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

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Live data for Torfaen in 2026

So far this year (as of 18 May 2026, 12:00) there has been 8,191 hours of sewage overflows, from 61 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s

Totals for Torfaen in 2025

46 Sites polluted by Dwr Cymru Welsh Water

1,959 sewage dumps

11,718 hours duration

That's 1.36 years. On average 5.4 times a day

Change Over Time

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Constituencies near Torfaen

Waterways in Torfaen

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Torfaen in 2025. 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 2 of the total 52 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year. Of these 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Lwyd	LLANFRECHFA STORM TANKS PONTHIR	125	1,535	99.9
Dwr Cymru Welsh Water	River Llwyd	CSO at PONTYPOOL CHARLESVILLE TRUNK SEWAR	89	1,374	99.5
Dwr Cymru Welsh Water	River Lwyd	Chapel Lane CSO	68	1,241	97.4
Dwr Cymru Welsh Water	River Lwyd	CSO at Griffithstown Subsidary Sewer	98	809	99.3
Dwr Cymru Welsh Water	River Lwyd	CSO OPPOSITE THE JOB CENTRE IN	113	625	98.4
Dwr Cymru Welsh Water	Cwm Ffrwd	VIADUCT ROAD CSO GARNIFFAITH ABERSY	111	548	98.4
Dwr Cymru Welsh Water	River Lwyd	New Road CSO, Pontypool	80	436	99
Dwr Cymru Welsh Water	Inland Waters	TY COCH CSO TY COCH WAY CWMBRAN ,	56	431	99.2
Dwr Cymru Welsh Water	River Lwyd - Source To Conf Dowlais Bk	Old Road CSO, Abersychan	82	421	98.5
Dwr Cymru Welsh Water	Cwmbran Brook Via Surface Water Sewer	Porthmawr Road CSO, Cwmbran	93	389	98.2
Dwr Cymru Welsh Water	River Lwyd	Pontnewynydd Mill Rd CSO	77	381	99.1
Dwr Cymru Welsh Water	River Lwyd	Pontypool Freeholdland Rd	52	317	95.5
Dwr Cymru Welsh Water	River Lwyd	Pontypool (Pontymoile) CSO	60	307	99.4
Dwr Cymru Welsh Water	River Lwyd	St Albans School CSO, Pontypool	65	301	97.4
Dwr Cymru Welsh Water	Blaen Bran Brook	Brookland Terrace Rec Ground CSO	49	288	99.9
Dwr Cymru Welsh Water	Culvert Leading To River Lwyd	Charles Street CSO	40	222	99.6
Dwr Cymru Welsh Water	River Lwyd	Blaenavon Band Hut MH 57A SWO 2	42	217	99.3
Dwr Cymru Welsh Water	River Lwyd	CSO at Blaenavon Station Terrace	55	212	97.2
Dwr Cymru Welsh Water	Avon Lwyd	Cwmbran Somerset Rd CSO	37	205	99.5
Dwr Cymru Welsh Water	Surface Water Sewer And Culver To Cwm Bran Brook	Belle Vue Road CSO, Old Cwmbran	43	174	99.3
Dwr Cymru Welsh Water	River Lwyd	Blaenavon Forgeside CSO	24	167	99.4
Dwr Cymru Welsh Water	Dowlias Brook	The Meads CSO, Llantarnum	28	138	99.9
Dwr Cymru Welsh Water	River Lwyd	Abersychan CSO Coed-Yr-Eos Farm	58	137	99.9
Dwr Cymru Welsh Water	Nant Y Milwr Via Surface Water Sewer And An Unnamed Watercourse	Rede Road CSO	24	102	99.8
Dwr Cymru Welsh Water	River Lwyd	CSO at Cwmbran Sebastopol Avondale Rd	37	93	99.1
Dwr Cymru Welsh Water	Trosnant Brook	Leisure Centre CSO Trosnant Street	29	87	95.4
Dwr Cymru Welsh Water	River Lwyd	LOWER NEW INN (PONTYFELIN LANE	16	82	99.8
Dwr Cymru Welsh Water	River Lwyd	Snatchwood Rd CSO	32	77	97.5
Dwr Cymru Welsh Water	River Lwyd Via Culvert And Unnamed Watercourse	Rear of 15 Llwyn Onn CSO Croesyceiliog	20	63	89.4
Dwr Cymru Welsh Water	River Lwyd	RISING SUN BRIDGE CSO	41	62	96.5
Dwr Cymru Welsh Water	River Lwyd	HOSPITAL ROAD CSO ST JOHNS AMBULANCE	40	47	99.9
Dwr Cymru Welsh Water	River Lwyd	Rose Cottage CSO	38	40	99.9
Dwr Cymru Welsh Water	River Lwyd	Pontypool Hanbury Rd/Italian Gardens CSO	31	34	95.3
Dwr Cymru Welsh Water	River Lwyd	Trevethin CSO	12	30	39.1
Dwr Cymru Welsh Water	River Llwyd	CSO at Pontypool-Coedygric Panteg Road	21	23	99.5
Dwr Cymru Welsh Water	River Lwyd	103 Beaumaris Drive Cwmbran CSO	7	20	99.9
Dwr Cymru Welsh Water	Blaen Bran Brook	Llanfrechra Rose Cottage CSO	10	19	80.3
Dwr Cymru Welsh Water	River Lwyd	Convent Garden CSO, Llantarnam	10	19	99.5
Dwr Cymru Welsh Water	River Lwyd	Stanley Place CSO, Pontnewydd, Cwmbran	21	15	92.2
Dwr Cymru Welsh Water	River Lwyd	Pontnewynydd Mill Rd O/S No 4 CSO	2	5	99.9
Dwr Cymru Welsh Water	River Lwyd	7 Olway Close CSO, Llanyravon	5	3	100
Dwr Cymru Welsh Water	River Lwyd	Coed Farm CSO Cwmavon Blaenavon	2	3	99.9
Dwr Cymru Welsh Water	Trosnant Brook	CSO at Crumlin Rd 2, Pontypool	9	3	87.2
Dwr Cymru Welsh Water	River Lwyd	PONTNEWYNYDD CSO	4	1	99.7
Dwr Cymru Welsh Water	River Lwyd	CSO at Rosemary lane End of Car Park	2	0	89.4
Dwr Cymru Welsh Water	River Lwyd	Hospital Rd CSO, Pontnewynydd	1	0	99.8
Dwr Cymru Welsh Water	River Lwyd	2 Llangorse Road CSO Llanyravon	0	0	82.7
Dwr Cymru Welsh Water	River Lwyd	3 Olway close CSO Llanyravon	0	0	83
Dwr Cymru Welsh Water	Nant-Y-Milwr	Coed Eva Mill CSO Coed Eva Cwmbran	0	0	0
Dwr Cymru Welsh Water	Cwmbran Brook	Cwmbran Woodside Road CSO	0	0	100
Dwr Cymru Welsh Water	River Lwyd	Leigh Rd CSO, Pontypool	0	0	99.9
Dwr Cymru Welsh Water	River Lwyd	Pleasant Court CSO, Limekiln Rd, Pontypool	0	0	99.4

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. Live sewage data from Stream Water API

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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