Mid and South Pembrokeshire was polluted by sewage 6,121 times in 2024
lasting 58,148 hours - that's 6.73 years!

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Totals for Mid and South Pembrokeshire in 2024

109 Sites polluted by Dwr Cymru Welsh Water

6,121 sewage dumps
58,148 h duration

That's 6.73 years! On average 16.8 times a day

Change Over Time

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Constituencies near Mid and South Pembrokeshire

Waterways in Mid and South Pembrokeshire

Pollution Summary 2024

Here are all the reported sewage overflow totals for Mid and South Pembrokeshire in 2024. 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 0 of the total 117 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Western Cleddau	Pont-Yr-Hafod Sewage Pumping Station	176	3,659	89.3
Dwr Cymru Welsh Water	River Cresswell	Langdon STW Settled Storm	170	3,390	99.9
Dwr Cymru Welsh Water	Radford Pill	CAREW/MILTON WWTWS PEMBROKESHIRE	231	3,125	97.5
Dwr Cymru Welsh Water	West Cleddua	CSO@WOLFSDALE SPS	153	2,950	99.7
Dwr Cymru Welsh Water	Cosheston Pill	COSHESTON STW . .	206	2,430	99.9
Dwr Cymru Welsh Water	Milford Haven	ANGLE VILLAGE PS	141	2,307	78.8
Dwr Cymru Welsh Water	Hazelbeach Stream	Waterston WwTW Inlet CSO	318	2,254	99.9
Dwr Cymru Welsh Water	River Anghof	Letterston East STW SPS	118	2,183	99.7
Dwr Cymru Welsh Water	Angle Bay	Angle WWTW Pembroke Pembrokeshire Setteld Storm	146	2,094	100
Dwr Cymru Welsh Water	Cartlet Brook	CLARBESTON STW HAVERFORDWEST PEMBS	105	1,661	99.2
Dwr Cymru Welsh Water	Western Cleddau	Letterston West WwTW CSO	160	1,618	100
Dwr Cymru Welsh Water	Coastal Waters At Saundersfoot	SAUNDERSFOOT STW/PS SAUNDERSFOOT	98	1,591	99.8
Dwr Cymru Welsh Water	Deepford Brook	Clarbeston Road PS	95	1,582	99
Dwr Cymru Welsh Water	Carew River	Carew WwTW Carew Pembrokeshire Settled Storm	59	1,391	100
Dwr Cymru Welsh Water	Est'L Waters Milford Haven	DALE WWTW - CSO	126	1,322	99.8
Dwr Cymru Welsh Water	Monk Haven Stream	SPS at St Ishmaels WwTW	77	1,243	100
Dwr Cymru Welsh Water	Coastal Waters At Porth Clais	ST DAVID'S WWTW ST DAVID'S PEMBS	68	1,083	100
Dwr Cymru Welsh Water	Ford'S Lake	TEMPLETON STW STORM	105	1,052	99.2
Dwr Cymru Welsh Water	Knock Brook	Keeston Works Inlet CSO	87	992	100
Dwr Cymru Welsh Water	Tidal River Solva	SOLVA P.S. . .	58	944	99.9
Dwr Cymru Welsh Water	River Cresswell	LANGDON WWTW BEGELLY PEMBROKESHIRE	41	807	98.6
Dwr Cymru Welsh Water	Rubaxton Water	SPITTAL WWTW SPITTAL PEMBS	98	805	99.9
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	Merlins Bridge STW/Inlet SPS	100	797	99.8
Dwr Cymru Welsh Water	Winterton Mars	MARLOES STW	109	777	100
Dwr Cymru Welsh Water	Winterton Marsh Stream	MARLOES WORKS INLET . .	103	768	99.9
Dwr Cymru Welsh Water	Cosheston Pill	COSHESTON STW	49	733	100
Dwr Cymru Welsh Water	Brandy Brook	NEWGALE SEWAGE TREATMENT WORKS	57	726	99.9
Dwr Cymru Welsh Water	River Ritec	STORM TANKS AT TENBY HEADWORKS TE	64	642	99.8
Dwr Cymru Welsh Water	Pembroke River	HUNDLETON WWTW INLET STORM OVERFLOW	116	632	99.9
Dwr Cymru Welsh Water	Cartlett Brook	Clarbeston Wastewater Treatment Works	93	560	99.7
Dwr Cymru Welsh Water	Knock Brook	Keeston Wastewater Treatment Works	58	536	100
Dwr Cymru Welsh Water	Castle Pond	St Nicholas Crescent CSO, Pembroke	40	501	84
Dwr Cymru Welsh Water	Estuary East Of Sandy Haven	HERBRANDSTON WWTW HERBRANDSTON	30	483	99.9
Dwr Cymru Welsh Water	Cartlett Brook	Crundale Sewage Pumping Station	41	449	68.2
Dwr Cymru Welsh Water	Nolton Bay	CSO SERVING NOLTON HAVEN SPS	36	433	99.8
Dwr Cymru Welsh Water	Deadman'S Lake Stream	STEYNTON SPS	30	433	99.8
Dwr Cymru Welsh Water	River Anghof	WOLFSCASTLE PS	50	418	99.3
Dwr Cymru Welsh Water	Bosherton Lake	STACKPOLE STW (EMERGENCY) STACKPOLE	66	416	99.9
Dwr Cymru Welsh Water	Coastal Wtrs Nr Stackpole Quay	STACKPOLE STW STACKPOLE	66	416	99.9
Dwr Cymru Welsh Water	Narberth Brook	NARBERTH WEST STW	67	409	99.5
Dwr Cymru Welsh Water	Beggars Reach Daugleddau	LLANGWM WWTW LLANGWM PEMBROKESHIRE	51	404	99
Dwr Cymru Welsh Water	Milford Haven Waterway	MILFORD HAVEN STW	62	386	99.8
Dwr Cymru Welsh Water	Pont-Shan Brook	LLANDDEWI VELFREY STW NARBERTH PEMB	42	376	99.9
Dwr Cymru Welsh Water	River Marlais	CSO at Narberth East SPS	45	314	99.3
Dwr Cymru Welsh Water	Manorbier Bay	MANORBIER TRANSFER PS MANORBIER TE	34	309	99.8
Dwr Cymru Welsh Water	Monk Haven Stream	ST. ISHMAELS STW	23	275	100
Dwr Cymru Welsh Water	Sprinkle Pill	Hook STW Inlet PS low level CSO	65	274	99.8
Dwr Cymru Welsh Water	New Inn Stream	AMROTH AND SUMMERHILL SCHEME PS 2	31	273	99.8
Dwr Cymru Welsh Water	Sandy Haven Pill	Tiers Cross WWTW Inlet CSO Pembrk	70	272	99.6
Dwr Cymru Welsh Water	Swansell Brook	WALTON WEST STW BALANCING TANK	24	266	99.9
Dwr Cymru Welsh Water	Rudbaxton Water	SPITTAL WWTW SPITTAL PEMBS	41	260	100
Dwr Cymru Welsh Water	U Creswell River	Broadmoor Sewage Pumping Station	29	233	89.5
Dwr Cymru Welsh Water	Castle Pill	M.Haven/Castle Pill CSO Pembs	83	219	99.8
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	Picton PS & Picton Fields CSO	48	214	66.2
Dwr Cymru Welsh Water	Esturial Waters At Rath	M'Ford Haven Rath CSO Milford Haven	95	203	99.8
Dwr Cymru Welsh Water	Pont-Shan Brook	LLANDDEWI VELFREY STW	24	198	99.9
Dwr Cymru Welsh Water	Fords Lake Stream	KILGETTY EAST PS KILGETTY EAST WWTW	31	190	99.5
Dwr Cymru Welsh Water	Narberth Brook	NARBERTH BRIDGE CSO	69	143	99.8
Dwr Cymru Welsh Water	Esturial Waters At Hakin Point	MILFORD HAVEN CSO	69	133	98
Dwr Cymru Welsh Water	Estuary East Of Sandy Haven	HERBRANDSTON WWTW HERBRANDSTON	16	133	100
Dwr Cymru Welsh Water	Llanion Pill, Milford Haven	WATER ST P'BROKE DK SWO	75	124	98.1
Dwr Cymru Welsh Water	Westfield Pill	CSO at Rosemarket STW	35	119	97.1
Dwr Cymru Welsh Water	Milford Haven	NEYLAND P.S. . .	42	114	99.6
Dwr Cymru Welsh Water	River Alun	PIT ST ST. DAVIDS SWO	54	113	61.6
Dwr Cymru Welsh Water	Western Cleddau	CSO 7 Union Hill, Haverfordwest	90	113	99.8
Dwr Cymru Welsh Water	Milford Haven Waterway	BURTON FERRY WWTW NEYLAND PEMBS	44	113	99.8
Dwr Cymru Welsh Water	Castle Pill	A COMBINED SEWER OVERFLOW AT BEACH	88	112	99.8
Dwr Cymru Welsh Water	Milford Haven	(B)MEYRICK ST SWO PEMBROKE DOCK	49	111	98.1
Dwr Cymru Welsh Water	River Anghof	WOLFSCASTLE STW	19	110	22.1
Dwr Cymru Welsh Water	Western Cleddau	Combined Sewer Overflow No. 6	54	101	96.2
Dwr Cymru Welsh Water	Eastern Cleddau	NARBERTH WEST STW	16	100	75.8
Dwr Cymru Welsh Water	Western Cleddau	NORTHGATE/FRED REES CSO HVRFORDWEST	51	99	99.2
Dwr Cymru Welsh Water	Cresswell River	BEGELLY CS0 BEGELLY KILGETTY	29	96	96
Dwr Cymru Welsh Water	Merlin'S Brook	Johnston Terminal SPS	28	92	99.8
Dwr Cymru Welsh Water	Pembroke River	HUNDLETON WWTW INLET STORM OVERFLOW	25	84	100
Dwr Cymru Welsh Water	Milford Haven Waterway	NEYLAND WWTW NEYLAND PEMBROKESHIRE	38	82	99.6
Dwr Cymru Welsh Water	Milford Haven	PROMENADE NEYLAND SWO	56	82	99.2
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	New Quay CSO New Quay Haverfordwest	50	76	99.8
Dwr Cymru Welsh Water	Swanswell Brook	BROADHAVEN SOUTH PS BROADHAVEN ,	20	73	98.8
Dwr Cymru Welsh Water	Saundersfoot Stream	SAUNDERSFOOT STW/PS SAUNDERSFOOT	33	72	99.7
Dwr Cymru Welsh Water	Pembroke River / Milford Haven	Penanr Fleet Street MH 4101 CSO	21	57	99.5
Dwr Cymru Welsh Water	Westfield Pill	Honeyborough SPS CSO	6	51	99.6
Dwr Cymru Welsh Water	Sprincle Pill,Daucleddau	HOOK WwTW	13	44	99.8
Dwr Cymru Welsh Water	Un-Named Stream	PENALLY SEWAGE PUMPING STATION	16	40	99.8
Dwr Cymru Welsh Water	Westfield Pill	ROSEMARKET STW MILFORD HAVEN	6	35	100
Dwr Cymru Welsh Water	Esturail Waters Milford Haven	MILFORD HAVEN STW	36	34	99.8
Dwr Cymru Welsh Water	Coastal Waters St Sleekstone	WALTON WEST STW	4	28	99.7
Dwr Cymru Welsh Water	River Hubberston Pill	PRIORY PS	16	27	99.8
Dwr Cymru Welsh Water	Milford Haven Waterway Estu'L	NEYLAND WWTW NEYLAND PEMBROKESHIRE	17	22	100
Dwr Cymru Welsh Water	Castle Pond	Mill Bridge CSO	33	19	99
Dwr Cymru Welsh Water	River Anghof	Storm Overflow at Wolfscastle Wastewater Treatment Works	11	15	49.4
Dwr Cymru Welsh Water	Milford Haven Waterway	Pembroke Dock STW(Emergency) Fort	6	13	100
Dwr Cymru Welsh Water	Westfield Pill Via Unnamed Watercourse	Houghton SPS CSO	6	7	99.8
Dwr Cymru Welsh Water	Colby Stream	AMROTH AND SUMMERHILL SCHEME PS	2	7	99.8
Dwr Cymru Welsh Water	Pembroke River	Pembroke Dock Sycamore Street CSO	13	6	99.2
Dwr Cymru Welsh Water	Cocheston Pill - Headwaters To Tidal Limit	Fleet St MH2103 CSO, Pennar	14	5	99.4
Dwr Cymru Welsh Water	Pembroke River	Lamphey WWTW Lamphey Near Pembroke Settled Storm	2	5	99.9
Dwr Cymru Welsh Water	Milford Haven Estuary	NEYLAND PROMENADE CSO , ,	12	4	99.2
Dwr Cymru Welsh Water	Westfeild Pill	Gaddarn Reach SPS CSO	6	4	99.8
Dwr Cymru Welsh Water	Saundersfoot Stream	MILFORD STREET SPS	3	3	99.8
Dwr Cymru Welsh Water	Coastal Waters	TENBY LIFEBOAT CSO CASTLE SQ TENBY	5	3	99.8
Dwr Cymru Welsh Water	Angle Bay	ANGLE WWTW PEMBROKE PEMBROKESHIRE	2	1	99.8
Dwr Cymru Welsh Water	Lower Mill Pond	CSO WOODBINE CLOSE PEMBROKE	4	1	99.7
Dwr Cymru Welsh Water	Saundersfoot Stream	BROOKLANDS PLACE SPS	1	1	99.8
Dwr Cymru Welsh Water	Upper Mill Pond	CSO at Holyland Rd Pembroke MH 1301	2	0	97.2
Dwr Cymru Welsh Water	Un-Named Stream	LYDSTEP PS	1	0	99.8
Dwr Cymru Welsh Water	Milford Haven Waterway	PEMBROKE DOCK WASTEWATER TREATMENT	2	0	100
Dwr Cymru Welsh Water	Milford Haven Estuary	Nelson Quay SPS CSO	1	0	99.8
Dwr Cymru Welsh Water	Unnamed Of Brandy Brook	Maes Ffynnon SPS CSO	1	0	99.3
Dwr Cymru Welsh Water	River Alun	VIC'GE RD ST.DAVIDS.SWO	0	0	3.8
Dwr Cymru Welsh Water	Saundersfoot Stre	VALLEY RD P S'S (4 & 4A) SAUNDERSFO	0	0	99.8
Dwr Cymru Welsh Water	Pembroke River	LAMPHEY WWTW LAMPHEY NEAR PEMBROKE	0	0	86
Dwr Cymru Welsh Water	Esturial Waters Of Pembroke River	Pembroke SPS	0	0	99.8
Dwr Cymru Welsh Water	Downstream Barrage / Pembroke River	Pembroke Town - Monkton Bridge CSO	0	0	99.4
Dwr Cymru Welsh Water	St Martins Brook	Haverfordwest Hawthorn Rise CSO	0	0	99.6
Dwr Cymru Welsh Water	Stream Above Beach	THE GLEN SAUNDERSFOOT PS . .	0	0	99.1
Dwr Cymru Welsh Water	River Alun	PEBBLES ST. DAVIDS SWO	0	0	3.8

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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