Thames polluted by sewage 159 times in 2023 - lasting 1,194 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
Totals for Thames in 2023
7 Sites polluted by Thames Water
159 sewage dumps
1,194 h duration
That's 1.66 months. 3.1 times a week, on average

Pollution Summary 2023

Here are all the reported sewage overflow totals for Thames in 2023. 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 87 993 99.6
Thames Water Thames Acton P/S and storm 20 129 99.4
Thames Water Thames NIGHTINGALE LANE CSO 30 26 69.5
Thames Water Thames Littlemore Low Level 5 17 99.5
Thames Water Thames Cassington (New) 2 14 99.1
Thames Water Thames Friday Street, Henley 14 11 87.8
Thames Water Thames Kingston Main 1 1 99.4
Thames Water Thames Church Manorway 0 0 0
Thames Water Thames Crabtree Manorway 0 0 0
Thames Water Thames Reading, Caversham 0 0 98.7
Thames Water Thames Lower Cookham Rd Car Park 0 0 0
Thames Water Thames CASTLE EATON 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. 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.