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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.

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Waunfarlais Road Brynmarlais Storm Overflow	Afon Marlais	68	1,543 h 15m	-
Dwr Cymru Welsh Water	Pont-ar-gothi & Nantgaredig WwTW Storm Overflow	Afon Cothi	68	1,520 h 30m	-
Dwr Cymru Welsh Water	Manordeilo Overflow	River Towy	61	1,424 h	-
Dwr Cymru Welsh Water	Pontamman Pipe Crossing Storm Overflow	River Amman	64	1,416 h 15m	-
Dwr Cymru Welsh Water	Rhydfach Storm Overflow	River Teifi	59	1,352 h	-
Dwr Cymru Welsh Water	Laugharne WwTW Storm Overflow	Taf Estuary	67	1,287 h 56m	-
Dwr Cymru Welsh Water	Llanddarog WwTW Storm Overflow	Gwendraeth Fach	59	1,188 h 15m	-
Dwr Cymru Welsh Water	St. Clears Storm Overflow	Afon Cynin	61	1,089 h 45m	-
Dwr Cymru Welsh Water	Pentrecwrt WwTW Storm Overflow	River Teifi	66	1,076 h 55m	-
Dwr Cymru Welsh Water	Llandovery WwTW Storm Overflow	Afon Bran	54	1,037 h 30m	-
Dwr Cymru Welsh Water	Ffairfach WwTW Storm Overflow	River Towy	57	1,001 h 30m	-
Dwr Cymru Welsh Water	Bancyfelin WwTW Storm Overflow	Afon Cywyn	50	928 h 30m	-
Dwr Cymru Welsh Water	Cynwyl Elfed WwTW Storm Overflow	Afon Duad	40	858 h 30m	-
Dwr Cymru Welsh Water	Bishop Road Ammanford Storm Overflow	River Loughor	53	849 h 38m	-
Dwr Cymru Welsh Water	Brechfa Overflow	Afon Marlais	48	836 h 9m	-
Dwr Cymru Welsh Water	Capel Silo Storm Overflow	Unnamed Stream	36	805 h 45m	-
Dwr Cymru Welsh Water	Whitland WwTW Storm Overflow	River Taff	45	784 h 45m	-
Dwr Cymru Welsh Water	Pencader WwTW Storm Overflow	Afon Tyweli	42	703 h 59m	-
Dwr Cymru Welsh Water	Llangadog WwTW Storm Overflow	River Sawdde	36	703 h 15m	-
Dwr Cymru Welsh Water	Cenarth South of Afon Storm Overflow	River Teifi	51	685 h	-
Dwr Cymru Welsh Water	Carmel WwTW Storm Overflow	Tributary of Afon Marlais	29	663 h	-
Dwr Cymru Welsh Water	Llangain Storm Overflow	Tributary of Afon Tywi	36	617 h 44m	-
Dwr Cymru Welsh Water	Cwmduad WwTW Storm Overflow	Afon Duad	31	577 h 2m	-
Dwr Cymru Welsh Water	Penygroes Storm Overflow	Afon Lash	47	561 h 30m	-
Dwr Cymru Welsh Water	Llanfynydd WwTW Storm Overflow	Afon Sannen	44	557 h 18m	-
Dwr Cymru Welsh Water	Brynmarlais Crossing Storm Overflow	Afon Marlais	45	531 h 13m	-
Dwr Cymru Welsh Water	Cilycwm WwTW Storm Overflow	River Gwenlais	54	500 h 46m	-
Dwr Cymru Welsh Water	Llanybydder Cattle Market Storm Overflow	River Teifi	39	482 h 45m	-
Dwr Cymru Welsh Water	Ashfield Llangadog Storm Overflow	River Towy	28	466 h 21m	-
Dwr Cymru Welsh Water	Llanybydder Storm Overflow	River Teifi	43	462 h	-
Dwr Cymru Welsh Water	Bronwydd WwTW Storm Overflow	River Gwili	50	429 h 6m	-
Dwr Cymru Welsh Water	Cwmgwili WwTW Storm Overflow	River Gwili	43	414 h 57m	-
Dwr Cymru Welsh Water	Capel Iwan WwTW Storm Overflow	Afon Mamog	24	401 h	-
Dwr Cymru Welsh Water	Drefach WwTW Storm Overflow	Nant Bargod	23	353 h 45m	-
Dwr Cymru Welsh Water	Porthyrhyd Storm Overflow	Nant Rhydian Ddu	26	309 h 22m	-
Dwr Cymru Welsh Water	Craigwen New Storm Overflow	River Taff	26	284 h 30m	-
Dwr Cymru Welsh Water	Heol Llangynnwr Carmarthen Overflow	River Towy	28	247 h 22m	-
Dwr Cymru Welsh Water	South of Roundabout A40 A485 Storm Overflow	River Gwili	50	246 h 8m	-
Dwr Cymru Welsh Water	Upper Station Road Glanaman Storm Overflow	River Amman	32	237 h 15m	-
Dwr Cymru Welsh Water	Salem WwTW Storm Overflow	Afon Myddyfi	25	233 h 30m	-
Dwr Cymru Welsh Water	Newcastle Emlyn Arms Storm Overflow	River Teifi	34	233 h 19m	-
Dwr Cymru Welsh Water	Heol Y Deri Storm Overflow	River Gwili	27	211 h 50m	-
Dwr Cymru Welsh Water	Clos Pentre St Clears Overflow	Afon Cynin	36	145 h 5m	-
Dwr Cymru Welsh Water	Whitland Storm Overflow	River Taff	20	136 h	-
Dwr Cymru Welsh Water	Caio WwTW Overflow	Annell	9	124 h 15m	-
Dwr Cymru Welsh Water	Pendine WwTW Storm Overflow	Soakaway in W, Marsh	9	121 h 42m	-
Dwr Cymru Welsh Water	Park Street Ammanford Storm Overflow	River Amman	27	115 h 7m	-
Dwr Cymru Welsh Water	Llanddarog Overflow	Tributary of Afon Y Bantwen	40	108 h 30m	-
Dwr Cymru Welsh Water	Golden Grove WwTW Storm Overflow	Tributary of Afon Tywi	18	104 h 30m	-
Dwr Cymru Welsh Water	Pantyffynnon Station Storm Overflow	River Loughor	21	99 h 30m	-
Dwr Cymru Welsh Water	Brynmeillion Storm Overflow	Tributary of the Nant Corrwg	26	96 h	-
Dwr Cymru Welsh Water	Myddfai Storm Overflow	Tributary of Afon Bran	60	94 h 15m	-
Dwr Cymru Welsh Water	Tanerdy Storm Overflow	River Towy	26	92 h 47m	-
Dwr Cymru Welsh Water	Saron Storm Overflow	Nant Wthan	7	90 h 29m	-
Dwr Cymru Welsh Water	Heol Bethlehem Llandeilo Storm Overflow	River Cennen	24	89 h 46m	-
Dwr Cymru Welsh Water	Penpound Lane Storm Overflow	River Amman	9	87 h 56m	-
Dwr Cymru Welsh Water	Dyffryn Road Ammanford Storm Overflow	Nant-Y-Ci	19	87 h 45m	-
Dwr Cymru Welsh Water	Cwmann Storm Overflow	River Teifi	35	84 h	-
Dwr Cymru Welsh Water	Morfa Lane Carmarthen Storm Overflow	River Towy	29	75 h	-
Dwr Cymru Welsh Water	Quarry Place Storm Overflow	River Amman	18	73 h 45m	-
Dwr Cymru Welsh Water	The Grist Storm Overflow	River Coran	24	72 h 16m	-
Dwr Cymru Welsh Water	Meidrim WwTW Overflow	Afon Dewi Fawr	29	71 h	-
Dwr Cymru Welsh Water	Station Road Glanaman Storm Overflow	River Amman	15	69 h 15m	-
Dwr Cymru Welsh Water	Llansadwrn Storm Overflow	Unnamed Tributary of Afon Tywi	6	67 h	-
Dwr Cymru Welsh Water	Felingwm Uchaf WwTW Storm Overflow	Cloidach	11	65 h 45m	-
Dwr Cymru Welsh Water	Wogan Street Laugharne Storm Overflow	Culverted Section of Mackerel Lake Stream	24	65 h 29m	-
Dwr Cymru Welsh Water	Old Station Road Storm Overflow	River Towy	21	64 h 15m	-
Dwr Cymru Welsh Water	Whitland Bridge Storm Overflow	Afon Gronw	16	63 h 24m	-
Dwr Cymru Welsh Water	Llysnewydd Storm Overflow	River Taff Bargoed	10	62 h 30m	-
Dwr Cymru Welsh Water	Talley WwTW Overflow	Afon Ddu	5	59 h 14m	-
Dwr Cymru Welsh Water	High Street Ammanford Storm Overflow	River Amman	20	56 h 37m	-
Dwr Cymru Welsh Water	Old Llansteffan Road Carmarthen Storm Overflow	Towy	10	55 h 23m	-
Dwr Cymru Welsh Water	Llandeilo Near A483 Road Bridge Storm Overflow	River Tywi	24	53 h 30m	-
Dwr Cymru Welsh Water	Aberlash Road Storm Overflow	Afon Marlais	5	53 h 12m	-
Dwr Cymru Welsh Water	Caerbryn Road Penygroes Storm Overflow	Nant Y Wrach	16	52 h 15m	-
Dwr Cymru Welsh Water	Pencader Storm Overflow	Afon Tyweli	13	46 h 45m	-
Dwr Cymru Welsh Water	Southwest of Margaret Road Storm Overflow	Afon Marlas	4	43 h 43m	-
Dwr Cymru Welsh Water	Llandeilo Yscubor Abad North Storm Overflow	River Towy	19	42 h 19m	-
Dwr Cymru Welsh Water	Parc Golwg Yr Aman Storm Overflow	River Amman	6	41 h	-
Dwr Cymru Welsh Water	Alltwallis Overflow	Nant Alltwalis	13	40 h 54m	-
Dwr Cymru Welsh Water	New Road Cwmllynfell Storm Overflow	Nant Llynfell	15	36 h 7m	-
Dwr Cymru Welsh Water	Clos Y Cwm Storm Overflow	River Loughor	11	34 h 12m	-
Dwr Cymru Welsh Water	Old Priory Road Storm Overflow	River Towy	17	33 h 45m	-
Dwr Cymru Welsh Water	Pen Y Banc Road Ammanford Storm Overflow	River Loughor	13	33 h 32m	-
Dwr Cymru Welsh Water	Cwrt Henri WwTW Storm Overflow	Afon Dulas	8	31 h 45m	-
Dwr Cymru Welsh Water	Llanddowror Village Storm Overflow	Nant Hedfron	4	31 h 30m	-
Dwr Cymru Welsh Water	Llanpumpsaint WwTW Storm Overflow	River Gwili	13	31 h 15m	-
Dwr Cymru Welsh Water	Trelech WwTW Storm Overflow	Afon Cawnen	11	30 h 30m	-
Dwr Cymru Welsh Water	Heol Llanbedr Llanybydder Storm Overflow	Afon Duar	9	26 h 43m	-
Dwr Cymru Welsh Water	Llanboidy WwTW Storm Overflow	Afon Gronw	7	25 h 39m	-
Dwr Cymru Welsh Water	Job's Well Road Storm Overflow	Tawelan Brook	14	24 h 21m	-
Dwr Cymru Welsh Water	Lon Hafren St Clears Overflow	Dewi Fawr	8	19 h 25m	-
Dwr Cymru Welsh Water	Pontargothi Overflow	River Cothi	6	19 h 15m	-
Dwr Cymru Welsh Water	Albion Near Railway Crossing Storm Overflow	Afon Brake	21	16 h	-
Dwr Cymru Welsh Water	Cwmann Overflow	Tributary of Afon Teifi	4	12 h 17m	-
Dwr Cymru Welsh Water	Carmarthen Bridge Storm Overflow	River Towy	12	10 h 53m	-
Dwr Cymru Welsh Water	Llandovery Storm Overflow	Afon Brân	14	10 h 30m	-
Dwr Cymru Welsh Water	Carmarthen Sticle Footpath Storm Overflow	Tributary of Afon Tawe	5	9 h 34m	-
Dwr Cymru Welsh Water	Station Road Brynamman Storm Overflow	River Amman	6	7 h 18m	-
Dwr Cymru Welsh Water	Pont Cynwyl Storm Overflow	Nant Gochen	2	7 h 2m	-
Dwr Cymru Welsh Water	Saron Road Saron Storm Overflow	Nant-Y-Ci	2	6 h 30m	-
Dwr Cymru Welsh Water	Pencader Bridge Storm Overflow	River Talog	7	6 h 27m	-
Dwr Cymru Welsh Water	Cynghordy Storm Overflow	Afon Bran	2	5 h 45m	-
Dwr Cymru Welsh Water	Llansteffan WwTW Overflow	River Towy	2	4 h 16m	-
Dwr Cymru Welsh Water	Park Mill Road Ammanford Storm Overflow	River Loughor	2	4 h 15m	-
Dwr Cymru Welsh Water	Fair Trade Way Storm Overflow	River Amman	5	3 h 45m	-
Dwr Cymru Welsh Water	Cwmamman Road Storm Overflow	Nant Grenig	4	3 h 36m	-
Dwr Cymru Welsh Water	Llanddarog Storm Overflow	Gwendraeth Fach	2	2 h 45m	-
Dwr Cymru Welsh Water	Cwmgarw Road Footbridge Brynamman Storm Overflow	River Amman	3	2 h 39m	-
Dwr Cymru Welsh Water	Llandeilo of Station Road Storm Overflow	Nant Gurrey Fach	3	2 h 12m	-
Dwr Cymru Welsh Water	Pensarn Overflow	Unnamed Watercourse	2	2 h 4m	-
Dwr Cymru Welsh Water	Lon Tanerdy Storm Overflow	River Teifi	3	1 h 58m	-
Dwr Cymru Welsh Water	Rhosmaen Storm Overflow	Nant Harri	2	1 h 45m	-
Dwr Cymru Welsh Water	Cwm Ifor WwTW Storm Overflow	River Towy	1	1 h	-
Dwr Cymru Welsh Water	Cwmdwyfran Storm Overflow	River Gwili	2	1 h	-
Dwr Cymru Welsh Water	Heol Marlais Llandybie Storm Overflow	Afon Marlas	4	0 h 59m	-
Dwr Cymru Welsh Water	Llangynog WwTW Storm Overflow	Tributary of Afon Taf	1	0 h 15m	-
Dwr Cymru Welsh Water	Gate Road Storm Overflow	Tributary of Afon Lash	1	0 h 15m	-
Dwr Cymru Welsh Water	Maesquarre Road Storm Overflow	River Amman	1	0 h 15m	-
Dwr Cymru Welsh Water	Felinfran Overflow	The Afon Bran	1	0 h 14m	-
Dwr Cymru Welsh Water	Abergorlech Storm Overflow	Afon Gorlech	0	0 h	-
Dwr Cymru Welsh Water	Brickyard Lane Storm Overflow	River Towy	0	0 h	-
Dwr Cymru Welsh Water	Pentremeurig Road 1 Storm Overflow	Tawelan Brook	0	0 h	-
Dwr Cymru Welsh Water	Red Roses WwTW Overflow	Tributary of Trelissey Stream	0	0 h	-
Dwr Cymru Welsh Water	Russell Terrace Storm Overflow	Tawelan	0	0 h	-
Dwr Cymru Welsh Water	Hall Street Brynamman Storm Overflow	Unnamed Tributary of Afon Amman	0	0 h	-
Dwr Cymru Welsh Water	Ffarmers WwTW Overflow	Afon Twrch	0	0 h	-
Dwr Cymru Welsh Water	Llangain Pwntan Storm Overflow	Nant Pwntan	0	0 h	-
Dwr Cymru Welsh Water	Caer Bryn Road Pen Y Groes Overflow	The Lash	0	0 h	-
Dwr Cymru Welsh Water	Llangadog Off A4069 Storm Overflow	Unnamed Tributary of Afon Sawdde	0	0 h	-
Dwr Cymru Welsh Water	Pentremeurig Road 2 Storm Overflow	Tawelan Brook	0	0 h	-
Dwr Cymru Welsh Water	Cwm-twrch Uchaf Car Park Storm Overflow	Afon Twrch	0	0 h	-
Dwr Cymru Welsh Water	Parc Hinds Storm Overflow	River Tywi	0	0 h	-
Dwr Cymru Welsh Water	Capel Hendre Hendre Road Storm Overflow	Nant Arw	0	0 h	-
Dwr Cymru Welsh Water	Caerbryn Woods Storm Overflow	unnamed tributary of Afon Lash	0	0 h	-
Dwr Cymru Welsh Water	Amman Road Storm Overflow	River Amman	0	0 h	-
Dwr Cymru Welsh Water	Peniel Overflow	Nant Crychiau	0	0 h	-
Dwr Cymru Welsh Water	Meadow's Road Storm Overflow	Unnamed Tributary of Afon Gwili	0	0 h	-
Dwr Cymru Welsh Water	No1 Llansawel Village Storm Overflow	Afon Melindwr	0	0 h	-
Dwr Cymru Welsh Water	Pothouse Wharf Storm Overflow	River Towy	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Llansawel No. 2 Storm Overflow	Afon Melindwr	0	0 h	-

It's a Dirty Business

Caerfyrddin - Live Sewage

Polluted by sewage 33,591 hours in 2026 - That's 3.89 years so far..

Caerfyrddin - Live Sewage

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View Annual Sewage Data

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It's a Dirty Business

Caerfyrddin - Live Sewage Polluted by sewage 33,591 hours in 2026 - That's 3.89 years so far..

Caerfyrddin - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Caerfyrddin

Daily Data

We need your support!

Totals so far

Data Sources & Accuracy

Media Queries

Please Support Us

Caerfyrddin - Live Sewage

Polluted by sewage 33,591 hours in 2026 - That's 3.89 years so far..