Pen-y-bont ar Ogwr

Polluted by sewage 228 times in 2025 lasting 3,691 hours

Monitoring was disabled in some locations, so could be more

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Totals for Pen-y-bont ar Ogwr in 2025

6 Sites polluted by Dwr Cymru Welsh Water

228 sewage dumps

3,691 hours duration

Sewage pollution map of Pen-y-bont ar Ogwr — Sewage pollution map of Pen-y-bont ar Ogwr: 3,691 hours in 2025

That's 5.13 months. 4.4 times a week, on average

Change Over Time

Constituency for Pen-y-bont ar Ogwr

Nearby Constituencies

Waterways in Pen-y-bont ar Ogwr

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Pen-y-bont ar Ogwr 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 1 of the total 7 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year. Of these 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Ewenni	Ewenni No 2 Pumping Station	141	3,008	99.9
Dwr Cymru Welsh Water	Nant Ganna	Treoes Main SPS	30	537	99.8
Dwr Cymru Welsh Water	Ogmore Estuary	Laleston PS	38	108	96.1
Dwr Cymru Welsh Water	River Ewenny	EWENNY P.STN. NO. 1 EMERGEN	5	30	99.9
Dwr Cymru Welsh Water	Nant Cefn Glas	MILTON DRIVE CSO BRIDGEND	13	4	100
Dwr Cymru Welsh Water	River Ogmore	WILDMILL CSO WILDMILL BRIDGEND	1	2	98.7
Dwr Cymru Welsh Water	River Ogmore	PBONT NEWBRDG FLDS 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, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.

Top of the Poops

Analysing sewage pollution by the Water Industry

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Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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