Thames polluted by sewage 264 times in 2024 - lasting 2,483 hours

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Contains OS Data © Crown copyright & database right 2021-2024
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Totals for Thames in 2024
6 Sites polluted by Thames Water
264 sewage dumps
2,483 h duration
That's 3.45 months. 5.1 times a week, on average

Pollution Summary 2024

Here are all the reported sewage overflow totals for Thames in 2024. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water Thames Windsor 133 1,734 100
Thames Water Thames Cassington (New) 22 336 86
Thames Water Thames Littlemore Low Level 26 170 99.5
Thames Water Thames Acton P/S and storm 22 135 99.7
Thames Water Thames Friday Street, Henley 17 53 95
Thames Water Thames NIGHTINGALE LANE CSO 44 52 99.9
Thames Water Thames Reading, Caversham 0 0 100
Thames Water Thames Kingston Main 0 0 100
Thames Water Thames GORING STW, GORING, OXON 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, and Scottish Water

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.