Bangor Aberconwy

Polluted by sewage 4,389 times in 2024 lasting 42,673 hours - That's 4.94 years!

Monitoring was disabled in some locations, so could be more

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Constituency

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✔ means we have experimental daily data since 2023

Totals for Bangor Aberconwy in 2024

84 Sites polluted by Dwr Cymru Welsh Water

4,389 sewage dumps

42,673 hours duration

That's 4.94 years! On average 12 times a day

Change Over Time

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Constituencies near Bangor Aberconwy

Waterways in Bangor Aberconwy

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Bangor Aberconwy in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 1 of the total 87 CSO locations had reporting enabled for less than half the year. Of these 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Lledr	Screened Storm Sewage at Dolwyddelan WwTW	186	3,582	99.5
Dwr Cymru Welsh Water	River Llugwy	Capel Curig Sd.Scheme CSO	175	2,841	100
Dwr Cymru Welsh Water	Unnamed Ditch	Cwm Penmachno - CSO	147	2,524	98.8
Dwr Cymru Welsh Water	Coastal Waters Of Conwy Bay	PENMAENMAWR WWTW PENMAENMAWR	162	2,412	99.9
Dwr Cymru Welsh Water	River Dulyn	Dolgarrog CSO No. 2	148	2,142	99.8
Dwr Cymru Welsh Water	Nant Y Cefn	Settled Storm Overflow at Clawddnewydd Wastewater Treatment Works	100	1,991	100
Dwr Cymru Welsh Water	River Ogwen	Settled Storm Overflow at Tregarth Wastewater Treatment Works	83	1,760	99.9
Dwr Cymru Welsh Water	River Crafnant	SPS at Trefriw STW	98	1,665	100
Dwr Cymru Welsh Water	Menai Strait	Treborth WwTW (Settled Storm)	101	1,574	100
Dwr Cymru Welsh Water	River Ogwen	BETHESDA STW (FINAL) BETHESDA	171	1,514	99.8
Dwr Cymru Welsh Water	River Dulas	Settled Storm Overflow at Betws-yn-Rhos Wastewater Treatment Works	72	1,436	99.9
Dwr Cymru Welsh Water	River Hiraethlyn	EGLWYSBACH STW	88	1,406	99.4
Dwr Cymru Welsh Water	River Llugwy	Mill Rd SPS	69	1,223	99.9
Dwr Cymru Welsh Water	Coastal Waters Of Penrhyn Bay	GANOL WWTW (STW) GLAN CONWY CORNER	210	1,189	99.9
Dwr Cymru Welsh Water	Ogwen	TREGARTH	74	987	100
Dwr Cymru Welsh Water	River Conwy	Betws y Coed Golf Club PS	81	939	99.8
Dwr Cymru Welsh Water	River Machno	LLAN PENMACHNO STW SCREENED CSO	65	899	88.1
Dwr Cymru Welsh Water	Cfgin	GLASINFRYN SPS CSO	95	891	99.8
Dwr Cymru Welsh Water	River Clwyd	Settled Storm Sewage at Pwllglas WwTW	62	863	100
Dwr Cymru Welsh Water	River Ogwen	Fron Ogwen PS	79	836	99.9
Dwr Cymru Welsh Water	River Dulas	BETWS YN RHOS STW	54	811	100
Dwr Cymru Welsh Water	Conwy Bay	DALE ROAD STORM SPS LLANDUDNO	254	709	99.8
Dwr Cymru Welsh Water	River Elwy	LLANFAIRTALHAIARN STW (STORM)	55	619	100
Dwr Cymru Welsh Water	Llugwy	Capel Curig Wastewater Treatment Works	30	537	88.6
Dwr Cymru Welsh Water	River Llugwy	BETWS Y COED WWTW	31	521	100
Dwr Cymru Welsh Water	River Conwy	Settled Storm Storage at Llanrwst STW Llanwrst Conwy	61	480	100
Dwr Cymru Welsh Water	Conwy Estuary	GLAN CONWY SPS	30	462	99.8
Dwr Cymru Welsh Water	River Roe	CSO at Rowen STW	130	415	99.7
Dwr Cymru Welsh Water	River Wydden	GLANWYDDAN PUMPING STATION	36	381	99.9
Dwr Cymru Welsh Water	River Conwy	Waterloo SPS	39	381	99.9
Dwr Cymru Welsh Water	River Conwy	SPS at Llanrwst STW Llanrwst Conwy	91	371	99.9
Dwr Cymru Welsh Water	River Conwy	Dolgarreg Tan Y Fford SPS	51	365	99.9
Dwr Cymru Welsh Water	Llanfairfechan	LLANFAIRFECHAN - SSO	128	360	68.6
Dwr Cymru Welsh Water	River Clwyd	PWLLGLAS STW	20	329	100
Dwr Cymru Welsh Water	R Nug	CERRIGYDRUDION STW	37	244	99.2
Dwr Cymru Welsh Water	River Nug	CSO at Cerrigydrudion WwTW	47	228	58.4
Dwr Cymru Welsh Water	Penrhyn Bay Via Surface Water Sewer	CSO at Penrhyn Isaf Road	102	224	96
Dwr Cymru Welsh Water	River Conwy	LLANRWST STW LLLANWRST CONWY	26	222	100
Dwr Cymru Welsh Water	Penrhyn Bay	PENRHYN BAY PS MORFA RD PENRHYN BAY	31	216	99.9
Dwr Cymru Welsh Water	River Ogwen	Rock Terrace CSO Bethesda	68	195	77.8
Dwr Cymru Welsh Water	River Clwyd	PWLLGLAS STW	30	189	99.3
Dwr Cymru Welsh Water	Menai Strait	ABERGWYNGREGYN PUMPING STATION	19	185	99.9
Dwr Cymru Welsh Water	Menai Strait	TREBORTH STW (FINAL) BANGOR	15	184	100
Dwr Cymru Welsh Water	River Lledr	CSO & SPS Nr 2250 Dolwyddlean	33	129	97.4
Dwr Cymru Welsh Water	River Conwy	Tan Y Fford CSO	41	121	99.9
Dwr Cymru Welsh Water	River Conwy	DEGANWY PS MARINE CRESCENT DEGANWY	109	120	99.9
Dwr Cymru Welsh Water	River Ogwen	RACHUB MAES BLEDDYN CSO	51	107	94.3
Dwr Cymru Welsh Water	Llanfairfechan	LLANFAIRFECHAN SSO NO. 1	53	100	98.2
Dwr Cymru Welsh Water	Conwy Bay	WEST SHORE PS ABBEY ROAD LLANDUDNO	30	92	99.9
Dwr Cymru Welsh Water	River Elwy	LLANFAIR STW	11	86	100
Dwr Cymru Welsh Water	River Conwy	LLANDUDNO JUNCTION PS	23	57	99.9
Dwr Cymru Welsh Water	River Machno	LLAN PENMACHNO STW	6	47	99.8
Dwr Cymru Welsh Water	River Merddwr	Pentrefoelas - CSO	14	47	99.3
Dwr Cymru Welsh Water	Conwy Estuary	TREFRIW STW	7	47	100
Dwr Cymru Welsh Water	Unnamed Watercourse	Tan-y-Fedw CSO, Trefriw (MH No. 104)	12	46	98.7
Dwr Cymru Welsh Water	Menai Strait	BEACH ROAD PS BANGOR ,	47	44	99.9
Dwr Cymru Welsh Water	River Nant-Y-Goron	BRYN AFON CSO	112	44	98.5
Dwr Cymru Welsh Water	River Wydden	MARL DRIVE CSO LLANDUDNO JUNCTION	8	36	99.9
Dwr Cymru Welsh Water	River Conwy	Betwys Y Coed Muriau P.S.	25	35	99.8
Dwr Cymru Welsh Water	River Llugwy	Pentre Ddu CSO, Betws-y-Coed	13	30	84.6
Dwr Cymru Welsh Water	River Conwy	Tyn Y Groes STW - Storm Overflow	10	27	99.4
Dwr Cymru Welsh Water	A Culverted River Conwy	Llanwrst CSO	6	17	67.2
Dwr Cymru Welsh Water	Estuarial Waters Of River Conwy	Gyffin PS Morfa Bach Conwy	6	13	99.8
Dwr Cymru Welsh Water	Elwy	Llangernyw SPS	4	12	88.3
Dwr Cymru Welsh Water	Nant Garreg Ddu	GLAN Y MOR PUMPING STATION	13	11	100
Dwr Cymru Welsh Water	Coastal Waters	PENMAENMAWR PROMENADE PS	10	9	99.9
Dwr Cymru Welsh Water	Ganol	PENRHYN BAY LLANDUNDNO ROAD -	18	8	98.8
Dwr Cymru Welsh Water	Gyrach	PENMAENMAWR WWTW PENMAENMAWR	1	8	100
Dwr Cymru Welsh Water	Conwy Estuary	MORFA PS MORFA DRIVE MORFA CONWY	6	8	99.9
Dwr Cymru Welsh Water	Coastal Waters Via Sw Culvert	STATION ROAD CSO	7	7	99.9
Dwr Cymru Welsh Water	River Aled	Llansannan Ddol CSO	5	7	98.9
Dwr Cymru Welsh Water	Unnamed Ditch	LLANDUDNO LLANRHOS SPS	6	5	99.9
Dwr Cymru Welsh Water	Menai Strait	Gorad Road SPS	8	4	99.9
Dwr Cymru Welsh Water	River Conwy	QUAY PS CONWY QUAY CONWY	9	4	99.8
Dwr Cymru Welsh Water	Nant Mawr	Pentre Llanrhaedr PS	2	3	99.9
Dwr Cymru Welsh Water	River Conwy	TYWYN PS	9	3	99.4
Dwr Cymru Welsh Water	Coastal Waters - Penrhyn Bay	PENRHYN HILL PENRHYN BAY	12	3	98.1
Dwr Cymru Welsh Water	River Dulas	CSO AT BETTWYS YN RHOS SPORTS GROUND	4	3	80.1
Dwr Cymru Welsh Water	Conwy Estuary	DEGANWY ROAD DEGANWY	2	0	97.2
Dwr Cymru Welsh Water	River Wydden	CONWY ROAD STORM PS	1	0	99.9
Dwr Cymru Welsh Water	Gyffin	ST. AGNES ROAD CSO	1	0	99.9
Dwr Cymru Welsh Water	Conway Bay	LLANFAIRFECHAN HOSPITAL SPS	1	0	99.9
Dwr Cymru Welsh Water	Gyffin	HENDRE ROAD SSO	1	0	99.9
Dwr Cymru Welsh Water	Unnamed Ditch	DEGANWY BEACH SPS	1	0	99.9
Dwr Cymru Welsh Water	Estuarial Waters	Meirion Road PS (Storm/Emerg)	0	0	99.9
Dwr Cymru Welsh Water	River Llugwy	Betws y Coed WwTW Settled Storm	0	0	99.9
Dwr Cymru Welsh Water	River Conwy	CSO NEAR PS NO 2 TREFRIW	0	0	0

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

Analysing sewage pollution by the Water Industry

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Bangor Aberconwy Polluted by sewage 4,389 times in 2024 lasting 42,673 hours - That's 4.94 years! Monitoring was disabled in some locations, so could be more

Bangor Aberconwy