Join Us 3rd November 2024 - London

March for Clean Water

Ceredigion Preseli was polluted by sewage 8,923 times in 2023
lasting 114,040 hours - that's 13.2 years!
- but monitoring was disabled in some locations, so could be more

Select the constituency from the drop-down

Constituency

✔ means we have experimental daily data since 2023

Totals for Ceredigion Preseli in 2023

116 Sites polluted by Dwr Cymru Welsh Water

8,923 sewage dumps
114,040 h duration

That's 13.2 years! On average 24.4 times a day

Change Over Time

Take Action

Your local MP is Ben Lake (Plaid Cymru) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near Ceredigion Preseli

Waterways in Ceredigion Preseli

Pollution Summary 2023

Here are all the reported sewage overflow totals for Ceredigion Preseli in 2023. 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 4 of the total 131 CSO locations had reporting enabled for less than half the year, of which 4 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Nant Cledlyn	CWRT NEWYDD STW STORM OVERFLOW	353	5,012	95.7
Dwr Cymru Welsh Water	River Taf	Hermon STW Storm Overflow Hermon	214	3,888	99.9
Dwr Cymru Welsh Water	River Cynllo	Aberbanc Sewage Pumping Station	184	3,725	99.9
Dwr Cymru Welsh Water	River Taf	Settled Storm Overflow at Llanfyrnach Wastewater Treatment Works	168	3,585	100
Dwr Cymru Welsh Water	River Teifi	ALLTYBLACA PS ALLTYBLACCA LLANYBYDD	175	3,499	92.2
Dwr Cymru Welsh Water	River Teifi Estuary	Cardigan WwTW (STW) Cardigan Settled Storm	314	3,308	99.9
Dwr Cymru Welsh Water	Nant Medini	BEULAH WWTW INLET SO BEULAH CERED'N	260	3,253	100
Dwr Cymru Welsh Water	River Cleddau	SCLEDDAU EO AND CSO	153	3,161	100
Dwr Cymru Welsh Water	River Anghof	Puncheston WwTW Inlet CSO	160	2,915	100
Dwr Cymru Welsh Water	River Teifi	ST DOGMAELS NORTH END PS CSO AND EO	130	2,592	99.9
Dwr Cymru Welsh Water	Newport Bay	CWM SEWAGE PUMPING STATION	142	2,548	99.8
Dwr Cymru Welsh Water	River Grannell	CSO at Cribyn WwTW, Ceredigion	273	2,424	98.1
Dwr Cymru Welsh Water	River Nevern	Blaenffos WwTW CSO	126	2,343	100
Dwr Cymru Welsh Water	River Morgenau	CSO at Boncath Wastewater Treatment Works	147	2,310	99.7
Dwr Cymru Welsh Water	River Arth	CSO at Pennant STW	282	2,249	100
Dwr Cymru Welsh Water	River Rhydyfallen	MAENCLOCHOG STW CLYNDERWEN	118	2,202	100
Dwr Cymru Welsh Water	River Teifi	Cilgerran No 1 SPS	139	2,169	99.9
Dwr Cymru Welsh Water	River Taf, Via Surface Water Sewer	Llanfrynach SPS	114	2,098	100
Dwr Cymru Welsh Water	River Teifi	Llechryd SPS	118	2,073	99.9
Dwr Cymru Welsh Water	River Teifi	TEIFI TERRACE CSO	191	2,071	97.8
Dwr Cymru Welsh Water	Aberdraw Stream	CSO at Trevine STW	162	2,059	100
Dwr Cymru Welsh Water	River Denys	Silian PS Lampeter Ceredigion	109	2,050	99.9
Dwr Cymru Welsh Water	Aber Bach	Dinas Cross SPS	109	1,991	99.9
Dwr Cymru Welsh Water	Nant Verwig	Settled Storm Overflow at Ferwig Wastewater Treatment Works	91	1,939	100
Dwr Cymru Welsh Water	River Lethi	GILFACHREDA CSO NEWQUAY CEREDIGION	115	1,920	69.3
Dwr Cymru Welsh Water	River Teify	TREGARON WWTW TREGARON CEREDIGION	100	1,893	100
Dwr Cymru Welsh Water	River Cledan	CROSS INN / NEBO STW CSO	108	1,882	100
Dwr Cymru Welsh Water	River Nevern	CRYMYCH STW	155	1,734	98.8
Dwr Cymru Welsh Water	Afan Daulan	Iron Duke Clynderwen SPS	100	1,724	100
Dwr Cymru Welsh Water	Nant Collen	Storm Overflow at Rhydlewis Wastewater Treatment Works	96	1,722	99.8
Dwr Cymru Welsh Water	River Gwaun	CSO at LLANYCHAER STW	97	1,664	99.9
Dwr Cymru Welsh Water	Nevern	Felindre Farchog SPS	87	1,592	100
Dwr Cymru Welsh Water	River Taf	CSO at Glogue STW	126	1,585	99.9
Dwr Cymru Welsh Water	River Rhydyfallen-Uatroy Of Eastern Cleddau	CSO at Maenclochog STW	96	1,443	100
Dwr Cymru Welsh Water	River Ystwyth	LLANFARIAN WWTW LLANFARIAN CERED'N	153	1,392	100
Dwr Cymru Welsh Water	Coastal Waters Of Cardigan Bay	ABERAERON PS EOF	88	1,378	99.7
Dwr Cymru Welsh Water	Bow Street Brook	BOW STREET SPS BOW STREET	79	1,293	100
Dwr Cymru Welsh Water	River Teifi	Settled Storm Overflow at Cilgerran Wastewater Treatment Works	110	1,261	98.7
Dwr Cymru Welsh Water	Coastal Waters Off Llanina Pt	LLANINA WWTW/LL OLD H'DWATERS PS	86	1,225	100
Dwr Cymru Welsh Water	River Pilau	Pen Y Bryn PS	115	1,120	98.7
Dwr Cymru Welsh Water	River Brennig	Tregaron SPS (CSO and EO	125	1,043	100
Dwr Cymru Welsh Water	River Nant Cledlyn	Dolwen SPS	101	1,028	100
Dwr Cymru Welsh Water	Sea	DINAS STW . .	80	963	96.6
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Slade SPS	95	958	100
Dwr Cymru Welsh Water	Coastal Waters At Llansaintffriad	Llansantffraid SPS	67	950	100
Dwr Cymru Welsh Water	River Llethi	LLANARTH BRIDGE CSO LLANARTH CERE'N	107	940	94.2
Dwr Cymru Welsh Water	River Teifi	LAMPETER STW CSO	86	879	100
Dwr Cymru Welsh Water	River Teifi	CSO at Rear of Teifi Inn PH, St Dogmaels	59	832	99.4
Dwr Cymru Welsh Water	Aberporth Coastal Waters	ABERPORTH STW ABERPORTH ,	70	814	100
Dwr Cymru Welsh Water	Goodwick Brook	Parrog Goodwick SPS	66	811	100
Dwr Cymru Welsh Water	River Teifi	TREGARON WWTW TREGARON CEREDIGION	33	768	100
Dwr Cymru Welsh Water	River Brefi	Llanddewi Brefi CSO	103	761	99
Dwr Cymru Welsh Water	River Drywi	LLWYNCELYN STW	58	748	22.9
Dwr Cymru Welsh Water	River Aeron	Brynog Arms Pumping Station	68	727	99.8
Dwr Cymru Welsh Water	River Teifi	Cilgerran Flyght PS	38	715	86.8
Dwr Cymru Welsh Water	Unnamed Ditch	YNYS LAS PS	43	576	100
Dwr Cymru Welsh Water	River Brefi	LLANDEWI BREFI WWTW LLANDEWI BREFI	34	560	100
Dwr Cymru Welsh Water	Nant Arberth	Llachryd Main SPS	38	552	99.2
Dwr Cymru Welsh Water	Nant Hafren	EGLWYSWRW WWTW EGLWYSWRW NR NWPRT	25	496	100
Dwr Cymru Welsh Water	Cardigan Bay	LLANGRANOG WWTW LLANGRANOG	87	482	100
Dwr Cymru Welsh Water	River Clarach	PS AT CLARACH BAY HOL VILLAGE CLARA	32	449	98.7
Dwr Cymru Welsh Water	River Iago	Penrhiwllan SPS	25	427	100
Dwr Cymru Welsh Water	River Teifi	Adpar WwTW Settled Storm	24	423	100
Dwr Cymru Welsh Water	River Teifi	Abercych SPS	89	390	99.4
Dwr Cymru Welsh Water	River Brefi	Settled Storm Overflow at Llandewi Brefi Wastewater Treatment Works	19	376	100
Dwr Cymru Welsh Water	River Teifi	CARDIGAN PUMPING STATION NO 5	53	368	99.9
Dwr Cymru Welsh Water	Nant Hafren	EGLWYSWRW WWTW EGLWYSWRW NR NWPRT	16	340	100
Dwr Cymru Welsh Water	River Clettwr	SPS at Talgarreg WWTW	63	334	96.9
Dwr Cymru Welsh Water	River Teifi	Storm Overflow at Henllan Wastewater Treatment Works	64	325	100
Dwr Cymru Welsh Water	River Dulas	Newchapel STW CSO	59	322	99
Dwr Cymru Welsh Water	Coastal Water	ABERARTH Sewage Pumping Station	28	291	100
Dwr Cymru Welsh Water	Coastal Water Off Llanina Pt	LLANINA WWTW PS LLANINA NEW QUAY	28	287	100
Dwr Cymru Welsh Water	Lower Town Harbour, Fishguard	Fishguard Lower Town SPS	75	277	100
Dwr Cymru Welsh Water	Aberystwyth Harbour	WATER ST.SWO.ABERAERON ABERAE	74	248	98.6
Dwr Cymru Welsh Water	River Anghof	PUNCHESTON Wastewater Treatment Works	13	245	100
Dwr Cymru Welsh Water	River Teifi	Pontrhydfendigaid PS	77	239	100
Dwr Cymru Welsh Water	River Teifi	Cardigan Hospital CSO	75	238	99.2
Dwr Cymru Welsh Water	Teifi	CARDIGAN 2	49	232	41.3
Dwr Cymru Welsh Water	Nant Collen	RHYDLEWIS PS NO 1	34	214	99.8
Dwr Cymru Welsh Water	River Teifi	Cenarth Wastewater Treatment Works Inlet Storm Overflow	46	202	97.8
Dwr Cymru Welsh Water	River Teifi	LAMPETER STW LAMPETER	13	182	100
Dwr Cymru Welsh Water	Pont Shan Brook	CLYNDERWEN STW	41	163	33.1
Dwr Cymru Welsh Water	Aberystwyth Harbour	Wellington St CSO Abera Ab	56	143	99.7
Dwr Cymru Welsh Water	River Rheidol	TAN Y CAE PUMPING STATION ABERYSTY	17	132	98.3
Dwr Cymru Welsh Water	River Dulas	Station Terrace CSO Lampeter	54	112	100
Dwr Cymru Welsh Water	River Teifi	BRIDGE STREET CSO LAMPETER	20	102	100
Dwr Cymru Welsh Water	Cardigan Bay	GWBERT SEWAGE PUMPING STATION	16	89	100
Dwr Cymru Welsh Water	River Teifi	Cardigan Bridge PS Cardigan Ceren	19	86	99.9
Dwr Cymru Welsh Water	River Teifi	1 TEIFI TERRACE CSO NEWCASTLE EMLYN	24	85	41.8
Dwr Cymru Welsh Water	Ceri Brook	Ffos-y-ffin CSO	31	82	52.9
Dwr Cymru Welsh Water	Plas Crug Ditch	LLANBADARN PUMPING STATION	8	79	99.9
Dwr Cymru Welsh Water	Nant Hawen	PUMPING STATION ADJ TO NANT HAWEN	10	75	80.2
Dwr Cymru Welsh Water	River Rheidol	CSO PONT ABERYSTWYTH ABERYSTWYTH	37	72	100
Dwr Cymru Welsh Water	River Teifi	ADPAR WWTW ADPAR CEREDIGION	5	68	100
Dwr Cymru Welsh Water	Fishguard Harbour	Fishguard Ogof Martha SPS	54	68	100
Dwr Cymru Welsh Water	River Teifi	Gloster Row SPS	21	59	100
Dwr Cymru Welsh Water	Goodwick Brook	CSO at Emergent Culvert Goodwick	38	56	99.5
Dwr Cymru Welsh Water	River Wyre	LLANRHYSTUD WWTW CEREDIGION	26	44	100
Dwr Cymru Welsh Water	Aberach Stream	CSO at St Nicholas STW	36	30	92.2
Dwr Cymru Welsh Water	Coastal Waters	ROCK STREET PS NEW QUAY	5	27	100
Dwr Cymru Welsh Water	Nant Creuddyn	SHOWFIELD DITCH CSO	42	27	99.9
Dwr Cymru Welsh Water	Unnamed To Ystwyth	PENTRELLYN PS	5	21	99.6
Dwr Cymru Welsh Water	River Mwldan	GREENFIELD SQUARE CSO CARDIGAN CERE	31	20	98.9
Dwr Cymru Welsh Water	Drain To Nant Adail	Llanilar CSO at SPS	9	20	99.9
Dwr Cymru Welsh Water	Western Cleddau	Castlemorris Wastewater Treatment CSO	9	17	100
Dwr Cymru Welsh Water	Via A Surface Water Pipe To River Teifi	Cardigan Pumping Station No.4	3	8	14.5
Dwr Cymru Welsh Water	River Teifi	ST.DOGMAELS JEWSONS CSO MAIN CSO EO	4	4	100
Dwr Cymru Welsh Water	River Clarach	Clarach STW CSO	3	3	100
Dwr Cymru Welsh Water	River Plysgog	PENRALLTDRAW COMBINED SEWER CSO	3	2	100
Dwr Cymru Welsh Water	River Grannell	A Sewage Pumping Station at Llanwnen, Llanybydder	3	1	99
Dwr Cymru Welsh Water	River Rheidol	PENPARCAU S.S. SSO , ,	4	1	98.2
Dwr Cymru Welsh Water	New Quay Bay	CSO 790/CSO 800/CHIP SHOP CSO	2	0	88.7
Dwr Cymru Welsh Water	Nant Thyd-Y-Fuch Ditch	Cardigan - Penparc CSO	2	0	94.8
Dwr Cymru Welsh Water	Aberporth Coastal Waters	ABERPORTH HEADLAND PS ABERPORTH ,	1	0	100
Dwr Cymru Welsh Water	River Teifi	St Dogmaels CSO	1	0	92.4
Dwr Cymru Welsh Water	River Teifi	CILGERRAN STW	1	0	100
Dwr Cymru Welsh Water	New Quay Bay	CSO SOUTH JOHN STREET NEW QUAY	0	0	100
Dwr Cymru Welsh Water	River Drywi	Llwyncelyn STW Settled Storm	0	0	0
Dwr Cymru Welsh Water	River Nyfer	The Parrog Newport CSO	0	0	0
Dwr Cymru Welsh Water	Nant Guil-Ddu	ABERPORTH P.S. SSO	0	0	100
Dwr Cymru Welsh Water	River Mydr	Mydroilyn WwTW Storm Overflow	0	0	100
Dwr Cymru Welsh Water	Nant Aeron	4 TOAD HALL CSO	0	0	100
Dwr Cymru Welsh Water	Nant Howni	ABERPORTH P.S. SSO NO.1	0	0	100
Dwr Cymru Welsh Water	Unnamed Drainage Ditch	CEI BACH SPS NEWQUAY CEREDIGION	0	0	100
Dwr Cymru Welsh Water	Irish Sea	Tresaith CSO	0	0	99.9
Dwr Cymru Welsh Water	Porthgain Stream	CROESGOCH WORKS INLET	0	0	100
Dwr Cymru Welsh Water	Western Cleddau	MATHRY SPS NR FISHGUARD PEMBROKSHRE	0	0	100
Dwr Cymru Welsh Water	River Rheidol	CSO AT 18 MIN Y DDOL	0	0	99.9
Dwr Cymru Welsh Water	Pont Shan Brook	CLYNDERWEN WWTW INLET CSO	0	0	0
Dwr Cymru Welsh Water	Fishguard Harbour	FISHGUARD HARBOUR (CRANE) CSO	0	0	100
Dwr Cymru Welsh Water	Teifi	LAMPETER STORM PUMPS . .	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

With generous support from:

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can

Yes! Support TOTP!