Canterbury

Polluted by sewage 196 times in 2024 lasting 1,099 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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✔ means we have experimental daily data since 2023

Live data for Canterbury in 2025

So far this year (as of May 28, 2025, 5:15 PM) there has been 214 hours of sewage overflows

Totals for Canterbury in 2024

7 Sites polluted by Southern Water

196 sewage dumps

1,099 hours duration

That's 1.53 months. 3.8 times a week, on average

Change Over Time

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Constituencies near Canterbury

Waterways in Canterbury

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Canterbury, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online

Monitoring Offline

Polluting

Potentially Polluting

Unknown

Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Canterbury in 2024. 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 constituency all the declared CSOs appeared to have monitoring enabled for more than 50% of the year

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Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Southern Water	North Sea	SWALECLIFFE WWTW	76	700	99.7
Southern Water	River Great Stour	CANTERBURY WASTEWATER TREATMENT WKS	20	202	99.8
Southern Water	Tankerton Bay	GORRELL OUTFALL VIA DIAMOND RD CSO	23	86	100
Southern Water	Great Stour	WINCHEAP CANTERBURY CSO	17	45	99.7
Southern Water	Great Stour	HOSPITAL FARM HARBLEDOWN CEO	17	34	100
Southern Water	Controlled Sea	TANKERTON BAY OUTFALL	42	24	99.93
Southern Water	Freshwater River	CHESTFIELD STORM TANKS	1	4	99.9
Southern Water	Freshwater River	BROOK ROAD WASTEWATER PUMPING	0	0	99.8
Southern Water	Great Stour River	KINGSMEAD ROAD CANTERBURY CSO	0	0	99.7

Showing 1 to 9 of 9 entries

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.

Analysing sewage pollution by the Water Industry

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Canterbury Polluted by sewage 196 times in 2024 lasting 1,099 hours

Canterbury