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

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✔ means we have experimental daily data since 2023

Totals for Cardiff North in 2024

9 Sites polluted by Dwr Cymru Welsh Water

461 sewage dumps

3,432 hours duration

That's 4.77 months. On average 1.3 times a day

Change Over Time

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Constituencies near Cardiff North

Waterways in Cardiff North

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Cardiff North 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 Taff	Tongwynlais CSO	121	1,936	89.2
Dwr Cymru Welsh Water	River Rhymney	Storm Water Overflow at Began, St Mellons	155	948	94.7
Dwr Cymru Welsh Water	River Taff	Ynys Bridge CSO	43	362	98.7
Dwr Cymru Welsh Water	Rhydwaedlyd Brook	Caedelyn Park Boundary CSO	49	67	99.1
Dwr Cymru Welsh Water	Nant-Y-Wedal	HEATHWOOD ROAD CSO, HEATHWOOD JUNCTION	46	55	98.5
Dwr Cymru Welsh Water	Rhymney River	Began Road CSO	7	36	98.3
Dwr Cymru Welsh Water	Taff	Bottom of Westbourne Crescent CSO, Cardiff	29	13	97.9
Dwr Cymru Welsh Water	River Taff Via Culverted Watercourse	ABERPORTH RD CSO	10	12	56
Dwr Cymru Welsh Water	River Rhymney	CSO at Bridge Road, St Mellons, Cardiff	1	1	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. 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 North Polluted by sewage 461 times in 2024 lasting 3,432 hours

Cardiff North