Severn Estuary polluted by sewage 129 times in 2022 - lasting 1,370 hours

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Totals for Severn Estuary in 2022
3 Sites polluted by Wessex Water
129 sewage dumps
1,370 h duration
That's 1.9 months. 2.5 times a week, on average

Pollution Summary 2022

Here are all the reported sewage overflow totals for Severn Estuary in 2022. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page - This is because there is an invalid grid reference on the pollution consent - so we don't know where the CSO is. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Wessex Water Severn Estuary AVONMOUTH STW 86 1,079 100
Wessex Water Severn Estuary THORNBURY SEWAGE TREATMENT WORKS 15 246 99.3
Wessex Water Severn Estuary BLACK NORE (NAUTICAL SCHOOL) PS 28 43 100
Wessex Water Severn Estuary CLEVEDON MARINE PARADE PUMPING STN 0 0 95
Wessex Water Severn Estuary AUST SEWAGE TREATMENT WORKS 0 0 100

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.