Top of the Poops | Constituency | Pontypridd| Polluted by Dwr Cymru Welsh Water

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✔ means we have experimental daily data since 2023

Totals for Pontypridd in 2024

49 Sites polluted by Dwr Cymru Welsh Water

3,124 sewage dumps

22,612 hours duration

That's 2.62 years! On average 8.6 times a day

Change Over Time

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Constituencies near Pontypridd

Waterways in Pontypridd

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Pontypridd 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 4 of the total 53 CSO locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Ewenny Fach	CSO at Hillside Avenue Llanharan	205	3,068	94
Dwr Cymru Welsh Water	River Ely	DUFFRYN ISAF SEWAGE TREATMENT WORKS	199	2,968	99.7
Dwr Cymru Welsh Water	River Taff	Cilfynydd STW Cilfynydd Pontypridd Settled Storm	157	2,597	99.8
Dwr Cymru Welsh Water	River Taff	Settled Storm at Cynon Valley Wastewater Treatment Works	106	1,586	99.8
Dwr Cymru Welsh Water	River Cynon	PONTCYNON PIPE BRIDGE CSO ABERCYNON	106	1,276	98.1
Dwr Cymru Welsh Water	River Taff	Tonteg Road, Upper Boat CSO and Pumping Station Emergency Overflow	150	1,107	99.8
Dwr Cymru Welsh Water	Nant Myddlyn	CSO ADJACENT TO PARISH ROAD BEDDA	151	941	97.5
Dwr Cymru Welsh Water	River Rhondda	A COMBINED SEWER OVERFLOW GYFEILLON	141	854	99.8
Dwr Cymru Welsh Water	Ewenni Fach	CSO SOUTH OF RAILWAY LLANHAREN	109	841	91
Dwr Cymru Welsh Water	Nant Clydach	Tank Near Pit CSO Ynysybwl	129	785	93.6
Dwr Cymru Welsh Water	River Taff	CYNON VALLEY STW GLYNCOCH PONTY	50	776	99.8
Dwr Cymru Welsh Water	River Taff	Abercynon Wood Rd SPS	85	639	99.7
Dwr Cymru Welsh Water	River Ely	Lanelay Park - CSO	120	628	99.8
Dwr Cymru Welsh Water	Nant Clydach	GLYN STREET CSO GLYN ST YNYSYBWL	106	577	98.7
Dwr Cymru Welsh Water	River Taff	CASTLE INN CSO ASSET NO 32280	109	537	98.5
Dwr Cymru Welsh Water	River Rhondda	CSO at Pwllgwuan Syphons, Millfield, Pontypridd	110	495	98
Dwr Cymru Welsh Water	River Cynon	Oxford St CSO, Mountain Ash	107	457	98.3
Dwr Cymru Welsh Water	River Clun	Penygawsi CSO	66	349	99.8
Dwr Cymru Welsh Water	Nant Clydach	CSO at Clydach Rd, Ynysbwl	50	275	95.7
Dwr Cymru Welsh Water	River Taff	YNYSANGHARAD PARK CSO	97	252	99.8
Dwr Cymru Welsh Water	River Cynon	CSO Opposite Miskin Hotel, far side of railway	46	224	42.3
Dwr Cymru Welsh Water	Nant Clydach	Old Parish Road CSO, Ynysbwl	88	219	92.7
Dwr Cymru Welsh Water	River Taff	Rhydfelin CSO Off Lionel Terrace	33	173	98.8
Dwr Cymru Welsh Water	River Cynon	Glassbrook Terrace CSO, Penrhiwceiber	56	137	98.1
Dwr Cymru Welsh Water	Nant Arian	New Society Garage CSO	50	131	99.8
Dwr Cymru Welsh Water	River Taff	Crossbrook St CSO, Pontypridd	50	122	94.9
Dwr Cymru Welsh Water	River Cynon	NEWTOWN COMMUNITY HALL CSO	36	93	99
Dwr Cymru Welsh Water	River Cynon	Duffryn Rd Mount 2 CSO	28	86	99
Dwr Cymru Welsh Water	Nant Tyrarlwudd	Penycoedcae SPS	70	83	99.9
Dwr Cymru Welsh Water	Rhondda River	Pavia Courth CSO, Pontypridd	68	79	95.3
Dwr Cymru Welsh Water	River Cynon	Penrhiwceiber Point D CSO	37	39	96.6
Dwr Cymru Welsh Water	River Rhondda	Pellgwaun CSO	29	36	99.8
Dwr Cymru Welsh Water	River Clun Via An Unnamed Ditch	Talbot Green CSO	15	34	27.3
Dwr Cymru Welsh Water	R Cynon - Conf Aman R To Conf R Taff	Station Terrace CSO, Penrhiwceiber	25	29	82.8
Dwr Cymru Welsh Water	River Taff	Pontypridd West Street CSO	49	24	98.9
Dwr Cymru Welsh Water	River Rhondda	Lower Mill Street CSO Pontypridd	14	22	96.4
Dwr Cymru Welsh Water	Nant Cymdda Bach	Brynteg Park Pumping Station Beddau	14	19	99.5
Dwr Cymru Welsh Water	Nant Cae-Dudwg	End of Park Place CSO, Cilfynydd	11	10	99.4
Dwr Cymru Welsh Water	Culvert	NEW ROAD SEWERAGE SYSTEM (REDESIGNE	16	7	77
Dwr Cymru Welsh Water	River Rhondda	Lanelay Crescent CSO, Maesycoed	14	6	98.4
Dwr Cymru Welsh Water	River Taff	YNYSANGHARAD HIGH LEVEL RELIEF CSO	2	4	99.4
Dwr Cymru Welsh Water	River Cynon	TOWN HALL	2	4	99.8
Dwr Cymru Welsh Water	River Taff	Sion Street Sewage Pumping Station	1	2	99.8
Dwr Cymru Welsh Water	River Rhondda	Pwllgwaun Rd CSO, pontypridd	5	2	99.1
Dwr Cymru Welsh Water	R Taff - Conf Rhondda R To Castle Street	CSO at Treforest Llantwit Rd A	6	1	82.1
Dwr Cymru Welsh Water	River Cynon	Cwmpennar CSO, Adj Low Rd, Mountain Ash	2	1	59.3
Dwr Cymru Welsh Water	River Nant Felin Fach	Llanharry SPS	1	0	99.8
Dwr Cymru Welsh Water	River Taff	Taff St CSO, Pontypridd	2	0	94.9
Dwr Cymru Welsh Water	Nant Clydach	CSO O/S 2 Clydach Terrace, Ynysybwl	1	0	8.4
Dwr Cymru Welsh Water	River Cynon	Abercynon Rugby Club CSO	0	0	96.9
Dwr Cymru Welsh Water	Taff	Cardiff Road CSO, Pontypridd	0	0	87.3
Dwr Cymru Welsh Water	River Cynon	No 10 Hamilton St CSO, Mountain Ash	0	0	17.7
Dwr Cymru Welsh Water	Nant Cae-Dudwg	PARK PLACE CSO	0	0	99.8

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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(C) 2020-2024 Top-Of-The-Poops CC-BY-SA 4.0,
(C) Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2024,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis (C) 2024 Top-Of-The-Poops

Pontypridd Polluted by sewage 3,124 times in 2024 lasting 22,612 hours - That's 2.62 years! Monitoring fell below 50% in some locations so could be more

Pontypridd