Top of the Poops | Place | Tŷ-Du | Polluted by Dwr Cymru Welsh Water

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Totals for Tŷ-Du in 2025

9 Sites polluted by Dwr Cymru Welsh Water

469 sewage dumps

4,781 hours duration

That's 6.64 months. On average 1.3 times a day

Change Over Time

Constituency for Tŷ-Du

Nearby Constituencies

Waterways in Tŷ-Du

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Tŷ-Du in 2025. 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 place all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s 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 Ebbw	Tanybryn Risca CSO, Pontymister	196	3,474	98.9
Dwr Cymru Welsh Water	Ebbw River	Car Park of Old Globe CSO, St John Crescent	85	691	94.2
Dwr Cymru Welsh Water	Ebbw River	CSO 47 ALCAN WORKS ROGERSTONE	46	437	98
Dwr Cymru Welsh Water	River Ebbw	S/O 108 Commercial St, Risca CSO	36	50	99.7
Dwr Cymru Welsh Water	Ebbw River	15 Tregwilym Close CSO	35	47	99.4
Dwr Cymru Welsh Water	Ebbw Fawr	Rhiwderin No 6258 in Field CSO	23	40	99.7
Dwr Cymru Welsh Water	River Ebbw	CSO 52 TT Electronics Tregwilym Ind	3	21	99.9
Dwr Cymru Welsh Water	Ebbw Fawr	Thornhill Gardens CSO, Rogerstone	19	12	99.7
Dwr Cymru Welsh Water	River Ebbw	CEDAR WOOD DRIVE CSO	26	6	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. Live sewage data from Stream Water API

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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© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

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