Ceredigion Preseli

Polluted by sewage 8,252 times in 2024 lasting 94,836 hours - That's 10.98 years!

Monitoring fell below 50% in some locations so could be more

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✔ means we have experimental daily data since 2023

Totals for Ceredigion Preseli in 2024

121 Sites polluted by Dwr Cymru Welsh Water

8,252 sewage dumps

94,836 hours duration

That's 10.98 years! On average 22.6 times a day

Change Over Time

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Constituencies near Ceredigion Preseli

Waterways in Ceredigion Preseli

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Ceredigion Preseli 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 2 of the total 126 CSO locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Cleddau	SCLEDDAU EO AND CSO	189	3,997	99.8
Dwr Cymru Welsh Water	River Taf	Hermon STW Storm Overflow Hermon	191	3,354	99.8
Dwr Cymru Welsh Water	River Teifi	TREGARON WWTW TREGARON CEREDIGION	159	3,338	99.8
Dwr Cymru Welsh Water	River Rhydyfallen	MAENCLOCHOG STW CLYNDERWEN	194	3,204	99.9
Dwr Cymru Welsh Water	Nant Cledlyn	CWRT NEWYDD STW STORM OVERFLOW	222	3,181	99.5
Dwr Cymru Welsh Water	Nant Verwig	Settled Storm Overflow at Ferwig Wastewater Treatment Works	147	3,143	99
Dwr Cymru Welsh Water	River Teifi Estuary	Cardigan WwTW (STW) Cardigan Settled Storm	277	2,685	99.8
Dwr Cymru Welsh Water	Aber Bach	Dinas Cross SPS	131	2,528	99.8
Dwr Cymru Welsh Water	River Taf	Settled Storm Overflow at Llanfyrnach Wastewater Treatment Works	107	2,448	100
Dwr Cymru Welsh Water	Newport Bay	CWM SEWAGE PUMPING STATION	140	2,360	99.8
Dwr Cymru Welsh Water	River Anghof	PUNCHESTON Wastewater Treatment Works	144	2,285	99.5
Dwr Cymru Welsh Water	Nant Medini	BEULAH WWTW INLET SO BEULAH CERED'N	211	2,160	99.9
Dwr Cymru Welsh Water	River Arth	CSO at Pennant STW	291	2,154	98.5
Dwr Cymru Welsh Water	Nant Cledyn	CWRTNEWYDD STW CWRTNEWTDD	146	2,029	100
Dwr Cymru Welsh Water	Aberdraw Stream	CSO at Trevine STW	181	1,955	99.8
Dwr Cymru Welsh Water	Nevern	Felindre Farchog SPS	102	1,943	98.5
Dwr Cymru Welsh Water	River Cledan	CROSS INN / NEBO STW CSO	117	1,905	98.9
Dwr Cymru Welsh Water	River Teifi	Llechryd SPS	106	1,853	99.4
Dwr Cymru Welsh Water	River Morgenau	CSO at Boncath Wastewater Treatment Works	156	1,776	98.1
Dwr Cymru Welsh Water	River Nevern	Blaenffos WwTW CSO	92	1,744	100
Dwr Cymru Welsh Water	River Taf, Via Surface Water Sewer	Llanfrynach SPS	100	1,695	99.8
Dwr Cymru Welsh Water	River Denys	Silian PS Lampeter Ceredigion	93	1,636	98.8
Dwr Cymru Welsh Water	River Grannell	CSO at Cribyn WwTW, Ceredigion	130	1,600	78.8
Dwr Cymru Welsh Water	River Nevern	CRYMYCH STW	153	1,494	97.2
Dwr Cymru Welsh Water	River Teifi	TEIFI TERRACE CSO	179	1,445	91.4
Dwr Cymru Welsh Water	River Teifi	ST DOGMAELS NORTH END PS CSO AND EO	82	1,431	99
Dwr Cymru Welsh Water	River Lethi	GILFACHREDA CSO NEWQUAY CEREDIGION	98	1,410	99.3
Dwr Cymru Welsh Water	River Teifi	Cilgerran No 1 SPS	111	1,406	99.6
Dwr Cymru Welsh Water	Bow Street Brook	BOW STREET SPS BOW STREET	94	1,325	99.8
Dwr Cymru Welsh Water	River Gwaun	CSO at LLANYCHAER STW	97	1,311	99.8
Dwr Cymru Welsh Water	Nant Collen	Storm Overflow at Rhydlewis Wastewater Treatment Works	77	1,146	98.5
Dwr Cymru Welsh Water	River Ystwyth	LLANFARIAN WWTW LLANFARIAN CERED'N	111	1,126	99.57
Dwr Cymru Welsh Water	River Morgenau	BONCATH STW	88	1,119	100
Dwr Cymru Welsh Water	River Nant Cledlyn	Dolwen SPS	87	1,110	99.7
Dwr Cymru Welsh Water	River Teifi	Cilgerran Flyght PS	66	1,072	85.8
Dwr Cymru Welsh Water	River Pilau	Pen Y Bryn PS	109	1,050	99.8
Dwr Cymru Welsh Water	Afan Daulan	Iron Duke Clynderwen SPS	75	987	100
Dwr Cymru Welsh Water	Coastal Waters Of Cardigan Bay	ABERAERON PS EOF	74	964	99.8
Dwr Cymru Welsh Water	River Grannell	Cribyn Wastewater treament works	91	953	60
Dwr Cymru Welsh Water	River Taf	CSO at Glogue STW	95	938	99.8
Dwr Cymru Welsh Water	River Taf	LLANFYRNACH WWTW LLANFYRNACH PEMBS	49	875	99.8
Dwr Cymru Welsh Water	River Llethi	LLANARTH BRIDGE CSO LLANARTH CERE'N	88	811	97.4
Dwr Cymru Welsh Water	River Teifi	CSO at Rear of Teifi Inn PH, St Dogmaels	57	798	98.8
Dwr Cymru Welsh Water	River Brennig	Tregaron SPS (CSO and EO	107	745	99.3
Dwr Cymru Welsh Water	Nant Arberth	Llachryd Main SPS	51	695	99.8
Dwr Cymru Welsh Water	Nant Collen	RHYDLEWIS PS NO 1	73	666	98.7
Dwr Cymru Welsh Water	Lower Town Harbour, Fishguard	Fishguard Lower Town SPS	84	657	100
Dwr Cymru Welsh Water	River Teifi	LAMPETER STW LAMPETER	76	654	99.4
Dwr Cymru Welsh Water	Coastal Waters At Llansaintffriad	Llansantffraid SPS	65	654	99.3
Dwr Cymru Welsh Water	River Drywi	LLWYNCELYN STW	72	647	98.6
Dwr Cymru Welsh Water	River Iago	Penrhiwllan SPS	46	637	99.1
Dwr Cymru Welsh Water	Coastal Waters Off Llanina Pt	LLANINA WWTW/LL OLD H'DWATERS PS	48	630	99.8
Dwr Cymru Welsh Water	River Taff	Hermon Wastewater Treatment Works	32	629	100
Dwr Cymru Welsh Water	Teifi	CARDIGAN 2	188	549	83.1
Dwr Cymru Welsh Water	Aberporth Coastal Waters	ABERPORTH STW ABERPORTH ,	52	542	99.8
Dwr Cymru Welsh Water	River Brefi	Llanddewi Brefi CSO	73	530	98.6
Dwr Cymru Welsh Water	Sea	DINAS STW . .	70	519	98.7
Dwr Cymru Welsh Water	Nant Hafren	EGLWYSWRW WWTW EGLWYSWRW NR NWPRT	30	507	99.7
Dwr Cymru Welsh Water	River Teifi	CILGERRAN STW	54	500	99.9
Dwr Cymru Welsh Water	Goodwick Brook	Parrog Goodwick SPS	56	474	99.9
Dwr Cymru Welsh Water	Cardigan Bay	LLANGRANOG WWTW LLANGRANOG	99	411	99.6
Dwr Cymru Welsh Water	Coastal Water Off Llanina Pt	LLANINA WWTW PS LLANINA NEW QUAY	31	395	99.8
Dwr Cymru Welsh Water	Nant Medini	BEULAH WWTW INLET SO BEULAH CERED'N	55	379	93.3
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Slade SPS	57	366	99.3
Dwr Cymru Welsh Water	River Brefi	LLANDEWI BREFI WWTW LLANDEWI BREFI	29	324	99.3
Dwr Cymru Welsh Water	Aberystwyth Harbour	WATER ST.SWO.ABERAERON ABERAE	45	298	98.8
Dwr Cymru Welsh Water	River Teifi	Abercych SPS	84	287	99.7
Dwr Cymru Welsh Water	River Teifi	ADPAR WWTW ADPAR CEREDIGION	17	281	99.6
Dwr Cymru Welsh Water	River Mydr	Mydroilyn WwTW Storm Overflow	59	278	54.7
Dwr Cymru Welsh Water	River Clettwr	SPS at Talgarreg WWTW	45	236	99.6
Dwr Cymru Welsh Water	River Rheidol	TAN Y CAE PUMPING STATION ABERYSTY	21	231	99.6
Dwr Cymru Welsh Water	Pont Shan Brook	CLYNDERWEN STW	85	226	99.6
Dwr Cymru Welsh Water	Nevern River	Blaenffos WwTW	19	215	98.5
Dwr Cymru Welsh Water	River Teifi	Cardigan Hospital CSO	58	196	98.5
Dwr Cymru Welsh Water	River Dulas	Newchapel STW CSO	34	191	99.9
Dwr Cymru Welsh Water	Coastal Water	ABERARTH Sewage Pumping Station	23	188	99.5
Dwr Cymru Welsh Water	River Aeron	Brynog Arms Pumping Station	43	180	99.8
Dwr Cymru Welsh Water	River Teifi	HENLLAN STW	36	173	99.8
Dwr Cymru Welsh Water	River Wyre	LLANRHYSTUD WWTW CEREDIGION	35	152	99.8
Dwr Cymru Welsh Water	Aberystwyth Harbour	Wellington St CSO Abera Ab	43	142	99.5
Dwr Cymru Welsh Water	River Teifi	Cenarth Wastewater Treatment Works Inlet Storm Overflow	27	133	99.9
Dwr Cymru Welsh Water	Plas Crug Ditch	LLANBADARN PUMPING STATION	13	127	99.8
Dwr Cymru Welsh Water	River Teifi	Storm Overflow at Henllan Wastewater Treatment Works	40	111	97.9
Dwr Cymru Welsh Water	River Teifi	1 TEIFI TERRACE CSO NEWCASTLE EMLYN	33	102	68
Dwr Cymru Welsh Water	Ceri Brook	Ffos-y-ffin CSO	32	98	99.2
Dwr Cymru Welsh Water	River Teifi	Cardigan Bridge PS Cardigan Ceren	18	97	84.4
Dwr Cymru Welsh Water	Aberach Stream	CSO at St Nicholas STW	87	92	99.8
Dwr Cymru Welsh Water	Nant Hawen	PUMPING STATION ADJ TO NANT HAWEN	10	91	72.2
Dwr Cymru Welsh Water	River	NEWCHAPEL STW	13	82	98.3
Dwr Cymru Welsh Water	River Teifi	CARDIGAN PUMPING STATION NO 5	18	74	99.8
Dwr Cymru Welsh Water	River Dulas	Station Terrace CSO Lampeter	39	69	99.8
Dwr Cymru Welsh Water	River Teifi	Gloster Row SPS	24	68	99.7
Dwr Cymru Welsh Water	Goodwick Brook	CSO at Emergent Culvert Goodwick	43	66	98.5
Dwr Cymru Welsh Water	River Teifi	Pontrhydfendigaid PS	21	58	99.7
Dwr Cymru Welsh Water	Drain To Nant Adail	Llanilar CSO at SPS	17	55	99.7
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Ogof Martha SPS	45	52	99.3
Dwr Cymru Welsh Water	Western Cleddau	Castlemorris Wastewater Treatment CSO	15	48	99.6
Dwr Cymru Welsh Water	River Teifi	ST.DOGMAELS JEWSONS CSO MAIN CSO EO	5	40	99.3
Dwr Cymru Welsh Water	River Teifi	CENARTH WWTTW CENARTH CEREDIGION	8	36	99
Dwr Cymru Welsh Water	Unnamed To Ystwyth	PENTRELLYN PS	9	30	99.7
Dwr Cymru Welsh Water	Nant Creuddyn	SHOWFIELD DITCH CSO	35	27	99.8
Dwr Cymru Welsh Water	Coastal Waters	ROCK STREET PS NEW QUAY	5	23	99.5
Dwr Cymru Welsh Water	River Mwldan	GREENFIELD SQUARE CSO CARDIGAN CERE	31	22	99.8
Dwr Cymru Welsh Water	River Rheidol	CSO PONT ABERYSTWYTH ABERYSTWYTH	11	14	99.5
Dwr Cymru Welsh Water	Western Cleddau	MATHRY SPS NR FISHGUARD PEMBROKSHRE	3	13	100
Dwr Cymru Welsh Water	Nant Howni	ABERPORTH P.S. SSO NO.1	1	11	98.9
Dwr Cymru Welsh Water	Unnamed Drainage Ditch	CEI BACH SPS NEWQUAY CEREDIGION	1	7	99.8
Dwr Cymru Welsh Water	Via A Surface Water Pipe To River Teifi	Cardigan Pumping Station No.4	3	5	84.5
Dwr Cymru Welsh Water	River Teifi	BRIDGE STREET CSO LAMPETER	13	4	99.8
Dwr Cymru Welsh Water	Nant Thyd-Y-Fuch Ditch	Cardigan - Penparc CSO	4	2	92
Dwr Cymru Welsh Water	River Rheidol	PENPARCAU S.S. SSO , ,	6	2	98.3
Dwr Cymru Welsh Water	New Quay Bay	CSO 790/CSO 800/CHIP SHOP CSO	6	1	96.6
Dwr Cymru Welsh Water	Nant Guil-Ddu	ABERPORTH P.S. SSO	2	1	99.7
Dwr Cymru Welsh Water	River Grannell	A Sewage Pumping Station at Llanwnen, Llanybydder	2	1	99.8
Dwr Cymru Welsh Water	New Quay Bay	CSO SOUTH JOHN STREET NEW QUAY	3	0	99.6
Dwr Cymru Welsh Water	River Plysgog	PENRALLTDRAW COMBINED SEWER CSO	1	0	15.3
Dwr Cymru Welsh Water	Nant Aeron	4 TOAD HALL CSO	2	0	99.5
Dwr Cymru Welsh Water	Western Cleddau	MATHRY STW NR FISHGUARD PEMBROKSHRE	1	0	99.6
Dwr Cymru Welsh Water	River Teifi	St Dogmaels CSO	1	0	99.4
Dwr Cymru Welsh Water	Fishguard Harbour	FISHGUARD HARBOUR (CRANE) CSO	1	0	91.6
Dwr Cymru Welsh Water	River Nyfer	The Parrog Newport CSO	1	0	15.2
Dwr Cymru Welsh Water	Irish Sea	Tresaith CSO	0	0	99.3
Dwr Cymru Welsh Water	River Rheidol	CSO AT 18 MIN Y DDOL	0	0	98
Dwr Cymru Welsh Water	Porthgain Stream	CROESGOCH WORKS INLET	0	0	100
Dwr Cymru Welsh Water	Porthgain Stream	Croesgoch Wastewater Treatment Works	0	0	99
Dwr Cymru Welsh Water	River Clarach	Clarach STW CSO	0	0	99.8

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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Ceredigion Preseli Polluted by sewage 8,252 times in 2024 lasting 94,836 hours - That's 10.98 years! Monitoring fell below 50% in some locations so could be more

Ceredigion Preseli