.	26	31	99.9
Dwr Cymru Welsh Water	Conwy Estuary	MORFA PS MORFA DRIVE MORFA CONWY	16	31	99.7
Dwr Cymru Welsh Water	River Conwy	QUAY PS CONWY QUAY CONWY	12	30	99.9
Dwr Cymru Welsh Water	Coastal Waters Via Sw Culvert	STATION ROAD CSO	11	24	99.9
Dwr Cymru Welsh Water	River Nant-Y-Goron	BRYN AFON CSO	74	21	99.4
Dwr Cymru Welsh Water	River Ogwen	TALYBONT STW	19	19	99.9
Dwr Cymru Welsh Water	Unnamed Ditch	LLANDUDNO LLANRHOS SPS	9	14	99.9
Dwr Cymru Welsh Water	Coastal Waters	PENMAENMAWR PROMENADE PS	7	14	96.6
Dwr Cymru Welsh Water	River Conwy	TYWYN PS	12	13	97.7
Dwr Cymru Welsh Water	Ganol	PENRHYN BAY LLANDUNDNO ROAD -	19	10	99.8
Dwr Cymru Welsh Water	Un-Named Stream	PENRHYN BAY LLANDUNDNO ROAD -	4	10	99.9
Dwr Cymru Welsh Water	A Culverted River Conwy	Llanwrst CSO	4	9	92.8
Dwr Cymru Welsh Water	Menai Strait	COLEG NORMAL SEWAGE PUMPING STATION	5	6	99.9
Dwr Cymru Welsh Water	River Ganol	GANOL STW PS GLAN CONWY CORNER	6	5	99.9
Dwr Cymru Welsh Water	Coastal Waters - Penrhyn Bay	PENRHYN HILL PENRHYN BAY	9	4	99.5
Dwr Cymru Welsh Water	Conwy Estuary	DEGANWY ROAD DEGANWY	5	4	92.1
Dwr Cymru Welsh Water	River Aled	Llansannan Ddol CSO	5	3	99.6
Dwr Cymru Welsh Water	River Wydden	CONWY ROAD STORM PS	2	3	99.9
Dwr Cymru Welsh Water	Nant Mawr	Pentre Llanrhaedr PS	1	2	99.9
Dwr Cymru Welsh Water	River Dulas	CSO AT BETTWYS YN RHOS SPORTS GROUND	1	2	100
Dwr Cymru Welsh Water	Nant Garreg Ddu	GLAN Y MOR PUMPING STATION	3	1	99.9
Dwr Cymru Welsh Water	Gyrach	PENMAENMAWR WWTW PENMAENMAWR	1	0	99.8
Dwr Cymru Welsh Water	River Cegin	GLAENTRAETH ESTATE PS BANGOR ,	1	0	99.9
Dwr Cymru Welsh Water	Menai Strait	Gorad Road SPS	1	0	99.5
Dwr Cymru Welsh Water	Gyffin	HENDRE ROAD SSO	1	0	99.9
Dwr Cymru Welsh Water	Unnamed Watercourse	IND ESTATE LLANDUDNO JUNCTION GLAN	1	0	99.9
Dwr Cymru Welsh Water	Estuarial Waters	Meirion Road PS (Storm/Emerg)	1	0	99.9
Dwr Cymru Welsh Water	Gyffin	ST. AGNES ROAD CSO	1	0	99.9
Dwr Cymru Welsh Water	River Conwy	CSO NEAR PS NO 2 TREFRIW	0	0	0
Dwr Cymru Welsh Water	Unnamed Ditch	DEGANWY BEACH SPS	0	0	99.9
Dwr Cymru Welsh Water	Conway Bay	LLANFAIRFECHAN HOSPITAL SPS	0	0	99.9
Dwr Cymru Welsh Water	River Wydden	WOODLANDS P.S WOODLANDS ESTATE MARL	0	0	99.9

Bangor Aberconwy

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Live data for Bangor Aberconwy in 2026

Totals for Bangor Aberconwy in 2025

84 Sites polluted by Dwr Cymru Welsh Water

Change Over Time

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