Greenwich

Polluted by sewage 69 times in 2025 lasting 143 hours

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Totals for Greenwich in 2025

7 Sites polluted by Thames Water

69 sewage dumps

143 hours duration

Sewage pollution map of Greenwich — Sewage pollution map of Greenwich: 143 hours in 2025

That's 5.96 days. 1.3 times a week, on average

Change Over Time

Constituency for Greenwich

Nearby Constituencies

Waterways in Greenwich

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Greenwich 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 all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Thames Water	Freshwater River	MAIN ROAD	33	62	100
Thames Water	River Thames	DEPTFORD STORM RELIEF, LONDON	3	46	99.8
Thames Water	River Thames	GREENWICH PS, GREENWICH, LONDON	4	26	99.8
Thames Water	River Thames	EARL PS STORM OUTLET, LONDON	2	4	100
Thames Water	Ravensbourne/Deptford Creek	Deptford Creek Storm	2	3	81.1
Thames Water	River Thames	ISLE OF DOGS PUMPING STATION CSO	24	0	100
Thames Water	Woolwich Reach	HENLEY ROAD CSO	1	0	100
Thames Water	River Thames	CHARLTON STORM RELIEF, LONDON	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. 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.

Top of the Poops

Analysing sewage pollution by the Water Industry

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© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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