Top of the Poops | Constituency Sewage Map - 2025 Data| Ceredigion Preseli

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You're looking at the totals that we have calculated for sewage in Ceredigion Preseli for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Totals for Ceredigion Preseli in 2025

Sewage81,823 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows130

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Cwrtnewydd WwTW Storm Overflow	Nant Cledlyn	267	3,090h 46m	-
Dwr Cymru Welsh Water	Boncath WwTW Storm Overflow	Tributary of Afon Morgenau	149	2,646h 14m	-
Dwr Cymru Welsh Water	Llanfyrnach WwTW Storm Overflow	River Taff	119	2,324h 43m	-
Dwr Cymru Welsh Water	Alltyblaca Overflow	River Teifi	119	2,321h 13m	-
Dwr Cymru Welsh Water	Aberbanc Storm Overflow	Afon Cynllo	107	2,130h 24m	-
Dwr Cymru Welsh Water	Cribyn WwTW Storm Overflow	Afon Granell	181	2,118h 28m	-
Dwr Cymru Welsh Water	Scleddau Storm Overflow	Afon Cledan	113	2,073h 51m	-
Dwr Cymru Welsh Water	Maenclochog WwTW Storm Overflow	Afon Rhydyfallen	133	1,908h 27m	-
Dwr Cymru Welsh Water	Cardigan WwTW Storm Overflow	River Teifi	229	1,770h 39m	-
Dwr Cymru Welsh Water	Tregaron WwTw Storm Overflow	River Teifi	86	1,639h 33m	-
Dwr Cymru Welsh Water	Newport Cwm Storm Overflow	Newport Bay	87	1,631h 57m	-
Dwr Cymru Welsh Water	Felindre Farchog Storm Overflow	River Nevern	85	1,624h 59m	-
Dwr Cymru Welsh Water	Dinas Cross Fishguard Storm Overflow	Tributary of Aber Bach	80	1,597h 10m	-
Dwr Cymru Welsh Water	Puncheston WwTW Storm Overflow	Tributary of Afon Anghof	95	1,564h 29m	-
Dwr Cymru Welsh Water	Dinas Near Fishguard WwTW Overflow	Sea	88	1,552h 7m	-
Dwr Cymru Welsh Water	Verwig WwTW Storm Overflow	Nant Verwig	74	1,515h 12m	-
Dwr Cymru Welsh Water	Nanternis WwTW Overflow	Afon Soden	82	1,499h 14m	-
Dwr Cymru Welsh Water	Silian Storm Overflow	Afon Denys	67	1,477h 23m	-
Dwr Cymru Welsh Water	St. Dogmaels No.2 Storm Overflow	River Teifi	68	1,406h 39m	-
Dwr Cymru Welsh Water	Fishguard Slade Sea Discharge Storm Overflow	Fishguard Harbour	87	1,362h 7m	-
Dwr Cymru Welsh Water	Glennydd Gilfachreda Storm Overflow	Afon Lethi	85	1,361h 51m	-
Dwr Cymru Welsh Water	Cilgerran No.1 Storm Overflow	River Teifi	77	1,340h 51m	-
Dwr Cymru Welsh Water	Croesgoch WwTW Storm Overflow	Porthgain Stream	64	1,335h 15m	-
Dwr Cymru Welsh Water	Crymmych WwTW Storm Overflow	River Nevern	108	1,325h 7m	-
Dwr Cymru Welsh Water	Teifi Terrace No2 Storm Overflow	River Teifi	104	1,311h 32m	-
Dwr Cymru Welsh Water	Ffostrasol WwTW Overflow	Cerdin	150	1,277h 23m	-
Dwr Cymru Welsh Water	Llangeitho WwTW Overflow	River Aeron	84	1,261h 22m	-
Dwr Cymru Welsh Water	Nebo WwTW Storm Overflow	Afon Cledan	65	1,257h 58m	-
Dwr Cymru Welsh Water	Llanfyrnach Storm Overflow	River Taff	70	1,244h 21m	-
Dwr Cymru Welsh Water	Beulah WwTW Storm Overflow	Nant Medini	131	1,232h 14m	-
Dwr Cymru Welsh Water	Bow Street Storm Overflow	River Clarach	64	1,226h 56m	-
Dwr Cymru Welsh Water	Llanychaer WwTW Storm Overflow	River Gwaun	68	1,221h 56m	-
Dwr Cymru Welsh Water	Llechryd No 1 Storm Overflow	River Teifi	72	1,075h 50m	-
Dwr Cymru Welsh Water	Porthgain WwTW Overflow	Cardigan Bay South	68	1,073h 20m	-
Dwr Cymru Welsh Water	Cnwcau Storm Overflow	River Teifi	50	1,037h 15m	-
Dwr Cymru Welsh Water	Dolwen Storm Overflow	Nant Cledlyn	56	1,002h 56m	-
Dwr Cymru Welsh Water	Taliesin Overflow	Afon Leri	59	989h 7m	-
Dwr Cymru Welsh Water	Rhydlewis North PS Storm Overflow	Nant Collen	57	978h 14m	-
Dwr Cymru Welsh Water	Pen-Y-Bryn Storm Overflow	Afon Pilau	87	926h 33m	-
Dwr Cymru Welsh Water	St. Dogmaels Maeshyfryd Street Storm Overflow	River Teifi	51	917h 40m	-
Dwr Cymru Welsh Water	Clynderwen Iron Duke Storm Overflow	Tributary of the Cleddau Ddu	55	910h 59m	-
Dwr Cymru Welsh Water	Llwyncelyn WwTW Storm Overflow	Afon Drywi	65	898h	-
Dwr Cymru Welsh Water	Llanarth Bridge Storm Overflow	Afon Llethi	81	874h 48m	-
Dwr Cymru Welsh Water	Llanon WwTW Storm Overflow	Coastal Waters - Llansaintffraid	60	855h 9m	-
Dwr Cymru Welsh Water	Aberporth WwTW Storm Overflow	Aberporth Coastal Waters	52	822h 23m	-
Dwr Cymru Welsh Water	Llanfarian WwTW Settled Storm Overflow	River Ystwyth	66	810h 13m	-
Dwr Cymru Welsh Water	The Parrog Goodwick Storm Overflow	Goodwick Brook	61	801h 47m	-
Dwr Cymru Welsh Water	Hermon WwTW Storm Overflow	Tributary of Afon Taf	66	707h 25m	-
Dwr Cymru Welsh Water	Clarach Bay Overflow	River Clarach	38	696h 11m	-
Dwr Cymru Welsh Water	Mydroilyn WwTW Storm Overflow	Afon Mydr	97	688h 14m	-
Dwr Cymru Welsh Water	Aberaeron Storm Overflow	Coastal Water - Cardigan Bay	52	671h 13m	-
Dwr Cymru Welsh Water	Llanddewi Brefi WwTW Storm Overflow	Afon Brefi	37	627h 7m	-
Dwr Cymru Welsh Water	Penrhiwllan Storm Overflow	Afon Iago	39	607h 57m	-
Dwr Cymru Welsh Water	Bridge Street Fishguard Storm Overflow	Lower Town Harbour, Fishguard	72	589h 54m	-
Dwr Cymru Welsh Water	St.Mary Street Storm Overflow	River Teifi	93	570h 24m	-
Dwr Cymru Welsh Water	Blaenffos WwTW Storm Overflow	River Nevern	34	554h 7m	-
Dwr Cymru Welsh Water	Llangranog Beach Storm Overflow	Cardigan Bay	62	533h 25m	-
Dwr Cymru Welsh Water	Rhydlewis South WwTW Storm Overflow	Nant Collen	43	512h 24m	-
Dwr Cymru Welsh Water	East of Ynyslas Beach Overflow	Unnamed Ditch	33	471h 51m	-
Dwr Cymru Welsh Water	Pontrhydyceirt WwTW Overflow	Morgenau	23	459h 45m	-
Dwr Cymru Welsh Water	Tregaron Storm Overflow	Afon Brenig	32	424h 42m	-
Dwr Cymru Welsh Water	Pont-Y-Cleifion Storm Overflow	River Teifi	60	400h 28m	-
Dwr Cymru Welsh Water	Glogue WwTW Storm Overflow	River Taff	44	394h 32m	-
Dwr Cymru Welsh Water	Eglwyswrw WwTW Storm Overflow	Nant Hafren	25	373h 44m	-
Dwr Cymru Welsh Water	Llanddewi Brefi Storm Overflow	Afon Brefi	37	330h 13m	-
Dwr Cymru Welsh Water	Trefin WwTW Storm Overflow	Aberdraw Stream	62	314h 40m	-
Dwr Cymru Welsh Water	Pennant WwTW Storm Overflow	Afon Arth	93	312h 46m	-
Dwr Cymru Welsh Water	Newchapel WwTW Storm Overflow	Tributary of Afon Dulas	34	295h 40m	-
Dwr Cymru Welsh Water	Llanfihangel-ar-arth WwTW Overflow	River Teifi	25	276h 52m	-
Dwr Cymru Welsh Water	Henllan Storm Overflow	River Teifi	38	263h 18m	-
Dwr Cymru Welsh Water	Llechryd on Nant Arberth Storm Overflow	Nant Arberth	23	246h 27m	-
Dwr Cymru Welsh Water	Mill View Llangranog Storm Overflow	Nant Hawen	25	241h 30m	-
Dwr Cymru Welsh Water	Teifi Terrace No1 Storm Overflow	River Teifi	37	233h 25m	-
Dwr Cymru Welsh Water	Northeast of Lewis Street Storm Overflow	River Teifi	39	219h 46m	-
Dwr Cymru Welsh Water	Talybont Overflow	Leri - Lower	28	214h 9m	-
Dwr Cymru Welsh Water	Talgarreg WwTW Storm Overflow	Afon Clettwr	37	189h 48m	-
Dwr Cymru Welsh Water	Lampeter Storm Overflow	River Teifi	19	176h 24m	-
Dwr Cymru Welsh Water	Llanina WwTW Storm Overflow	Coastal Waters - Llanina Point	34	176h 3m	-
Dwr Cymru Welsh Water	St Dogmaels Main Storm Overflow	River Teifi	19	168h 43m	-
Dwr Cymru Welsh Water	Abercych Storm Overflow	River Teifi	59	168h 27m	-
Dwr Cymru Welsh Water	Cilgerran WwTW Storm Overflow	River Teifi	28	153h 12m	-
Dwr Cymru Welsh Water	Ystrad Aeron Storm Overflow	Tributary of Afon Aeron	51	148h 32m	-
Dwr Cymru Welsh Water	St Nicholas WwTW Storm Overflow	Tributary of Aberbach Stream	69	142h 24m	-
Dwr Cymru Welsh Water	Harbour Lane Junction Storm Overflow	Aberystwyth Harbour	45	141h 33m	-
Dwr Cymru Welsh Water	Cardigan Bridge Storm Overflow	River Teifi	19	118h 30m	-
Dwr Cymru Welsh Water	Aberarth Storm Overflow	Coastal Water - Cardigan Bay	15	115h 57m	-
Dwr Cymru Welsh Water	Llanfarian WwTW Inlet Storm Overflow	River Ystwyth	13	109h	-
Dwr Cymru Welsh Water	Pontrhydfendigaid Storm Overflow	River Teifi	46	104h 27m	-
Dwr Cymru Welsh Water	Adpar Storm Overflow	River Teifi	8	104h 10m	-
Dwr Cymru Welsh Water	Cenarth WwTW Storm Overflow	River Teifi	25	99h 25m	-
Dwr Cymru Welsh Water	Peniel Lane Storm Overflow	Coastal Waters - Aberaeron	27	98h 1m	-
Dwr Cymru Welsh Water	Ffos-y-ffin Storm Overflow	Ceri Brook	30	96h 33m	-
Dwr Cymru Welsh Water	Cardigan Cattle Market Storm Overflow	River Teifi	16	86h 38m	-
Dwr Cymru Welsh Water	Aberystwyth Tan-Y-Cae Storm Overflow	River Rheidol	12	78h 47m	-
Dwr Cymru Welsh Water	Llanrhystud WwTW Storm Overflow	River Wyre	21	71h 19m	-
Dwr Cymru Welsh Water	Railway Terrace Storm Overflow	Goodwick Brook	34	64h 47m	-
Dwr Cymru Welsh Water	Lampeter Campus Storm Overflow	River Dulais	30	49h 32m	-
Dwr Cymru Welsh Water	Pantycelyn Fishguard Storm Overflow	Coastal Waters - Fishguard Harbour	36	47h 18m	-
Dwr Cymru Welsh Water	Gloster Row Storm Overflow	River Teifi	16	41h 23m	-
Dwr Cymru Welsh Water	Mount Walk Crossroads Storm Overflow	Nant Creudyyn	24	27h 57m	-
Dwr Cymru Welsh Water	Junction of Upper Mwldan and College Row Cardigan Storm Overflow	Afon Mwldan	25	24h 56m	-
Dwr Cymru Welsh Water	Gwbert Overflow	Cardigan Bay	7	21h	-
Dwr Cymru Welsh Water	Llanilar on Clos Henri Storm Overflow	Drain to Nant Adail	5	18h 5m	-
Dwr Cymru Welsh Water	Llanwnnen South Storm Overflow	Afon Grannell	5	14h 55m	-
Dwr Cymru Welsh Water	Wellington Place Car Park Storm Overflow	New Quay Bay	5	13h 12m	-
Dwr Cymru Welsh Water	Llanbadarn Fawr Storm Overflow	Plas Crug Ditch	6	12h 12m	-
Dwr Cymru Welsh Water	New Street Lampeter Storm Overflow	River Teifi	14	10h 43m	-
Dwr Cymru Welsh Water	Quay Street Car Park Storm Overflow	River Teifi	5	10h 42m	-
Dwr Cymru Welsh Water	Waterloo Street Aberaeron Overflow	Cardigan Bay Central	8	10h 5m	-
Dwr Cymru Welsh Water	Off Church Street Cwm Plysgog Storm Overflow	Afon Plysgog	9	9h 56m	-
Dwr Cymru Welsh Water	Clynderwen Final Effulent Storm Overflow	Pont Shan Brook	5	9h 34m	-
Dwr Cymru Welsh Water	Penparc Storm Overflow	Nant Thyd-Y-Fuch Ditch	5	8h 12m	-
Dwr Cymru Welsh Water	Parrog Road Storm Overflow	Tributary of Afon Nyfer	8	7h 26m	-
Dwr Cymru Welsh Water	Castle Morris WwTW Storm Overflow	Western Cleddau	7	4h 33m	-
Dwr Cymru Welsh Water	Aberporth No. 1 Storm Overflow	Nant Howni	2	2h 30m	-
Dwr Cymru Welsh Water	Spring Gardens New Quay Storm Overflow	New Quay Bay	5	1h 59m	-
Dwr Cymru Welsh Water	South John Street Storm Overflow	New Quay Bay	7	1h 45m	-
Dwr Cymru Welsh Water	Pentrellyn Storm Overflow	River Ystwyth	1	1h 12m	-
Dwr Cymru Welsh Water	Trefechan Bridge Storm Overflow	River Rheidol	1	0h 45m	-
Dwr Cymru Welsh Water	Clarach WwTW Storm Overflow	River Clarach	1	0h 29m	-
Dwr Cymru Welsh Water	Heol Y Farchnad Road Storm Overflow	Nant Aeron	1	0h 29m	-
Dwr Cymru Welsh Water	Fifth Avenue Storm Overflow	River Rheidol	1	0h 28m	-
Dwr Cymru Welsh Water	Pendard Storm Overflow	New Quay Bay	1	0h 14m	-
Dwr Cymru Welsh Water	Fishguard Harbour PS Overflow	Coastal Waters - Fishguard Harbour	1	0h 8m	-
Dwr Cymru Welsh Water	Lower Tresaith Storm Overflow	Sea	0	0h	-
Dwr Cymru Welsh Water	Min-Y-Ddol Storm Overflow	River Rheidol	0	0h	-
Dwr Cymru Welsh Water	Aberporth No. 2 Storm Overflow	Nant Gilwen	0	0h	-
Dwr Cymru Welsh Water	Swyn Y Leri Storm Overflow	Leri Lower	0	0h	-
Dwr Cymru Welsh Water	Ceibwr Lane Moylegrove Storm Overflow	Ceibwr Brook	0	0h	-
Dwr Cymru Welsh Water	Llanina Point Storm Overflow	Coastal Waters - Llanina Point	0	0h	-

Ceredigion Preseli - 2025 Sewage

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