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River Garnant polluted by sewage 312 times in 2025 - lasting 3,166 hours

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Totals for River Garnant in 2025
3 Sites polluted by Dwr Cymru Welsh Water
312 sewage dumps
3,166 h duration
That's 4.4 months. 6 times a week, on average
Constituencies along River Garnant
Places along River Garnant

Pollution Summary 2025

Here are all the reported sewage overflow totals for River Garnant in 2025. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Garnant GCG - D/S of Graig Road CSO 158 1,990 98.1
Dwr Cymru Welsh Water River Garnant CSO 27 BOUNDARY RD BRIDGE GARNANT 79 705 99.9
Dwr Cymru Welsh Water River Garnant CSO 26 QUARRY PLACE AMMONFORD 75 471 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. 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.