Ceredigion was polluted by sewage 5,353 times in 2023
lasting 61,355 hours - that's 7.1 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 in 2023

75 Sites polluted by Dwr Cymru Welsh Water

5,353 sewage dumps
61,355 h duration

That's 7.1 years! On average 14.7 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

Waterways in Ceredigion

Pollution Summary 2023

Here are all the reported sewage overflow totals for Ceredigion 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 2 of the total 85 CSO locations had reporting enabled for less than half the year, of which 2 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 Cynllo	Aberbanc Sewage Pumping Station	184	3,725	99.9
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 Grannell	CSO at Cribyn WwTW, Ceredigion	273	2,424	98.1
Dwr Cymru Welsh Water	River Arth	CSO at Pennant STW	282	2,249	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	River Denys	Silian PS Lampeter Ceredigion	109	2,050	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	Nant Collen	Storm Overflow at Rhydlewis Wastewater Treatment Works	96	1,722	99.8
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	Coastal Waters Off Llanina Pt	LLANINA WWTW/LL OLD H'DWATERS PS	86	1,225	100
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	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	Aberporth Coastal Waters	ABERPORTH STW ABERPORTH ,	70	814	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	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	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 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	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	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	Aberystwyth Harbour	WATER ST.SWO.ABERAERON ABERAE	74	248	98.6
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	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	River Teifi	Gloster Row SPS	21	59	100
Dwr Cymru Welsh Water	River Wyre	LLANRHYSTUD WWTW CEREDIGION	26	44	100
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	Via A Surface Water Pipe To River Teifi	Cardigan Pumping Station No.4	3	8	14.5
Dwr Cymru Welsh Water	River Clarach	Clarach STW CSO	3	3	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	Irish Sea	Tresaith CSO	0	0	99.9
Dwr Cymru Welsh Water	River Rheidol	CSO AT 18 MIN Y DDOL	0	0	99.9
Dwr Cymru Welsh Water	Nant Guil-Ddu	ABERPORTH P.S. SSO	0	0	100
Dwr Cymru Welsh Water	Nant Aeron	4 TOAD HALL CSO	0	0	100
Dwr Cymru Welsh Water	Unnamed Drainage Ditch	CEI BACH SPS NEWQUAY CEREDIGION	0	0	100
Dwr Cymru Welsh Water	Teifi	LAMPETER STORM PUMPS . .	0	0	0
Dwr Cymru Welsh Water	River Drywi	Llwyncelyn STW Settled Storm	0	0	0
Dwr Cymru Welsh Water	Nant Howni	ABERPORTH P.S. SSO NO.1	0	0	100
Dwr Cymru Welsh Water	River Mydr	Mydroilyn WwTW Storm Overflow	0	0	100
Dwr Cymru Welsh Water	New Quay Bay	CSO SOUTH JOHN STREET NEW QUAY	0	0	100

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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