Top of the Poops | Constituency Sewage Map | Llanelli | Polluted by Dwr Cymru Welsh Water

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Live data for Llanelli in 2026

So far this year (as of 25 Oct 2026, 19:30) there has been 13,611 hours of sewage overflows, from 94 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 1.58 years!

Totals for Llanelli in 2025

77 Sites polluted by Dwr Cymru Welsh Water

3,825 sewage dumps

33,261 hours duration

Sewage pollution map of Llanelli: 3,825 spills in 2025, lasting 33,261 hours, by Dwr Cymru Welsh Water

That's 3.85 years. On average 10.5 times a day

Change Over Time

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Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Marlias	LLANNON STW LLANNON LLANELLI	150	2,825	99.9
Dwr Cymru Welsh Water	River Gwendraeth Fach	LLANDDAROG WWTW LLANDDAROG CARMARTH	139	2,803	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	PONTYBEREM WWTW PONTYBEREM CARMS	154	2,659	99.9
Dwr Cymru Welsh Water	River Gwili	CROSSHANDS WWTW	205	2,242	94.75
Dwr Cymru Welsh Water	Loughor Est'Y	PEMBREY WASTEWATER TREATMENT WORKS	121	2,111	99.8
Dwr Cymru Welsh Water	Gwendraeth Fawr	TRIMSARAN WWTW SPUDDER BRIDGE RD	100	1,756	99.9
Dwr Cymru Welsh Water	Llansaint Stream	LLANSAINT WWTW LLANSAINT FERRYSIDE	111	1,734	99.8
Dwr Cymru Welsh Water	Gwendraeth Fawr	CARWAY WWTW CARWAY CARMS	155	1,579	99.9
Dwr Cymru Welsh Water	River Dulias	MYNNYDD CERRIG PUMPING STATION	106	1,318	99.8
Dwr Cymru Welsh Water	River Gwili	LLANEDI WWTW	208	1,237	99.9
Dwr Cymru Welsh Water	River Gwili	CWMTAWEL WWTW OFF A48 S CROSS HANDS	103	1,222	99.9
Dwr Cymru Welsh Water	Nant Cwm Croes Y Ceiliog	IDOLE CWMFFRWD SEWERAGE SCHEME	71	867	99.9
Dwr Cymru Welsh Water	River Loughor	Combined Sewer Overflow 15	121	819	98.6
Dwr Cymru Welsh Water	Gwendraeth Fawr	SOC4 PONTYATES AREA CSO	63	684	82.6
Dwr Cymru Welsh Water	Gwendraeth Fawr	BLAENHIRWAUN CSO CEFNEITHIN	76	584	84.2
Dwr Cymru Welsh Water	Nant Y Gro	CSO at Trimsaran WWTW Spudder Bridge Road	128	583	99.8
Dwr Cymru Welsh Water	Barnaby Pil	CSO Behind 8 Pwll Road, Pwll	31	480	99.7
Dwr Cymru Welsh Water	River Loughor	PEN Y BANC CSO 40 ON HENDRE SEWER	73	409	98.7
Dwr Cymru Welsh Water	Ferryside Stream	FERRYSIDE PS . .	54	404	99.9
Dwr Cymru Welsh Water	Loughor Estuary	LLANELLI WWTW BERWICK ROAD BYNEA	49	368	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Trimsaran Waste Water Treatement Works Settled Storm	33	368	99.5
Dwr Cymru Welsh Water	Unnamed Canal To Tywi Estuary	SWO. BURRY PORT AREA - INTO O	74	358	98.3
Dwr Cymru Welsh Water	Gwendraeth Fawr	Clos Isaf CSO, Drefach	83	356	99.9
Dwr Cymru Welsh Water	River Dafen	St Michael’s Church CSO	32	343	99.6
Dwr Cymru Welsh Water	River Dafen	East of Kingfisher Court CSO	36	326	99.8
Dwr Cymru Welsh Water	Nant Mwrwg	CSO at Rear of Trio Engineer'g Llangennech	71	324	99.9
Dwr Cymru Welsh Water	River Loughor	Ynys Tomenlle CSO Iscoed R'd Hendy	78	322	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Parc Y Dai No1 CSO Drefach	98	312	97.1
Dwr Cymru Welsh Water	Gwendraeth Fawr	New Lodge Inn CSO Pontyberem Carm	51	289	99.1
Dwr Cymru Welsh Water	Gwendraeth Fawr	CSO at Cwm Mawr Rb No1 Gwendreath Catchmen	42	258	99.9
Dwr Cymru Welsh Water	Of Gwendraeth Fach	TYCOCH SEWAGE PUMPING STATION KIDW	55	248	99.9
Dwr Cymru Welsh Water	Nant Dyfatty	CWM CAPEL PS BURRY PORT	17	226	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Tom Jones Nursery CSO	57	222	99.9
Dwr Cymru Welsh Water	Gwendraeth Fach	GARREG SPS LLANGADOG KIDWELLY	33	222	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Pontyberem No2 SPS	68	202	99.9
Dwr Cymru Welsh Water	River Dulais	SANDY SPS (A484 o/s gate to Sandy PS)	53	173	99.9
Dwr Cymru Welsh Water	River Dafen	CSO at Heol Cropin SPS	17	166	99.9
Dwr Cymru Welsh Water	River Loughor Estuary	PWLL SEWAGE PUMPING STATION CARMS	15	160	96.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	HEOL MEINCIAU CSO	24	159	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Parc y Dai CSO	50	144	97.7
Dwr Cymru Welsh Water	Swan Pool Drain	LINKS PEMBREY PS EMERG , ,	31	144	99.9
Dwr Cymru Welsh Water	Nant Mwrwg Tidal	SSO LLANGENNECH PS CARMS	73	129	99.9
Dwr Cymru Welsh Water	River Morlais	CSO at 250 M DOWN STREAM OF GLAN-YR-AFON	31	98	99.9
Dwr Cymru Welsh Water	Nant Dyfaty	Heol Ddu SPS	16	94	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	PONT HENRI INCLINE INN CSO	18	94	99.8
Dwr Cymru Welsh Water	River Loughor Estuary	SSO. NORTHUMBERLAND OUTFALL	29	90	99.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	27 RHOSNEWYDD MAESYGWERN CSO TUMBLE	52	84	96.1
Dwr Cymru Welsh Water	River Dulais	YARD BRIDGE CSO SANDY RD PWLL LLAN	20	80	99.6
Dwr Cymru Welsh Water	Tidal Pill Of Loughor Estuary	Bynea Sewage pumping Station	15	72	99.9
Dwr Cymru Welsh Water	Pîl Dafen	CSO 49 Tir Einon, Llwynhendy	24	57	96.9
Dwr Cymru Welsh Water	Gwendraeth Fawr	Ddoll Las Temporary CSO Llanelli	15	54	99.9
Dwr Cymru Welsh Water	River Lliedi	Llanelli - Head Post Office CSO	27	39	81.5
Dwr Cymru Welsh Water	An Barnaby Pil	Burry Port Sewage Pumping Station	17	38	99.1
Dwr Cymru Welsh Water	Gwendraeth Fach Estuary	SSO AT STATION ROAD P.S. KIDWELLY	35	37	76
Dwr Cymru Welsh Water	Gwendraeth Fach Estuary	SSO AT STATION ROAD P.S. KIDWELLY	35	37	76
Dwr Cymru Welsh Water	Burry Port Harbour Via Drain	Ahshburnham SPS CSO	7	37	98.2
Dwr Cymru Welsh Water	River Gwili	CSO At Hendy On Left Bank Of River	52	35	93.8
Dwr Cymru Welsh Water	River Gwili	Bryngwili Rd CSO, Hendy	19	26	99.5
Dwr Cymru Welsh Water	Nant Glas	Waungoch SPS CSO	4	26	99.9
Dwr Cymru Welsh Water	River Lliedi	CSO BELOW ANDREW STREET BRIDGE LLAN	6	20	80
Dwr Cymru Welsh Water	Loughor Outer	Cambrian Street P.S. SSO	13	18	99.9
Dwr Cymru Welsh Water	Unnamed Utuary Of Gwendreath Fach	CSO at Llangynderyn PS into R Gwendraeth Fach	4	12	99.9
Dwr Cymru Welsh Water	River Dafen	Havard Road CSO	17	11	99.2
Dwr Cymru Welsh Water	Gwendraeth Fawr	CSO at Access Road To Pontyberem STW	7	9	99.9
Dwr Cymru Welsh Water	Disused Canal	Ashburnham Road CSO	9	8	92.4
Dwr Cymru Welsh Water	Of River Dafen	LLWYNUHILWG PS EMERG , ,	2	6	99.8
Dwr Cymru Welsh Water	River Lliedi	SWO.BELOW PENYFAN QUARRY(S158) LLAN	14	6	99.5
Dwr Cymru Welsh Water	Gwendraeth Fach	LLANGYNDERYN WWTW KIDWELLY CARMS	2	4	99.8
Dwr Cymru Welsh Water	Nant Dyfatty	CHURCH ROAD CSO BURRY PORT LLANELLI	10	3	99.9
Dwr Cymru Welsh Water	Barnaby Pil	Bryn Avenue CSO	4	1	99.7
Dwr Cymru Welsh Water	River Dafen	HALFWAY PS DAFEN LLANELLI CARMS	4	1	99.8
Dwr Cymru Welsh Water	River Lliedi	HEOL GOFFA ROAD CSO LLANELLI CARMS	1	1	100
Dwr Cymru Welsh Water	Gwendraeth Fawr	HEOL NAZARETH 2 CSO	2	0	99.8
Dwr Cymru Welsh Water	River Dafen	Halfway Area CSO, Y Llwyn, Coedcae	2	0	100
Dwr Cymru Welsh Water	River Dafen Via Surface Water Culvert	Pencae Terrace CSO	1	0	96.1
Dwr Cymru Welsh Water	Unnamed Stream To Outer Harbou	SHORELINE PS BURRY PORT	1	0	96.9
Dwr Cymru Welsh Water	Surf W System To River Dafen	ST GEORGE COTTAGES CSO COEDCAE	1	0	100
Dwr Cymru Welsh Water	River Lliedi	BUCKLEYS CELLAR CSO LLANELLI	0	0	96.9
Dwr Cymru Welsh Water	River Lliedi	CSO at 52 Maestir, Llanelli	0	0	85.9
Dwr Cymru Welsh Water	Drain Leading To River Loughor	DYFATTY PARK SPS, BURRY PORT	0	0	99.9
Dwr Cymru Welsh Water	Ferryside Stream	FERRYSIDE STW FERRYSIDE CARMS	0	0	99.8
Dwr Cymru Welsh Water	Un	HEOL HEN CSO LLWYNHENDY LLANELLI	0	0	91.1
Dwr Cymru Welsh Water	River Morlais	HEOL WAUN Y CLUN CSO TRIMSARAN	0	0	99.8
Dwr Cymru Welsh Water	River Gwili	Hendy SPS	0	0	99.9
Dwr Cymru Welsh Water	Tidal Nant Mwrwg	LLANGENNECH P.STN.SSO LLANELLI	0	0	100
Dwr Cymru Welsh Water	River Lliedi	Llanelli - O/S Thomas Brothers CSO	0	0	100
Dwr Cymru Welsh Water	Gwendraeth Fach	Settled Storm Overflow at Llangyndeyrn Wastewater Treatment Works	0	0	100

Llanelli

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Live data for Llanelli in 2026

Totals for Llanelli in 2025

77 Sites polluted by Dwr Cymru Welsh Water

Change Over Time

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