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Live data for Ceredigion Preseli in 2026

So far this year (as of 26 Oct 2026, 05:15) there has been 53,364 hours of sewage overflows, from 130 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 6.18 years!

Totals for Ceredigion Preseli in 2025

119 Sites polluted by Dwr Cymru Welsh Water

7,671 sewage dumps

93,304 hours duration

Sewage pollution map of Ceredigion Preseli: 7,671 spills in 2025, lasting 93,304 hours, by Dwr Cymru Welsh Water

That's 10.8 years. On average 21 times a day

Change Over Time

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Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Nant Cledyn	CWRTNEWYDD STW CWRTNEWTDD	363	4,408	99.9
Dwr Cymru Welsh Water	River Morgenau	BONCATH STW	190	3,409	99.8
Dwr Cymru Welsh Water	River Teifi	ALLTYBLACA PS ALLTYBLACCA LLANYBYDD	162	3,165	99.9
Dwr Cymru Welsh Water	River Grannell	Cribyn Wastewater treament works	209	2,815	99.6
Dwr Cymru Welsh Water	River Taf	LLANFYRNACH WWTW LLANFYRNACH PEMBS	138	2,802	99.9
Dwr Cymru Welsh Water	River Cynllo	Aberbanc Sewage Pumping Station	139	2,781	99.9
Dwr Cymru Welsh Water	River Cleddau	SCLEDDAU EO AND CSO	150	2,763	99.9
Dwr Cymru Welsh Water	River Taff	Hermon Wastewater Treatment Works	163	2,506	94.3
Dwr Cymru Welsh Water	River Rhydyfallen	MAENCLOCHOG STW CLYNDERWEN	156	2,174	99
Dwr Cymru Welsh Water	River Teifi	TREGARON WWTW TREGARON CEREDIGION	110	2,128	99.9
Dwr Cymru Welsh Water	Nant Verwig	Settled Storm Overflow at Ferwig Wastewater Treatment Works	109	2,119	99.9
Dwr Cymru Welsh Water	River Denys	Silian PS Lampeter Ceredigion	93	2,037	99.9
Dwr Cymru Welsh Water	Newport Bay	CWM SEWAGE PUMPING STATION	106	1,946	99.3
Dwr Cymru Welsh Water	Aber Bach	Dinas Cross SPS	100	1,912	99.9
Dwr Cymru Welsh Water	River Teifi	ST DOGMAELS NORTH END PS CSO AND EO	94	1,860	99.9
Dwr Cymru Welsh Water	Nevern	Felindre Farchog SPS	99	1,858	99.8
Dwr Cymru Welsh Water	River Anghof	PUNCHESTON Wastewater Treatment Works	116	1,813	99.9
Dwr Cymru Welsh Water	River Teifi	Cilgerran No 1 SPS	104	1,798	99.9
Dwr Cymru Welsh Water	River Lethi	GILFACHREDA CSO NEWQUAY CEREDIGION	103	1,687	99.9
Dwr Cymru Welsh Water	Nant Medini	BEULAH WWTW INLET SO BEULAH CERED'N	173	1,592	99.9
Dwr Cymru Welsh Water	River Teifi	TEIFI TERRACE CSO	133	1,545	96.3
Dwr Cymru Welsh Water	River Teifi	CARDIGAN WWTW(STW) CARDIGAN	182	1,498	100
Dwr Cymru Welsh Water	Bow Street Brook	BOW STREET SPS BOW STREET	74	1,478	99.8
Dwr Cymru Welsh Water	River Nevern	CRYMYCH STW	131	1,475	99.9
Dwr Cymru Welsh Water	Coastal Waters At Pwll Gwaelod	DINAS STW , ,	78	1,420	99.9
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Slade SPS	94	1,398	99.6
Dwr Cymru Welsh Water	River Taf, Via Surface Water Sewer	Llanfrynach SPS	82	1,384	99.9
Dwr Cymru Welsh Water	Porthgain Stream	Croesgoch Wastewater Treatment Works	67	1,335	99
Dwr Cymru Welsh Water	River Teifi	Llechryd SPS	90	1,309	99.7
Dwr Cymru Welsh Water	Nant Clydan	CROSS INN / NEBO STW , ,	65	1,257	99.8
Dwr Cymru Welsh Water	River Gwaun	CSO at LLANYCHAER STW	75	1,239	99.9
Dwr Cymru Welsh Water	River Teifi	Cilgerran Flyght PS	62	1,211	99.8
Dwr Cymru Welsh Water	Nant Collen	RHYDLEWIS PS NO 1	73	1,208	99.9
Dwr Cymru Welsh Water	Afan Daulan	Iron Duke Clynderwen SPS	71	1,197	99.9
Dwr Cymru Welsh Water	River Ystwyth	LLANFARIAN WWTW LLANFARIAN CERED'N	111	1,118	99.9
Dwr Cymru Welsh Water	River Nant Cledlyn	Dolwen SPS	71	1,084	99.7
Dwr Cymru Welsh Water	River Pilau	Pen Y Bryn PS	102	1,082	99.9
Dwr Cymru Welsh Water	River Drywi	LLWYNCELYN STW	82	1,077	99.9
Dwr Cymru Welsh Water	Coastal Waters At Llansaintffriad	Llansantffraid SPS	77	1,022	99.8
Dwr Cymru Welsh Water	River Llethi	LLANARTH BRIDGE CSO LLANARTH CERE'N	95	988	99.8
Dwr Cymru Welsh Water	Aberporth Coastal Waters	ABERPORTH STW ABERPORTH ,	70	975	99.9
Dwr Cymru Welsh Water	Coastal Waters Of Cardigan Bay	ABERAERON PS EOF	67	942	99.9
Dwr Cymru Welsh Water	River Teifi	CSO at Rear of Teifi Inn PH, St Dogmaels	62	939	99.3
Dwr Cymru Welsh Water	Goodwick Brook	Parrog Goodwick SPS	73	882	99.9
Dwr Cymru Welsh Water	River Clarach	PS AT CLARACH BAY HOL VILLAGE CLARA	46	830	99.8
Dwr Cymru Welsh Water	River Teifi Estuary	Cardigan WwTW (STW) Cardigan Settled Storm	95	811	99.5
Dwr Cymru Welsh Water	River Mydr	Mydroilyn WwTW Storm Overflow	122	745	99.9
Dwr Cymru Welsh Water	River Arth	CSO at Pennant STW	201	714	75.7
Dwr Cymru Welsh Water	River Iago	Penrhiwllan SPS	49	697	99.9
Dwr Cymru Welsh Water	River Brefi	LLANDEWI BREFI WWTW LLANDEWI BREFI	49	694	98.8
Dwr Cymru Welsh Water	Teifi	CARDIGAN 2	106	665	99.2
Dwr Cymru Welsh Water	Nevern River	Blaenffos WwTW	43	630	99.6
Dwr Cymru Welsh Water	Lower Town Harbour, Fishguard	Fishguard Lower Town SPS	84	599	99.9
Dwr Cymru Welsh Water	Cardigan Bay	LLANGRANOG WWTW LLANGRANOG	74	562	99.7
Dwr Cymru Welsh Water	River Taf	CSO at Glogue STW	60	535	99.8
Dwr Cymru Welsh Water	River	NEWCHAPEL STW	56	519	99.9
Dwr Cymru Welsh Water	Unnamed Ditch	YNYS LAS PS	39	517	99.8
Dwr Cymru Welsh Water	River Teifi	LAMPETER STW LAMPETER	74	483	100
Dwr Cymru Welsh Water	River Brennig	Tregaron SPS (CSO and EO	42	461	99.8
Dwr Cymru Welsh Water	Nant Hafren	EGLWYSWRW WWTW EGLWYSWRW NR NWPRT	26	422	99.9
Dwr Cymru Welsh Water	River Teifi	Cardigan Hospital CSO	72	387	98
Dwr Cymru Welsh Water	River Teifi	1 TEIFI TERRACE CSO NEWCASTLE EMLYN	72	387	98.1
Dwr Cymru Welsh Water	Coastal Waters Off Llanina Pt	LLANINA WWTW/LL OLD H'DWATERS PS	58	366	99.7
Dwr Cymru Welsh Water	River Brefi	Llanddewi Brefi CSO	49	345	96.3
Dwr Cymru Welsh Water	Sea	DINAS STW . .	28	318	99.7
Dwr Cymru Welsh Water	Nant Hawen	PUMPING STATION ADJ TO NANT HAWEN	29	303	99.9
Dwr Cymru Welsh Water	River Clettwr	SPS at Talgarreg WWTW	50	278	99.2
Dwr Cymru Welsh Water	Aberdraw Stream	CSO at Trevine STW	41	274	99.7
Dwr Cymru Welsh Water	River Teifi	HENLLAN STW	43	273	99.9
Dwr Cymru Welsh Water	Nant Arberth	Llachryd Main SPS	29	269	99.9
Dwr Cymru Welsh Water	Aberdraw Stream	TREVINE STW	57	268	99.9
Dwr Cymru Welsh Water	River Cledan	CROSS INN / NEBO STW CSO	16	254	100
Dwr Cymru Welsh Water	River Teifi	CILGERRAN STW	34	206	99.9
Dwr Cymru Welsh Water	River Teifi	Abercych SPS	83	197	99.9
Dwr Cymru Welsh Water	River Teifi	ADPAR WWTW ADPAR CEREDIGION	14	195	99.8
Dwr Cymru Welsh Water	Aberystwyth Harbour	Wellington St CSO Abera Ab	52	188	99.5
Dwr Cymru Welsh Water	River Aeron	Brynog Arms Pumping Station	60	187	99.9
Dwr Cymru Welsh Water	River Teifi	ST.DOGMAELS JEWSONS CSO MAIN CSO EO	24	176	99.9
Dwr Cymru Welsh Water	Aberach Stream	CSO at St Nicholas STW	79	169	99.8
Dwr Cymru Welsh Water	Coastal Water	ABERARTH Sewage Pumping Station	15	158	99.9
Dwr Cymru Welsh Water	River Teifi	Cardigan Bridge PS Cardigan Ceren	27	151	99.9
Dwr Cymru Welsh Water	River Rheidol	TAN Y CAE PUMPING STATION ABERYSTY	16	138	99.9
Dwr Cymru Welsh Water	River Teifi	Pontrhydfendigaid PS	52	132	99.9
Dwr Cymru Welsh Water	Ceri Brook	Ffos-y-ffin CSO	40	132	97.8
Dwr Cymru Welsh Water	River Teifi	CARDIGAN PUMPING STATION NO 5	20	112	99.9
Dwr Cymru Welsh Water	Aberystwyth Harbour	WATER ST.SWO.ABERAERON ABERAE	32	104	99.4
Dwr Cymru Welsh Water	River Teifi	CENARTH WWTTW CENARTH CEREDIGION	34	102	99.9
Dwr Cymru Welsh Water	River Wyre	LLANRHYSTUD WWTW CEREDIGION	30	101	99.9
Dwr Cymru Welsh Water	River Dulas	Station Terrace CSO Lampeter	45	80	99.9
Dwr Cymru Welsh Water	Goodwick Brook	CSO at Emergent Culvert Goodwick	49	68	98.5
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Ogof Martha SPS	51	58	99.9
Dwr Cymru Welsh Water	Coastal Water Off Llanina Pt	LLANINA WWTW PS LLANINA NEW QUAY	6	49	99.8
Dwr Cymru Welsh Water	Plas Crug Ditch	LLANBADARN PUMPING STATION	10	43	99.9
Dwr Cymru Welsh Water	River Teifi	Gloster Row SPS	17	42	99.8
Dwr Cymru Welsh Water	River Mwldan	GREENFIELD SQUARE CSO CARDIGAN CERE	44	40	99.9
Dwr Cymru Welsh Water	Nant Creuddyn	SHOWFIELD DITCH CSO	34	37	99.9
Dwr Cymru Welsh Water	Cardigan Bay	GWBERT SEWAGE PUMPING STATION	10	27	99.3
Dwr Cymru Welsh Water	Drain To Nant Adail	Llanilar CSO at SPS	6	19	99.9
Dwr Cymru Welsh Water	Nant Thyd-Y-Fuch Ditch	Cardigan - Penparc CSO	12	16	69.1
Dwr Cymru Welsh Water	Pont Shan Brook	CLYNDERWEN STW	7	15	99.9
Dwr Cymru Welsh Water	Coastal Waters	ROCK STREET PS NEW QUAY	6	15	99.8
Dwr Cymru Welsh Water	River Grannell	A Sewage Pumping Station at Llanwnen, Llanybydder	4	14	99.9
Dwr Cymru Welsh Water	River Plysgog	PENRALLTDRAW COMBINED SEWER CSO	12	13	95.9
Dwr Cymru Welsh Water	River Teifi	BRIDGE STREET CSO LAMPETER	23	12	99.9
Dwr Cymru Welsh Water	Via A Surface Water Pipe To River Teifi	Cardigan Pumping Station No.4	6	8	96.7
Dwr Cymru Welsh Water	Western Cleddau	Castlemorris Wastewater Treatment CSO	11	6	99.9
Dwr Cymru Welsh Water	Nant Howni	ABERPORTH P.S. SSO NO.1	2	2	99.9
Dwr Cymru Welsh Water	New Quay Bay	CSO SOUTH JOHN STREET NEW QUAY	7	2	99.9
Dwr Cymru Welsh Water	River Nyfer	The Parrog Newport CSO	5	1	99.9
Dwr Cymru Welsh Water	New Quay Bay	CSO 790/CSO 800/CHIP SHOP CSO	5	1	94.3
Dwr Cymru Welsh Water	Fishguard Harbour	FISHGUARD HARBOUR (CRANE) CSO	2	1	99.9
Dwr Cymru Welsh Water	River Rheidol	PENPARCAU S.S. SSO , ,	4	1	99.5
Dwr Cymru Welsh Water	Unnamed To Ystwyth	PENTRELLYN PS	1	1	99.9
Dwr Cymru Welsh Water	River Rheidol	CSO PONT ABERYSTWYTH ABERYSTWYTH	1	0	99.9
Dwr Cymru Welsh Water	Unnamed Drainage Ditch	CEI BACH SPS NEWQUAY CEREDIGION	1	0	99.9
Dwr Cymru Welsh Water	Nant Aeron	4 TOAD HALL CSO	1	0	100
Dwr Cymru Welsh Water	Aberporth Coastal Waters	ABERPORTH HEADLAND PS ABERPORTH ,	1	0	99.8
Dwr Cymru Welsh Water	Nant Guil-Ddu	ABERPORTH P.S. SSO	1	0	99.9
Dwr Cymru Welsh Water	Western Cleddau	MATHRY STW NR FISHGUARD PEMBROKSHRE	1	0	99.9
Dwr Cymru Welsh Water	River Rheidol	CSO AT 18 MIN Y DDOL	0	0	95.8
Dwr Cymru Welsh Water	River Clarach	Clarach STW CSO	0	0	99.8
Dwr Cymru Welsh Water	Coastal Waters Off Llanina Poi	LLANINA WWTW/LL OLD H'DWATERS PS	0	0	100
Dwr Cymru Welsh Water	River Teifi	St Dogmaels CSO	0	0	99
Dwr Cymru Welsh Water	Nant Collen	Storm Overflow at Rhydlewis Wastewater Treatment Works	0	0	0
Dwr Cymru Welsh Water	Irish Sea	Tresaith CSO	0	0	99.9

Ceredigion Preseli

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Live data for Ceredigion Preseli in 2026

Totals for Ceredigion Preseli in 2025

119 Sites polluted by Dwr Cymru Welsh Water

Change Over Time

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