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

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✔ means we have experimental daily data since 2023

Totals for Cardiff West in 2024

17 Sites polluted by Dwr Cymru Welsh Water

792 sewage dumps

7,779 hours duration

That's 10.8 months. On average 2.2 times a day

Change Over Time

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Cardiff West in 2024. 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 all the declared CSOs appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Clun	RHIWSAESON STW RHIWSAESON LLANTRI Settled Storm	168	1,874	69
Dwr Cymru Welsh Water	River Elai	St Fagans STW	120	1,548	99.8
Dwr Cymru Welsh Water	Nant Glaswg	Creigiau Sewage Treatment Works Hoel Settled Storm	68	1,239	99.8
Dwr Cymru Welsh Water	Nant Coslech	Groesfan SPS	88	785	99.8
Dwr Cymru Welsh Water	Unknown	St Fagans STW	55	680	99.8
Dwr Cymru Welsh Water	Nant Glaswg	CREIGIAU SEWAGE TREATMENT WORKS HOE	42	639	99.8
Dwr Cymru Welsh Water	Nant Dowlais	RHYDLAFAR STW ST FAGANS CARDIFF	114	589	99.8
Dwr Cymru Welsh Water	River Ely	CSO at TRELAI PARK STORM SEWAGE PS	58	177	99.8
Dwr Cymru Welsh Water	River Ely	Miskin Sewage Pumping Station Miskin	28	166	99.7
Dwr Cymru Welsh Water	River Ely	Brynsadler Pumping Station Clun Ely	14	65	99.8
Dwr Cymru Welsh Water	River Ely	Danybryn SPS	11	5	99.8
Dwr Cymru Welsh Water	River Ely	Ely Mill Rd/Muston Rd CSO, Cardiff	18	5	99.7
Dwr Cymru Welsh Water	River Ely	YNYSDDU PUMPING STATION PONTYCLUN	2	2	99.8
Dwr Cymru Welsh Water	River Ely	CSO at Cardiff Ely Plymouth Rd No 108	3	0	98.6
Dwr Cymru Welsh Water	River Ely	MAES YR FELIN PUMPING STATION	1	0	99.8
Dwr Cymru Welsh Water	River Ely	Fairview SPS	1	0	99.4
Dwr Cymru Welsh Water	River Ely	RHYDYNANT PS (ADJ TO 49) PONTYCLUN	1	0	99.8

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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(C) 2020-2024 Top-Of-The-Poops CC-BY-SA 4.0,
(C) Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2024,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis (C) 2024 Top-Of-The-Poops

Cardiff West Polluted by sewage 792 times in 2024 lasting 7,779 hours

Cardiff West