Porthcawl

Polluted by sewage 38 times in 2025 lasting 29 hours

Monitoring fell below 50% in some locations so could be more

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Totals for Porthcawl in 2025

4 Sites polluted by Dwr Cymru Welsh Water
38 sewage dumps
29 hours duration
Sewage pollution map of Porthcawl
Sewage pollution map of Porthcawl: 29 hours in 2025
That's 1.21 days. 3.2 times a month, over the year

Change Over Time

Constituency for Porthcawl

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Porthcawl 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 5 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.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Bristol Channel BEACH ROAD CSO PORTHCAWL 9 8 99.9
Dwr Cymru Welsh Water Bristol Channel WINDSOR RAOD CSO PORTCAWL 18 8 99.6
Dwr Cymru Welsh Water Bristol Channel At Irongate Pt IRONGATE PS PORTCAWL BRIDGEND 4 6 99.9
Dwr Cymru Welsh Water Bristol Channel Via Newton Pt BEACH ROAD PUMPING STATION NEWTON 7 5 99.9
Dwr Cymru Welsh Water Estuarial Waters Of River Severn Porthcawl Sanderling Close No 7 0 0 46.4

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. 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.