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

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Constituency

✔ means we have experimental daily data since 2023

Totals for Caerphilly in 2023

37 Sites polluted by Dwr Cymru Welsh Water

1,880 sewage dumps
10,722 h duration

That's 1.24 years! On average 5.2 times a day

Change Over Time

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Your local MP is Chris Evans (Labour/Co-operative) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near Caerphilly

Waterways in Caerphilly

Pollution Summary 2023

Here are all the reported sewage overflow totals for Caerphilly 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 1 of the total 42 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Porset Brook	CSO at Lansbury Park Estate	183	2,557	98.2
Dwr Cymru Welsh Water	Sirhowy River	CSO 20 OLD MILL NEWPORT ROAD	141	1,404	99.8
Dwr Cymru Welsh Water	River Rhymney	CWM LAS CSO	98	1,107	99
Dwr Cymru Welsh Water	River Rhymney	CSO at Glan-yr-Afon Nursing Home No2, Pengam	121	1,080	98.8
Dwr Cymru Welsh Water	River Rhymney	Tredomen AFC CSO, Ystrad Mynach	95	1,045	100
Dwr Cymru Welsh Water	River Sirhowy	Springfield Est CSO, Pontllanfraith	119	574	97.9
Dwr Cymru Welsh Water	Nant Y Aber	Combined Sewer Overflow at Bryn Siriol	101	355	95.9
Dwr Cymru Welsh Water	River Sirhowy	Bottom of Nine Mile Point Colliery CSO	49	324	95.7
Dwr Cymru Welsh Water	River Rhymney	CSO at Glan-yr-Afon Nursing Home 1	101	245	99.3
Dwr Cymru Welsh Water	Nant Yr Aber	Graig-Y-Fedw CSO	55	239	96.8
Dwr Cymru Welsh Water	River Rymney	MAESYCWMMER A472 JUNCTION CSO	83	203	99.4
Dwr Cymru Welsh Water	Nant Caeach	Combined Sewer Overflow at Rear of 33 Church Street	14	183	99.9
Dwr Cymru Welsh Water	River Rhymney	Tir-y-Berth behind William St	67	164	99.3
Dwr Cymru Welsh Water	River Rhymney	Forge Engineering CSO, Bedwas	48	154	96.8
Dwr Cymru Welsh Water	River Rhymney	TRELYN LANE CSO FLEUR-DE-LIS	17	140	9.9
Dwr Cymru Welsh Water	Sirhowy River	WVTS - Wattsville (Recreation Ground) CSO	55	129	98.6
Dwr Cymru Welsh Water	River Sirhowy	Old Tram Rd CSO, Pontllanfraith	59	113	99.7
Dwr Cymru Welsh Water	Sirhowy River	CSO 19 Gryphonn Concrete Products	80	111	99.9
Dwr Cymru Welsh Water	Nant Cylla	Oaks End Close CSO	49	99	99.7
Dwr Cymru Welsh Water	River Rhymney	A CSO AT YSTRAD MYNACH BRIDGE	74	96	98.5
Dwr Cymru Welsh Water	Sirhowy River	WVTS-WYLLIE HALT SSO	39	94	98.6
Dwr Cymru Welsh Water	River Rhymney	CSO at Pengham High St near Bridge	42	73	98.3
Dwr Cymru Welsh Water	Nant Yr Aber	Crossways Retail Park CSO	22	58	99.4
Dwr Cymru Welsh Water	Nant Yr Aber	CSO Rear Commerc'l St Senghenydd	31	39	100
Dwr Cymru Welsh Water	River Rhymney	Newport Rd CSO, Trethomas	20	39	99.2
Dwr Cymru Welsh Water	River Rhymney	CSO ASSET NO 90411 PENGAM	35	21	99.7
Dwr Cymru Welsh Water	River Rhymney	High St CSO, Glan-y-Nant	13	19	99.9
Dwr Cymru Welsh Water	River Rhymney	Forge Rd CSO, Machen	19	16	99.7
Dwr Cymru Welsh Water	River Rhymney	Asset No. 32207 Celtic Steel Factory CSO	24	13	99.7
Dwr Cymru Welsh Water	Nant Cwm-Parc	64 Commercial Streetreet CSO, Senghenydd	11	7	99
Dwr Cymru Welsh Water	Nant Yr Aber	Windsor Place Senghenydd CSO	4	7	100
Dwr Cymru Welsh Water	River Sirhowy	Islwyn Rd CSO, Crosskeys	6	1	94.9
Dwr Cymru Welsh Water	Nant-Yr-Aber	86 Nantgarw Rd CSO	1	0	32.7
Dwr Cymru Welsh Water	River Rhymney	Rear of Williams St CSO	1	0	100
Dwr Cymru Welsh Water	Nant Yr Aber	Abertridwr Coed Cae Road 1 CSO	1	0	100
Dwr Cymru Welsh Water	Rhymney R - Nant Bargod Rhymni To Conf Nant Cyl	Fleur-de-Lys - Rear of Glanddu CSO	1	0	99.9
Dwr Cymru Welsh Water	River Rhymney	CSO at Trelyn Park	1	0	99.9
Dwr Cymru Welsh Water	River Sirhowy	Railway Cottages CSO, Cwmfelinfach	0	0	100
Dwr Cymru Welsh Water	Rhymney River	Old Prince Albert Hotel CSO, Hengoed	0	0	100
Dwr Cymru Welsh Water	River Rhymney	OLD PRINCE ALBERT HOTEL HENGOED	0	0	100
Dwr Cymru Welsh Water	River Rhymney	BEDWAS SUNNYBANK FARM CSO	0	0	0
Dwr Cymru Welsh Water	River Rhymney	COMBINED SEWER OVERFLOW SERVING	0	0	100

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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Caerphilly was polluted by sewage 1,880 times in 2023 lasting 10,722 hours - that's 1.24 years! - but monitoring was disabled in some locations, so could be more

37 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2023

Data Sources & Accuracy

Media Queries

Please Support Us

Caerphilly was polluted by sewage 1,880 times in 2023
lasting 10,722 hours - that's 1.24 years!
- but monitoring was disabled in some locations, so could be more