Mid and South Pembrokeshire was polluted by sewage 6,641 times in 2023
lasting 66,677 hours - that's 7.72 years!
- but monitoring was disabled in some locations, so could be more

Select the constituency from the drop-down

Constituency

✔ means we have experimental daily data since 2023

Totals for Mid and South Pembrokeshire in 2023

99 Sites polluted by Dwr Cymru Welsh Water

6,641 sewage dumps
66,677 h duration

That's 7.72 years! On average 18.2 times a day

Change Over Time

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Constituencies near Mid and South Pembrokeshire

Waterways in Mid and South Pembrokeshire

Pollution Summary 2023

Here are all the reported sewage overflow totals for Mid and South Pembrokeshire in 2023. 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 1 of the total 109 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Cresswell	Langdon STW Settled Storm	237	4,422	99.9
Dwr Cymru Welsh Water	Carew River	Carew WwTW Carew Pembrokeshire Settled Storm	234	4,160	99.4
Dwr Cymru Welsh Water	Cosheston Pill	COSHESTON STW . .	321	3,857	98.1
Dwr Cymru Welsh Water	Western Cleddau	Pont-Yr-Hafod Sewage Pumping Station	155	3,462	98.6
Dwr Cymru Welsh Water	Cartlet Brook	CLARBESTON STW HAVERFORDWEST PEMBS	218	2,720	100
Dwr Cymru Welsh Water	Angle Bay	Angle WWTW Pembroke Pembrokeshire Setteld Storm	147	2,674	100
Dwr Cymru Welsh Water	Coastal Waters At Porth Clais	ST DAVID'S WWTW ST DAVID'S PEMBS	135	2,631	100
Dwr Cymru Welsh Water	Hazelbeach Stream	Waterston WwTW Inlet CSO	269	2,629	100
Dwr Cymru Welsh Water	River Anghof	Letterston East STW SPS	120	2,453	100
Dwr Cymru Welsh Water	Coastal Waters At Saundersfoot	SAUNDERSFOOT STW/PS SAUNDERSFOOT	127	2,228	99.6
Dwr Cymru Welsh Water	West Cleddua	CSO@WOLFSDALE SPS	128	2,224	100
Dwr Cymru Welsh Water	Western Cleddau	Letterston West WwTW CSO	165	2,162	100
Dwr Cymru Welsh Water	Ford'S Lake	TEMPLETON STW STORM	162	2,103	100
Dwr Cymru Welsh Water	Deepford Brook	Clarbeston Road PS	116	2,015	100
Dwr Cymru Welsh Water	Milford Haven	ANGLE VILLAGE PS	111	1,760	98.5
Dwr Cymru Welsh Water	Est'L Waters Milford Haven	DALE WWTW - CSO	100	1,483	100
Dwr Cymru Welsh Water	Rubaxton Water	SPITTAL WWTW SPITTAL PEMBS	172	1,441	89.5
Dwr Cymru Welsh Water	Knock Brook	Keeston Works Inlet CSO	137	1,375	100
Dwr Cymru Welsh Water	Estuary East Of Sandy Haven	HERBRANDSTON WWTW HERBRANDSTON	69	1,248	100
Dwr Cymru Welsh Water	Nolton Bay	CSO SERVING NOLTON HAVEN SPS	73	1,102	100
Dwr Cymru Welsh Water	Pembroke River	HUNDLETON WWTW INLET STORM OVERFLOW	142	1,050	100
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	Merlins Bridge STW/Inlet SPS	123	985	99.9
Dwr Cymru Welsh Water	Tidal River Solva	SOLVA P.S. . .	59	961	99.9
Dwr Cymru Welsh Water	Deadman'S Lake Stream	STEYNTON SPS	56	913	99.8
Dwr Cymru Welsh Water	Western Cleddau	Combined Sewer Overflow No. 6	151	839	97.1
Dwr Cymru Welsh Water	Sandy Haven Pill	Tiers Cross WWTW Inlet CSO Pembrk	129	825	100
Dwr Cymru Welsh Water	Llangwm Pill	EMERGENCY DISCHARGE FROM LLANG	77	766	99.9
Dwr Cymru Welsh Water	Narberth Brook	NARBERTH WEST STW	90	708	99.3
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	Picton PS & Picton Fields CSO	133	646	100
Dwr Cymru Welsh Water	Manorbier Bay	MANORBIER TRANSFER PS MANORBIER TE	57	607	100
Dwr Cymru Welsh Water	River Ritec	STORM TANKS AT TENBY HEADWORKS TE	69	603	99.8
Dwr Cymru Welsh Water	Swansell Brook	WALTON WEST STW BALANCING TANK	47	601	99.6
Dwr Cymru Welsh Water	U Creswell River	Broadmoor Sewage Pumping Station	50	534	100
Dwr Cymru Welsh Water	New Inn Stream	AMROTH AND SUMMERHILL SCHEME PS 2	51	510	99.9
Dwr Cymru Welsh Water	River Anghof	WOLFSCASTLE PS	61	472	99.9
Dwr Cymru Welsh Water	Milford Haven Waterway	BURTON FERRY WWTW NEYLAND PEMBS	73	457	99.9
Dwr Cymru Welsh Water	Milford Haven Waterway	MILFORD HAVEN STW	66	455	99.9
Dwr Cymru Welsh Water	Winterton Marsh Stream	MARLOES WORKS INLET . .	69	425	100
Dwr Cymru Welsh Water	Coastal Wtrs Nr Stackpole Quay	STACKPOLE STW STACKPOLE	35	388	100
Dwr Cymru Welsh Water	Bosherton Lake	STACKPOLE STW (EMERGENCY) STACKPOLE	33	385	100
Dwr Cymru Welsh Water	Monk Haven Stream	SPS at St Ishmaels WwTW	19	359	8.4
Dwr Cymru Welsh Water	Sprinkle Pill	Hook STW Inlet PS low level CSO	81	347	100
Dwr Cymru Welsh Water	River Marlais	CSO at Narberth East SPS	44	336	100
Dwr Cymru Welsh Water	Beggars Reach Daugleddau	LLANGWM WWTW LLANGWM PEMBROKESHIRE	26	257	99.9
Dwr Cymru Welsh Water	Narberth Brook	NARBERTH BRIDGE CSO	98	256	100
Dwr Cymru Welsh Water	Esturial Waters At Rath	M'Ford Haven Rath CSO Milford Haven	111	231	99.1
Dwr Cymru Welsh Water	Western Cleddau	CSO 7 Union Hill, Haverfordwest	100	231	96
Dwr Cymru Welsh Water	Westfield Pill	CSO at Rosemarket STW	74	213	100
Dwr Cymru Welsh Water	Radford Pill	CAREW/MILTON WWTWS PEMBROKESHIRE	62	204	96.1
Dwr Cymru Welsh Water	Cresswell River	BEGELLY CS0 BEGELLY KILGETTY	44	201	100
Dwr Cymru Welsh Water	River Ritec	STORM TANKS AT TENBY HEADWORKS TE	16	186	99.8
Dwr Cymru Welsh Water	Milford Haven	NEYLAND P.S. . .	40	177	99.9
Dwr Cymru Welsh Water	Castle Pill	M.Haven/Castle Pill CSO Pembs	80	171	100
Dwr Cymru Welsh Water	Little Haven Stream	LITTLE HAVEN SPS HEAD OF BEACH LIT	16	168	95.8
Dwr Cymru Welsh Water	Merlin'S Brook	Johnston Terminal SPS	43	159	100
Dwr Cymru Welsh Water	Milford Haven Waterway	NEYLAND WWTW NEYLAND PEMBROKESHIRE	56	143	99.9
Dwr Cymru Welsh Water	Esturial Waters At Hakin Point	MILFORD HAVEN CSO	74	141	99.7
Dwr Cymru Welsh Water	Fords Lake Stream	KILGETTY EAST PS KILGETTY EAST WWTW	23	139	16.4
Dwr Cymru Welsh Water	Western Cleddau	NORTHGATE/FRED REES CSO HVRFORDWEST	61	133	100
Dwr Cymru Welsh Water	Milford Haven	PROMENADE NEYLAND SWO	64	130	96
Dwr Cymru Welsh Water	Saundersfoot Stream	SAUNDERSFOOT STW/PS SAUNDERSFOOT	56	122	99.5
Dwr Cymru Welsh Water	Llanion Pill, Milford Haven	WATER ST P'BROKE DK SWO	94	100	93.5
Dwr Cymru Welsh Water	River Anghof	Storm Overflow at Wolfscastle Wastewater Treatment Works	26	95	100
Dwr Cymru Welsh Water	Castle Pill	A COMBINED SEWER OVERFLOW AT BEACH	67	85	99.9
Dwr Cymru Welsh Water	An Unnamed Stream	NEW HEDGES PS ROWSTON HOLIDAY PARK	25	75	100
Dwr Cymru Welsh Water	Esturail Waters Milford Haven	MILFORD HAVEN STW	50	73	99.9
Dwr Cymru Welsh Water	Pembroke River / Milford Haven	Penanr Fleet Street MH 4101 CSO	21	65	99.9
Dwr Cymru Welsh Water	Tidal Waters Of Western Cleddau	New Quay CSO New Quay Haverfordwest	53	65	100
Dwr Cymru Welsh Water	Swanswell Brook	BROADHAVEN SOUTH PS BROADHAVEN ,	21	53	99.3
Dwr Cymru Welsh Water	Milford Haven	(B)MEYRICK ST SWO PEMBROKE DOCK	18	43	99.4
Dwr Cymru Welsh Water	Castle Pond	Mill Bridge CSO	44	39	99.4
Dwr Cymru Welsh Water	Saundersfoot Stre	VALLEY RD P S'S (4 & 4A) SAUNDERSFO	20	38	99.9
Dwr Cymru Welsh Water	River Alun	PIT ST ST. DAVIDS SWO	33	35	95.6
Dwr Cymru Welsh Water	Sprincle Pill,Daucleddau	HOOK WwTW	9	34	100
Dwr Cymru Welsh Water	Castle Pond	St Nicholas Crescent CSO, Pembroke	26	33	99.8
Dwr Cymru Welsh Water	Un-Named Stream	PENALLY SEWAGE PUMPING STATION	15	31	99.8
Dwr Cymru Welsh Water	River Hubberston Pill	PRIORY PS	16	29	99.9
Dwr Cymru Welsh Water	Swanswell Brook	BROADHAVEN NORTH PUMPING STATION	23	24	98.5
Dwr Cymru Welsh Water	Brandy Brook	NEWGALE SEWAGE TREATMENT WORKS	6	19	100
Dwr Cymru Welsh Water	Knightson Brook	LAMACK VALE PS LAMACK VALE TENBY ,	11	17	100
Dwr Cymru Welsh Water	Colby Stream	AMROTH AND SUMMERHILL SCHEME PS	5	16	100
Dwr Cymru Welsh Water	River Alun	PEBBLES ST. DAVIDS SWO	8	13	1.9
Dwr Cymru Welsh Water	Cocheston Pill - Headwaters To Tidal Limit	Fleet St MH2103 CSO, Pennar	18	12	99.9
Dwr Cymru Welsh Water	Freshwater East Stream	FRESHWATER OUTFALL PUMPING STATION	2	11	100
Dwr Cymru Welsh Water	Westfield Pill	Honeyborough SPS CSO	5	11	100
Dwr Cymru Welsh Water	Pembroke River	Pembroke Dock Sycamore Street CSO	18	8	98.4
Dwr Cymru Welsh Water	Saundersfoot Stream	BROOKLANDS PLACE SPS	5	6	99.9
Dwr Cymru Welsh Water	Milford Haven Waterway	Pembroke Dock STW(Emergency) Fort	4	6	100
Dwr Cymru Welsh Water	Milford Haven Estuary	NEYLAND PROMENADE CSO , ,	16	5	100
Dwr Cymru Welsh Water	Saundersfoot Stream	MILFORD ST P S'S (1 & 1A) SAUNDERSF	6	5	100
Dwr Cymru Welsh Water	Westfeild Pill	Gaddarn Reach SPS CSO	4	4	99.9
Dwr Cymru Welsh Water	Pembroke River	Lamphey WWTW Lamphey Near Pembroke Settled Storm	1	3	99.5
Dwr Cymru Welsh Water	Saundersfoot Stream	MILFORD STREET SPS	5	3	100
Dwr Cymru Welsh Water	River Alun	VIC'GE RD ST.DAVIDS.SWO	3	2	44.2
Dwr Cymru Welsh Water	Coastal Waters	TENBY LIFEBOAT CSO CASTLE SQ TENBY	2	1	100
Dwr Cymru Welsh Water	Cwm Mawr Strea	PENYCWM PS	3	1	99.6
Dwr Cymru Welsh Water	Esturial Waters Of Pembroke River	Pembroke SPS	1	0	100
Dwr Cymru Welsh Water	Upper Mill Pond	CSO at Holyland Rd Pembroke MH 1301	1	0	99.1
Dwr Cymru Welsh Water	Downstream Barrage / Pembroke River	Pembroke Town - Monkton Bridge CSO	1	0	100
Dwr Cymru Welsh Water	Cartlett Brook	Crundale Sewage Pumping Station	0	0	100
Dwr Cymru Welsh Water	Westfield Pill Via Unnamed Watercourse	Houghton SPS CSO	0	0	99.2
Dwr Cymru Welsh Water	Brandy Brook	NEWGALE SEWAGE TREATMENT WORKS	0	0	99.9
Dwr Cymru Welsh Water	St Martins Brook	Haverfordwest Hawthorn Rise CSO	0	0	100
Dwr Cymru Welsh Water	Stream Above Beach	THE GLEN SAUNDERSFOOT PS . .	0	0	100
Dwr Cymru Welsh Water	Milford Haven Estuary	Nelson Quay SPS CSO	0	0	99.9
Dwr Cymru Welsh Water	Unnamed Of Brandy Brook	Maes Ffynnon SPS CSO	0	0	100
Dwr Cymru Welsh Water	Lower Mill Pond	CSO WOODBINE CLOSE PEMBROKE	0	0	100
Dwr Cymru Welsh Water	Pont-Shan Brook	LLANDDEWI VELFREY STW NARBERTH PEMB	0	0	0
Dwr Cymru Welsh Water	Un-Named Stream	LYDSTEP PS	0	0	100

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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