Newport West and Islwyn was polluted by sewage 2,011 times in 2023
lasting 17,962 hours - that's 2.08 years!
- but monitoring was disabled in some locations, so could be more

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Constituency

✔ means we have experimental daily data since 2023

Totals for Newport West and Islwyn in 2023

35 Sites polluted by Dwr Cymru Welsh Water

2,011 sewage dumps
17,962 h duration

That's 2.08 years! On average 5.5 times a day

Change Over Time

Take Action

Your local MP is Ruth Jones (Labour) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near Newport West and Islwyn

Waterways in Newport West and Islwyn

Pollution Summary 2023

Here are all the reported sewage overflow totals for Newport West and Islwyn 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 2 of the total 37 CSO locations had reporting enabled for less than half the year, of which 2 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Severn Estuary	WESTERN VALLEY TRUNK SEWER CSO	207	4,036	99.6
Dwr Cymru Welsh Water	Severn Estuary	RHYMNEY VALLEY TRUNK SEWER CSO	141	2,394	100
Dwr Cymru Welsh Water	River Rhymney	A CSO 700M SE OF PLAS MACHEN COTAGE	143	2,179	100
Dwr Cymru Welsh Water	River Ebbw	Tanybryn Risca CSO, Pontymister	115	1,479	98.7
Dwr Cymru Welsh Water	Ebbw Fawr	Rhiwderin No 6258 in Field CSO	106	1,470	97
Dwr Cymru Welsh Water	Ebbw Estuary	Maesglas SPS	146	1,212	95.7
Dwr Cymru Welsh Water	River Ebbw	Crosskeys Waunfawr Park CSO	104	1,023	96.3
Dwr Cymru Welsh Water	Ebbw Fawr	Tredegar Park Golf Club CSO	134	899	98.2
Dwr Cymru Welsh Water	Ebbw River	CSO 36 CWMCARN HIGH SCHOOL CHAPEL F	78	684	100
Dwr Cymru Welsh Water	River Sirhowy	CSO 42 92 Tredegar St Cross Keys	57	560	100
Dwr Cymru Welsh Water	Ebbw River	CSO 47 ALCAN WORKS ROGERSTONE	43	442	95.9
Dwr Cymru Welsh Water	Ebbw River	Car Park of Old Globe CSO, St John Crescent	90	419	98
Dwr Cymru Welsh Water	Nant Carn Brook	Pontywaun CSO, Newport	71	307	97
Dwr Cymru Welsh Water	Sirhowy River	Blackwood Cwmgelli CSO	60	163	85.7
Dwr Cymru Welsh Water	Sirhowy River	Blackwood Oakdale Rhiw Hill CSO	72	123	98.1
Dwr Cymru Welsh Water	River Ebbw	CSO 33 REAR BRYNGWYN ROAD/HIGH ST	61	108	97.8
Dwr Cymru Welsh Water	Ebbw River	15 Tregwilym Close CSO	60	83	99.4
Dwr Cymru Welsh Water	Sirhowy River	CSO CWM ROAD ARGOED CAERPHILLY	23	54	99.7
Dwr Cymru Welsh Water	Nant Gwyddon Via Surface Water Sewer And A Culvert	High Street CSO, Abercarn	47	51	99.9
Dwr Cymru Welsh Water	River Sirhowy	CSO 16 Woodfield Row Blackwood	22	44	100
Dwr Cymru Welsh Water	Ebbw Fawr	CRUMLIN SWFFRYD CSO CAERPHILLY	52	42	73.9
Dwr Cymru Welsh Water	Sirhowy River	Markham Colliery Gun Club CSO	9	34	100
Dwr Cymru Welsh Water	River Ebbw	CSO 52 TT Electronics Tregwilym Ind	7	32	100
Dwr Cymru Welsh Water	River Ebbw	S/O 108 Commercial St, Risca CSO	41	31	99.3
Dwr Cymru Welsh Water	Ebbw Fawr River	21 Gladstone St CSO, Crosskeys	26	26	98.6
Dwr Cymru Welsh Water	River Ebbw	MALVERN TERRACE CSO	15	11	100
Dwr Cymru Welsh Water	Rhynys Brook	4 Tredegar Terrace CSO	4	9	39
Dwr Cymru Welsh Water	River Ebbw	Forge Lane near Vicarage CSO, Bassaleg	20	7	79.5
Dwr Cymru Welsh Water	Ebbw Fawr	Thornhill Gardens CSO, Rogerstone	16	6	97.3
Dwr Cymru Welsh Water	River Ebbw	WVTS-North Celynen Colliery CSO	5	6	99.7
Dwr Cymru Welsh Water	River Ebbw	CEDAR WOOD DRIVE CSO	19	5	100
Dwr Cymru Welsh Water	River Ebbw Fawr	CSO at Bassaleg Forge Lane near Nos 5 & 6	4	4	100
Dwr Cymru Welsh Water	River Ebbw	R/O Cobden St CSO, Crosskeys	1	3	100
Dwr Cymru Welsh Water	River Ebbw	WVTS - NEWBRIDGE CSO CAERPHILLY	6	1	100
Dwr Cymru Welsh Water	Rhynys Brook	Rifleman St CSO, Risca	6	1	98.2
Dwr Cymru Welsh Water	River Sirhowy	CSO at Hollybush - Ancient Druid	0	0	0
Dwr Cymru Welsh Water	River Sirhowy	Blackwood 100 Steps CSO	0	0	0

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

With generous support from:

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