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

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Constituency

✔ means we have experimental daily data since 2023

Totals for Rhondda in 2023

61 Sites polluted by Dwr Cymru Welsh Water

3,726 sewage dumps
22,257 h duration

That's 2.58 years! On average 10.2 times a day

Change Over Time

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Constituencies near Rhondda

Waterways in Rhondda

Pollution Summary 2023

Here are all the reported sewage overflow totals for Rhondda 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 3 of the total 72 CSO locations had reporting enabled for less than half the year, of which 3 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Rhondda River Fawr	REGENT ST CSO TREORCHY RHONDDA	177	2,276	99.8
Dwr Cymru Welsh Water	River Rhondda	Brook Street Combined Sewer Overflow	202	2,008	99.9
Dwr Cymru Welsh Water	Nant Clydach	A CSO at Clydach Vale Davies Street	152	1,243	98.3
Dwr Cymru Welsh Water	Rhondda Fawr	Ton Pentre PS CSOTont Pentre RCT	178	1,241	95.6
Dwr Cymru Welsh Water	River Rhondda Fach	CSO at CROSS STREET YNYSHIR R-C-T	135	1,199	100
Dwr Cymru Welsh Water	Rhondda River Via A Culvert	Rees Street 71 CSO, Pentre	89	1,186	33.1
Dwr Cymru Welsh Water	River Rhondda Fawr	Rear of Richards Terrace CSO	108	1,141	99.2
Dwr Cymru Welsh Water	River Rhondda Fach	R/O Tylorstown Primary School CSO, Tylorstown	142	1,118	98.7
Dwr Cymru Welsh Water	River Rhondda Fach	Maerdy Station Road CSO	124	883	95.9
Dwr Cymru Welsh Water	River Rhondda Fach	Ferndale Road CSO Tylorstown RCT	91	860	99.1
Dwr Cymru Welsh Water	River Rhondda Fach	Station Rd CSO, Ferndale	142	855	98.7
Dwr Cymru Welsh Water	River Rhondda Fach	Ferndale Banana Tip CSO Additional	65	744	72.1
Dwr Cymru Welsh Water	River Rhondda Fach	Rear of Fir St CSO, Ferndale	111	686	98.7
Dwr Cymru Welsh Water	Rhondda Fawr	Station Rd CSO, Dinas, Porth	122	616	89.7
Dwr Cymru Welsh Water	Rhondda Fawr	Gelligaled Pk CSO Ystrad Rhondda	123	615	98.3
Dwr Cymru Welsh Water	Rhondda Fawr River	CSO GYLFACH ROAD PORTH RHONDDA	123	608	96
Dwr Cymru Welsh Water	Nant Clydach	CSO at Tonypandy, Rear of De Winton St	86	506	98.5
Dwr Cymru Welsh Water	Rhondda Fach	CSO at Blaenllechau School St	97	479	98.3
Dwr Cymru Welsh Water	River Rhondda Fach	FERNDALE BANANA TIP CSO	101	437	98.9
Dwr Cymru Welsh Water	Rhondda R - Source To Conf River Rhondda Fach	Penygraig Rd CSO, Penygraig	100	368	98.3
Dwr Cymru Welsh Water	River Rhondda Fach	Rear of Blake St CSO, Maerdy	69	362	99.2
Dwr Cymru Welsh Water	Rhondda Fawr River	GLANNANT ST/DINAS ROAD CSO	89	327	99.1
Dwr Cymru Welsh Water	Rhondda Fach	FERNDALE BANANA TIP SSO OLD SCHOOL	91	254	100
Dwr Cymru Welsh Water	Rhondda Fawr	CSO O/S Welcome Inn, Tylacelyn Rd, Penygraig	100	246	99.1
Dwr Cymru Welsh Water	River Rhondda Fach	Blaenllechau Taff St CSO	64	238	97.5
Dwr Cymru Welsh Water	Nant Clydach	Railway Terrace CSO, Clydach Vale	67	174	99.6
Dwr Cymru Welsh Water	River Rhondda	A Combined Sewer Overflow, Trehafod	13	162	95.1
Dwr Cymru Welsh Water	River Rhondda Fach	Highfield Industrial Estate CSO, Ferndale	36	158	96.3
Dwr Cymru Welsh Water	Rhondda Fawr River	Blaencwm Rd/Tydraw Terrace CSO	42	154	99.6
Dwr Cymru Welsh Water	Rhondda River	CSO at Rear of George Street, Treherbert	46	125	56.9
Dwr Cymru Welsh Water	River Rhondda	Llwynypia Rd CSO, Tonypandy	73	124	99.1
Dwr Cymru Welsh Water	Rhondda Fach River	PONTYGWAITH BRIDGE CSO ASSET 71188	61	107	98.1
Dwr Cymru Welsh Water	River Rhondda Fach	CSO OPP 37 EDMONDES ST TYLORSTOWN	39	104	96.6
Dwr Cymru Welsh Water	Rhondda Fawr	CSO to rear of 8 Griffin Park	36	103	100
Dwr Cymru Welsh Water	River Rhondda	Trehafod Pumping Station	80	87	99.8
Dwr Cymru Welsh Water	Rhondda Fawr	REES STREET PUMPING STATION GELLI	35	54	99.8
Dwr Cymru Welsh Water	Rhondda River Via A Culvert	Old Brithweunydd Road CSO, Tonypandy	57	49	99.8
Dwr Cymru Welsh Water	Rhondda Fach	CSO at Blaenllechau Commercial & George St Jn	15	45	99.1
Dwr Cymru Welsh Water	River Rhondda	River Terrace CSO, Treorchy, Rhondda	44	39	100
Dwr Cymru Welsh Water	Rhondda Fawr	CSO at Penycraig - Tylacelyn Road	35	33	94
Dwr Cymru Welsh Water	Rhondda Fawr	CSO OFF YNYSCYNON ROAD TREALAW	13	23	100
Dwr Cymru Welsh Water	Rhondda River Fawr	Llwynypia SPS	9	23	100
Dwr Cymru Welsh Water	Rhondda Fach	Cwmparc Railway Terrace CSO	15	23	99.8
Dwr Cymru Welsh Water	River Rhondda Fach	CSO at Wattstown-Bailey St Land Recla	7	22	18.7
Dwr Cymru Welsh Water	River Rhondda Fach	Blaenllechau Long Row CSO	7	21	99.9
Dwr Cymru Welsh Water	River Rhondda Fach	Aberrhondda Road CSO	14	18	40.5
Dwr Cymru Welsh Water	River Rhondda Fach	James Terrace CSO	17	18	96.7
Dwr Cymru Welsh Water	River Rhondda Fawr	Treherbert Ind Est CSO Treherbert	8	13	99.9
Dwr Cymru Welsh Water	Rhondda Fawr	Treherbert Bute/Corbett/David St Junction CSO	8	11	100
Dwr Cymru Welsh Water	Rhondda Fach	Dolgwilym River Bridge CSO	5	10	99.9
Dwr Cymru Welsh Water	Rhondda Fach River	JUNCT OF BRONDEG AND PENRHYS ST CSO	6	9	100
Dwr Cymru Welsh Water	River Rhondda Fawr	LEWIS STREET CSO & PUMPING STATION	11	8	100
Dwr Cymru Welsh Water	Rhondda Fawr	ELISABETH CLOSE CSO PENTRE RCT	11	8	100
Dwr Cymru Welsh Water	Rhondda Fawr River	Rear of William St CSO, Ystrad	5	6	99.1
Dwr Cymru Welsh Water	Rhondda R - Source To Conf River Rhondda Fach	Penygraig Nantgwyn St/Hill St Jn CSO	14	5	99.6
Dwr Cymru Welsh Water	Nant Ystradffernol Via A Culvert	Blaen-y-Cwm Terrace CSO	8	4	99.7
Dwr Cymru Welsh Water	River Rhondda Fach	Ferndale Banana Tip No.1 CSO	2	1	1.9
Dwr Cymru Welsh Water	River Rhondda Fach	CSO at Ferndale btw Taff St & Station Rd	3	0	100
Dwr Cymru Welsh Water	River Rhondda	Cymmer Rd CSO, Porth	1	0	100
Dwr Cymru Welsh Water	Rhondda Fawr River	2 Clarence St CSO, Pentre	1	0	100
Dwr Cymru Welsh Water	Rhondda Fawr	CSO at 136 Tyntyla Road, Tonypandy	1	0	73.2
Dwr Cymru Welsh Water	River Rhondda Fawr	CSO at Junct Ystrad/Church Road Ystrad	0	0	0
Dwr Cymru Welsh Water	Rhondda Fach River	East Rd CSO Tylorstown	0	0	57.4
Dwr Cymru Welsh Water	Rhondda Fach	CSO at FURNACE ROAD PONTYGWAITH RCT	0	0	100
Dwr Cymru Welsh Water	River Cynon	Pentre - Llewellyn Street CSO	0	0	99.7
Dwr Cymru Welsh Water	Rhondda River	Treherbert - Opposite Railway CSO	0	0	100
Dwr Cymru Welsh Water	River Rhondda Fawr	GELLI CROSSING PUMPING STATION RHON	0	0	100
Dwr Cymru Welsh Water	River Rhondda	Herbert St CSO	0	0	0
Dwr Cymru Welsh Water	Rhondda Fawr	Treherbert Pumping Station, Park Close	0	0	99.8
Dwr Cymru Welsh Water	Nant Cymparc	Junction of Sunnyhill & Park Crescent CSO, Cwmparc	0	0	0
Dwr Cymru Welsh Water	River Rhondda	CSO AT CADWGAN TERRACE TREHAFOD	0	0	100
Dwr Cymru Welsh Water	Rhonda Fawr River	TREORCHY CSO - M/H AT SIDE OF BOYS	0	0	95.3

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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Rhondda was polluted by sewage 3,726 times in 2023 lasting 22,257 hours - that's 2.58 years! - but monitoring was disabled in some locations, so could be more

61 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2023

Data Sources & Accuracy

Media Queries

Please Support Us

Rhondda was polluted by sewage 3,726 times in 2023
lasting 22,257 hours - that's 2.58 years!
- but monitoring was disabled in some locations, so could be more