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✔ means we have experimental daily data for 2023

Totals for Islwyn in 2022

38 Sites polluted by Dwr Cymru Welsh Water

1,850 sewage dumps
9,179 h duration

That's 1.06 years! On average 5.1 times a day

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Constituencies near Islwyn

Waterways in Islwyn

Pollution Summary 2022

Here are all the reported sewage overflow totals for Islwyn in 2022. Sometimes sewage can be being dumped for months at a time.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Ebbw	Tanybryn Risca CSO, Pontymister	90	1,096	99.1
Dwr Cymru Welsh Water	River Rhymney	Tredomen AFC CSO, Ystrad Mynach	94	1,013	100
Dwr Cymru Welsh Water	Sirhowy River	CSO 20 OLD MILL NEWPORT ROAD	111	953	98.5
Dwr Cymru Welsh Water	River Ebbw	Crosskeys Waunfawr Park CSO	85	947	99.1
Dwr Cymru Welsh Water	River Rhymney	CSO at Glan-yr-Afon Nursing Home No2, Pengam	96	914	99.9
Dwr Cymru Welsh Water	Ebbw River	CSO 36 CWMCARN HIGH SCHOOL CHAPEL F	64	553	99.5
Dwr Cymru Welsh Water	River Bargoed	Bedwellty Road CSO	142	551	95.9
Dwr Cymru Welsh Water	River Sirhowy	CSO 42 92 Tredegar St Cross Keys	38	437	100
Dwr Cymru Welsh Water	River Sirhowy	Springfield Est CSO, Pontllanfraith	83	409	93.2
Dwr Cymru Welsh Water	River Rymney	MAESYCWMMER A472 JUNCTION CSO	74	406	99.4
Dwr Cymru Welsh Water	River Rhymney	CSO at Glan-yr-Afon Nursing Home 1	101	303	99
Dwr Cymru Welsh Water	Sirhowy River	CSO 19 Gryphonn Concrete Products	70	237	99.9
Dwr Cymru Welsh Water	River Sirhowy	Bottom of Nine Mile Point Colliery CSO	41	218	99.5
Dwr Cymru Welsh Water	River Rhymney	TRELYN LANE CSO FLEUR-DE-LIS	33	177	74.1
Dwr Cymru Welsh Water	Nant Carn Brook	Pontywaun CSO, Newport	60	140	97.3
Dwr Cymru Welsh Water	Sirhowy River	Blackwood Oakdale Rhiw Hill CSO	72	123	99.2
Dwr Cymru Welsh Water	River Sirhowy	Old Tram Rd CSO, Pontllanfraith	55	91	99.7
Dwr Cymru Welsh Water	River Ebbw	CSO 33 REAR BRYNGWYN ROAD/HIGH ST	56	86	89.7
Dwr Cymru Welsh Water	Sirhowy River	Blackwood Cwmgelli CSO	50	82	92.1
Dwr Cymru Welsh Water	Ebbw Fawr	CRUMLIN SWFFRYD CSO CAERPHILLY	73	75	100
Dwr Cymru Welsh Water	River Rhymney	CSO Opposite Bowen Ind Estate, Aberbargoed	45	63	99.6
Dwr Cymru Welsh Water	River Rhymney	CSO at Pengham High St near Bridge	44	62	98.1
Dwr Cymru Welsh Water	River Sirhowy	CSO 16 Woodfield Row Blackwood	30	46	100
Dwr Cymru Welsh Water	Sirhowy River	WVTS-WYLLIE HALT SSO	43	46	98.7
Dwr Cymru Welsh Water	Sirhowy River	WVTS - Wattsville (Recreation Ground) CSO	34	37	96.9
Dwr Cymru Welsh Water	Sirhowy River	CSO CWM ROAD ARGOED CAERPHILLY	17	25	97.5
Dwr Cymru Welsh Water	Sirhowy River	Markham Colliery Gun Club CSO	14	23	100
Dwr Cymru Welsh Water	Nant Gwyddon Via Surface Water Sewer And A Culvert	High Street CSO, Abercarn	30	15	100
Dwr Cymru Welsh Water	River Ebbw	S/O 108 Commercial St, Risca CSO	34	12	97.5
Dwr Cymru Welsh Water	River Sirhowy	Islwyn Rd CSO, Crosskeys	14	10	62.3
Dwr Cymru Welsh Water	River Rhymney	CSO ASSET NO 90411 PENGAM	25	8	99.8
Dwr Cymru Welsh Water	River Bargoed	63 Bedwellty Rd CSO	11	2	96.7
Dwr Cymru Welsh Water	River Ebbw	WVTS - NEWBRIDGE CSO CAERPHILLY	8	2	100
Dwr Cymru Welsh Water	Ebbw Fawr River	21 Gladstone St CSO, Crosskeys	7	1	97.1
Dwr Cymru Welsh Water	River Ebbw	MALVERN TERRACE CSO	2	0	100
Dwr Cymru Welsh Water	River Sirhowy	Railway Cottages CSO, Cwmfelinfach	2	0	100
Dwr Cymru Welsh Water	River Ebbw	R/O Cobden St CSO, Crosskeys	1	0	100
Dwr Cymru Welsh Water	River Ebbw	WVTS-North Celynen Colliery CSO	1	0	99.8
Dwr Cymru Welsh Water	River Rhymney	Aberbargoed CSO	0	0	63.8
Dwr Cymru Welsh Water	Rhynys Brook	Rifleman St CSO, Risca	0	0	99.9
Dwr Cymru Welsh Water	Rhymney	Bargoed Colliery CSO	0	0	95.2
Dwr Cymru Welsh Water	River Rhymney	CSO at Hengoed Carlton Heights Nursing Home	0	0	100
Dwr Cymru Welsh Water	River Sirhowy	CSO at Hollybush - Ancient Druid	0	0	0
Dwr Cymru Welsh Water	River Rhymney	CSO at Trelyn Park	0	0	100
Dwr Cymru Welsh Water	River Rhymney	OLD PRINCE ALBERT HOTEL HENGOED	0	0	100
Dwr Cymru Welsh Water	Rhynys Brook	4 Tredegar Terrace CSO	0	0	100
Dwr Cymru Welsh Water	River Rhymney	Rear of Williams St CSO	0	0	100
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

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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Islwyn polluted by sewage 1,850 times in 2022 - lasting 9,179 hours

38 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2022

Data Sources & Accuracy

Media Queries

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