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You're looking at the totals that we have calculated for sewage in Caerfyrddin so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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 Caerfyrddin in 2026

Sewage55,274 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows144

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Pontamman Pipe Crossing Storm Overflow	River Amman	172	3,167h 21m	-
Dwr Cymru Welsh Water	Laugharne WwTW Storm Overflow	Taf Estuary	171	3,147h 36m	-
Dwr Cymru Welsh Water	Waunfarlais Road Brynmarlais Storm Overflow	Afon Marlais	160	3,047h 10m	-
Dwr Cymru Welsh Water	Pont-ar-gothi & Nantgaredig WwTW Storm Overflow	Afon Cothi	97	2,042h 12m	-
Dwr Cymru Welsh Water	Manordeilo Overflow	River Towy	88	2,032h 44m	-
Dwr Cymru Welsh Water	Carmel WwTW Storm Overflow	Tributary of Afon Marlais	106	2,013h 8m	-
Dwr Cymru Welsh Water	Cwmgwili WwTW Storm Overflow	River Gwili	147	1,975h 15m	-
Dwr Cymru Welsh Water	Rhydfach Storm Overflow	River Teifi	87	1,817h 31m	-
Dwr Cymru Welsh Water	Capel Silo Storm Overflow	Unnamed Stream	73	1,564h 28m	-
Dwr Cymru Welsh Water	Llanddarog WwTW Storm Overflow	Gwendraeth Fach	78	1,550h	-
Dwr Cymru Welsh Water	St. Clears Storm Overflow	Afon Cynin	133	1,435h 38m	-
Dwr Cymru Welsh Water	Pentrecwrt WwTW Storm Overflow	River Teifi	121	1,421h 27m	-
Dwr Cymru Welsh Water	Llandovery WwTW Storm Overflow	Afon Bran	85	1,401h 32m	-
Dwr Cymru Welsh Water	Penygroes Storm Overflow	Afon Lash	112	1,400h 48m	-
Dwr Cymru Welsh Water	Brechfa Overflow	Afon Marlais	93	1,333h 59m	-
Dwr Cymru Welsh Water	Ffairfach WwTW Storm Overflow	River Towy	94	1,266h 12m	-
Dwr Cymru Welsh Water	Bishop Road Ammanford Storm Overflow	River Loughor	94	1,254h 30m	-
Dwr Cymru Welsh Water	Upper Station Road Glanaman Storm Overflow	River Amman	102	1,237h 11m	-
Dwr Cymru Welsh Water	Bancyfelin WwTW Storm Overflow	Afon Cywyn	69	1,112h	-
Dwr Cymru Welsh Water	Llanfynydd WwTW Storm Overflow	Afon Sannen	117	1,088h 22m	-
Dwr Cymru Welsh Water	Llangadog WwTW Storm Overflow	River Sawdde	72	972h 7m	-
Dwr Cymru Welsh Water	Whitland WwTW Storm Overflow	River Taff	63	961h 42m	-
Dwr Cymru Welsh Water	Pencader WwTW Storm Overflow	Afon Tyweli	55	861h 57m	-
Dwr Cymru Welsh Water	Cenarth South of Afon Storm Overflow	River Teifi	62	860h	-
Dwr Cymru Welsh Water	Cynwyl Elfed WwTW Storm Overflow	Afon Duad	40	858h 30m	-
Dwr Cymru Welsh Water	Cilycwm WwTW Storm Overflow	River Gwenlais	144	830h 1m	-
Dwr Cymru Welsh Water	Cwmduad WwTW Storm Overflow	Afon Duad	41	767h 17m	-
Dwr Cymru Welsh Water	Brynmarlais Crossing Storm Overflow	Afon Marlais	59	655h 24m	-
Dwr Cymru Welsh Water	Llangain Storm Overflow	Tributary of Afon Tywi	43	633h	-
Dwr Cymru Welsh Water	Llanybydder Cattle Market Storm Overflow	River Teifi	57	629h 46m	-
Dwr Cymru Welsh Water	Bronwydd WwTW Storm Overflow	River Gwili	97	605h 11m	-
Dwr Cymru Welsh Water	Llanybydder Storm Overflow	River Teifi	55	564h 11m	-
Dwr Cymru Welsh Water	Salem WwTW Storm Overflow	Afon Myddyfi	55	537h 47m	-
Dwr Cymru Welsh Water	Heol Y Deri Storm Overflow	River Gwili	66	489h 58m	-
Dwr Cymru Welsh Water	Ashfield Llangadog Storm Overflow	River Towy	31	485h 21m	-
Dwr Cymru Welsh Water	Capel Iwan WwTW Storm Overflow	Afon Mamog	24	401h	-
Dwr Cymru Welsh Water	Porthyrhyd Storm Overflow	Nant Rhydian Ddu	41	400h 38m	-
Dwr Cymru Welsh Water	Drefach WwTW Storm Overflow	Nant Bargod	27	386h 30m	-
Dwr Cymru Welsh Water	Craigwen New Storm Overflow	River Taff	39	361h 45m	-
Dwr Cymru Welsh Water	Newcastle Emlyn Arms Storm Overflow	River Teifi	62	311h 40m	-
Dwr Cymru Welsh Water	Red Roses WwTW Overflow	Tributary of Trelissey Stream	30	289h 25m	-
Dwr Cymru Welsh Water	Heol Llangynnwr Carmarthen Overflow	River Towy	38	279h 25m	-
Dwr Cymru Welsh Water	South of Roundabout A40 A485 Storm Overflow	River Gwili	61	264h 56m	-
Dwr Cymru Welsh Water	Peniel Overflow	Nant Crychiau	15	232h 9m	-
Dwr Cymru Welsh Water	Felingwm Uchaf WwTW Storm Overflow	Cloidach	43	215h 30m	-
Dwr Cymru Welsh Water	Golden Grove WwTW Storm Overflow	Tributary of Afon Tywi	53	214h 51m	-
Dwr Cymru Welsh Water	Pantyffynnon Station Storm Overflow	River Loughor	45	200h 15m	-
Dwr Cymru Welsh Water	Brynmeillion Storm Overflow	Tributary of the Nant Corrwg	42	194h 42m	-
Dwr Cymru Welsh Water	Park Street Ammanford Storm Overflow	River Amman	47	193h 58m	-
Dwr Cymru Welsh Water	Clos Pentre St Clears Overflow	Afon Cynin	56	191h 52m	-
Dwr Cymru Welsh Water	Whitland Storm Overflow	River Taff	37	189h 45m	-
Dwr Cymru Welsh Water	Dyffryn Road Ammanford Storm Overflow	Nant-Y-Ci	51	184h 41m	-
Dwr Cymru Welsh Water	Heol Bethlehem Llandeilo Storm Overflow	River Cennen	48	176h 24m	-
Dwr Cymru Welsh Water	Caio WwTW Overflow	Annell	15	170h 13m	-
Dwr Cymru Welsh Water	Quarry Place Storm Overflow	River Amman	41	164h 46m	-
Dwr Cymru Welsh Water	Llanddarog Overflow	Tributary of Afon Y Bantwen	66	164h 6m	-
Dwr Cymru Welsh Water	Talley WwTW Overflow	Afon Ddu	13	152h 17m	-
Dwr Cymru Welsh Water	Penpound Lane Storm Overflow	River Amman	18	149h 42m	-
Dwr Cymru Welsh Water	Morfa Lane Carmarthen Storm Overflow	River Towy	46	144h 22m	-
Dwr Cymru Welsh Water	Llansadwrn Storm Overflow	Unnamed Tributary of Afon Tywi	16	141h 15m	-
Dwr Cymru Welsh Water	Old Station Road Storm Overflow	River Towy	49	139h 52m	-
Dwr Cymru Welsh Water	Tanerdy Storm Overflow	River Towy	45	137h 58m	-
Dwr Cymru Welsh Water	Pothouse Wharf Storm Overflow	River Towy	9	135h 14m	-
Dwr Cymru Welsh Water	High Street Ammanford Storm Overflow	River Amman	35	135h	-
Dwr Cymru Welsh Water	Cwmann Storm Overflow	River Teifi	65	127h 49m	-
Dwr Cymru Welsh Water	Pendine WwTW Storm Overflow	Soakaway in W, Marsh	9	121h 42m	-
Dwr Cymru Welsh Water	Myddfai Storm Overflow	Tributary of Afon Bran	80	115h 11m	-
Dwr Cymru Welsh Water	Caerbryn Road Penygroes Storm Overflow	Nant Y Wrach	35	112h 9m	-
Dwr Cymru Welsh Water	Aberlash Road Storm Overflow	Afon Marlais	11	110h 25m	-
Dwr Cymru Welsh Water	Cwrt Henri WwTW Storm Overflow	Afon Dulas	29	105h 9m	-
Dwr Cymru Welsh Water	Pen Y Banc Road Ammanford Storm Overflow	River Loughor	30	97h 7m	-
Dwr Cymru Welsh Water	Meidrim WwTW Overflow	Afon Dewi Fawr	42	95h 38m	-
Dwr Cymru Welsh Water	The Grist Storm Overflow	River Coran	31	95h 22m	-
Dwr Cymru Welsh Water	Saron Storm Overflow	Nant Wthan	7	90h 29m	-
Dwr Cymru Welsh Water	Whitland Bridge Storm Overflow	Afon Gronw	21	90h 7m	-
Dwr Cymru Welsh Water	Rhosmaen Storm Overflow	Nant Harri	12	90h 5m	-
Dwr Cymru Welsh Water	New Road Cwmllynfell Storm Overflow	Nant Llynfell	34	83h 14m	-
Dwr Cymru Welsh Water	Wogan Street Laugharne Storm Overflow	Culverted Section of Mackerel Lake Stream	28	77h 39m	-
Dwr Cymru Welsh Water	Station Road Glanaman Storm Overflow	River Amman	18	75h 15m	-
Dwr Cymru Welsh Water	Old Llansteffan Road Carmarthen Storm Overflow	Towy	19	74h 48m	-
Dwr Cymru Welsh Water	Cwm-twrch Uchaf Car Park Storm Overflow	Afon Twrch	13	74h 33m	-
Dwr Cymru Welsh Water	Pont Cynwyl Storm Overflow	Nant Gochen	12	69h 42m	-
Dwr Cymru Welsh Water	Llysnewydd Storm Overflow	River Taff Bargoed	13	65h 43m	-
Dwr Cymru Welsh Water	Llandeilo Near A483 Road Bridge Storm Overflow	River Tywi	34	65h 8m	-
Dwr Cymru Welsh Water	Meadow's Road Storm Overflow	Unnamed Tributary of Afon Gwili	15	59h 50m	-
Dwr Cymru Welsh Water	Old Priory Road Storm Overflow	River Towy	36	57h 24m	-
Dwr Cymru Welsh Water	Alltwallis Overflow	Nant Alltwalis	20	56h 39m	-
Dwr Cymru Welsh Water	Pencader Storm Overflow	Afon Tyweli	16	55h 15m	-
Dwr Cymru Welsh Water	Llandeilo Yscubor Abad North Storm Overflow	River Towy	26	53h 48m	-
Dwr Cymru Welsh Water	Southwest of Margaret Road Storm Overflow	Afon Marlas	9	52h 40m	-
Dwr Cymru Welsh Water	Clos Y Cwm Storm Overflow	River Loughor	19	50h 28m	-
Dwr Cymru Welsh Water	Job's Well Road Storm Overflow	Tawelan Brook	31	42h 10m	-
Dwr Cymru Welsh Water	Llanpumpsaint WwTW Storm Overflow	River Gwili	16	42h 1m	-
Dwr Cymru Welsh Water	Heol Marlais Llandybie Storm Overflow	Afon Marlas	11	41h 55m	-
Dwr Cymru Welsh Water	Llanddowror Village Storm Overflow	Nant Hedfron	9	41h 45m	-
Dwr Cymru Welsh Water	Parc Golwg Yr Aman Storm Overflow	River Amman	6	41h	-
Dwr Cymru Welsh Water	Trelech WwTW Storm Overflow	Afon Cawnen	15	39h 45m	-
Dwr Cymru Welsh Water	Maesquarre Road Storm Overflow	River Amman	7	32h 12m	-
Dwr Cymru Welsh Water	Cynghordy Storm Overflow	Afon Bran	8	30h 12m	-
Dwr Cymru Welsh Water	Heol Llanbedr Llanybydder Storm Overflow	Afon Duar	11	28h 42m	-
Dwr Cymru Welsh Water	Llanboidy WwTW Storm Overflow	Afon Gronw	8	28h 8m	-
Dwr Cymru Welsh Water	Pontargothi Overflow	River Cothi	8	27h 29m	-
Dwr Cymru Welsh Water	Lon Hafren St Clears Overflow	Dewi Fawr	11	26h 10m	-
Dwr Cymru Welsh Water	Llandovery Storm Overflow	Afon Brân	27	25h 40m	-
Dwr Cymru Welsh Water	Albion Near Railway Crossing Storm Overflow	Afon Brake	32	24h 25m	-
Dwr Cymru Welsh Water	Felinfach Road Ystradowen Storm Overflow	Afon Twrch	2	22h 52m	-
Dwr Cymru Welsh Water	Cwmamman Road Storm Overflow	Nant Grenig	10	21h 9m	-
Dwr Cymru Welsh Water	Station Road Brynamman Storm Overflow	River Amman	12	20h 31m	-
Dwr Cymru Welsh Water	Saron Road Saron Storm Overflow	Nant-Y-Ci	8	18h 9m	-
Dwr Cymru Welsh Water	Llansteffan WwTW Overflow	River Towy	11	15h 44m	-
Dwr Cymru Welsh Water	Cwmann Overflow	Tributary of Afon Teifi	5	14h 17m	-
Dwr Cymru Welsh Water	Lon Tanerdy Storm Overflow	River Teifi	9	12h 58m	-
Dwr Cymru Welsh Water	Carmarthen Bridge Storm Overflow	River Towy	16	12h 37m	-
Dwr Cymru Welsh Water	Cwmgarw Road Footbridge Brynamman Storm Overflow	River Amman	9	12h 19m	-
Dwr Cymru Welsh Water	Pencader Bridge Storm Overflow	River Talog	9	10h 42m	-
Dwr Cymru Welsh Water	Carmarthen Sticle Footpath Storm Overflow	Tributary of Afon Tawe	7	10h 19m	-
Dwr Cymru Welsh Water	Caerbryn Woods Storm Overflow	unnamed tributary of Afon Lash	3	9h 56m	-
Dwr Cymru Welsh Water	Fair Trade Way Storm Overflow	River Amman	12	9h 42m	-
Dwr Cymru Welsh Water	Pentremeurig Road 1 Storm Overflow	Tawelan Brook	6	6h 27m	-
Dwr Cymru Welsh Water	Llandeilo of Station Road Storm Overflow	Nant Gurrey Fach	8	6h 26m	-
Dwr Cymru Welsh Water	Park Mill Road Ammanford Storm Overflow	River Loughor	3	4h 59m	-
Dwr Cymru Welsh Water	Abergorlech Storm Overflow	Afon Gorlech	1	4h 45m	-
Dwr Cymru Welsh Water	Gate Road Storm Overflow	Tributary of Afon Lash	2	4h 15m	-
Dwr Cymru Welsh Water	Llanddarog Storm Overflow	Gwendraeth Fach	3	3h 14m	-
Dwr Cymru Welsh Water	Amman Road Storm Overflow	River Amman	3	3h 10m	-
Dwr Cymru Welsh Water	Pensarn Overflow	Unnamed Watercourse	4	2h 59m	-
Dwr Cymru Welsh Water	Russell Terrace Storm Overflow	Tawelan	3	1h 14m	-
Dwr Cymru Welsh Water	Hall Street Brynamman Storm Overflow	Unnamed Tributary of Afon Amman	2	1h 3m	-
Dwr Cymru Welsh Water	Cwm Ifor WwTW Storm Overflow	River Towy	1	1h	-
Dwr Cymru Welsh Water	Cwmdwyfran Storm Overflow	River Gwili	2	1h	-
Dwr Cymru Welsh Water	Llangynog WwTW Storm Overflow	Tributary of Afon Taf	2	0h 44m	-
Dwr Cymru Welsh Water	Felinfran Overflow	The Afon Bran	1	0h 14m	-
Dwr Cymru Welsh Water	Ffarmers WwTW Overflow	Afon Twrch	0	0h	-
Dwr Cymru Welsh Water	Llangain Pwntan Storm Overflow	Nant Pwntan	0	0h	-
Dwr Cymru Welsh Water	Caer Bryn Road Pen Y Groes Overflow	The Lash	0	0h	-
Dwr Cymru Welsh Water	Pentremeurig Road 2 Storm Overflow	Tawelan Brook	0	0h	-
Dwr Cymru Welsh Water	Capel Hendre Hendre Road Storm Overflow	Nant Arw	0	0h	-
Dwr Cymru Welsh Water	No1 Llansawel Village Storm Overflow	Afon Melindwr	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Llansawel No. 2 Storm Overflow	Afon Melindwr	0	0h	-
Dwr Cymru Welsh Water	Llangadog Off A4069 Storm Overflow	Unnamed Tributary of Afon Sawdde	0	0h	-
Dwr Cymru Welsh Water	Heol Salem Storm Overflow	Tawelan Brook	0	0h	-
Dwr Cymru Welsh Water	Parc Hinds Storm Overflow	River Tywi	0	0h	-
Dwr Cymru Welsh Water	Brickyard Lane Storm Overflow	River Towy	0	0h	-

Caerfyrddin - Live Sewage

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