Chatham and Aylesford was polluted by sewage 148 times in 2024
lasting 346 hours

Constituency

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✔ means we have experimental daily data since 2023

Live data for Chatham and Aylesford in 2025

So far this year (as of Apr 16, 2025, 5:45 PM) there has been 682 hours of sewage overflows

Totals for Chatham and Aylesford in 2024

15 Sites polluted by Southern Water

148 sewage dumps
346 h duration

That's 14.42 days. 2.8 times a week, on average

Change Over Time

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Constituencies near Chatham and Aylesford

Waterways in Chatham and Aylesford

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Chatham and Aylesford, 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.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Chatham and Aylesford 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 0 of the total 19 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Southern Water	River Medway Estuary	HAM HILL S.T.W.	22	189	100
Southern Water	Tidal Estuary Of River Medway	CONSTITUTION HILL CHATHAM CSO	32	76	77.5
Southern Water	River Medway Estuary	SECOND AVENUE NO 3 CHATHAM CSO	18	41	74.7
Southern Water	River Medway Estuary	MAGPIE HALL ROAD CHATHAM OUTSIDE 33	38	19	83.8
Southern Water	River Medway Estuary	SECOND AVENUE NO 2 CSO	16	12	40.2
Southern Water	River Medway Estuary	RECTORY CLOSE WOULDHAM WWPS	3	2	100
Southern Water	River Medway	RIDGEWAY BANKS CHATHAM CSO	7	1	100
Southern Water	River Medway	CONCORD AVENUE CHATHAM CSO	2	0	26.7
Southern Water	River Medway Estuary	SECOND AVE CHATHAM NO1 CSO	2	0	99.9
Southern Water	River Medway Estuary	STURLA ROAD CHATHAM CSO	1	0	33.1
Southern Water	River Medway	MAIDA ROAD CHATHAM CSO	3	0	22.7
Southern Water	River Medway Estuary	ORDNANCE TERRACE CHATHAM CSO	1	0	90.3
Southern Water	River Medway Estuary	MELBOURNE ROAD CHATHAM CSO	1	0	100
Southern Water	Medway Estuary	GROVE ROAD CHATHAM OUTSIDE 1 CSO	1	0	70.8
Southern Water	River Medway Estuary	GROVE ROAD CHATHAM O/S 77 CSO	1	0	100
Southern Water	River Medway Estuary	WALDERSLADE ROAD CHATHAM 149 CSO	0	0	2.3
Southern Water	River Medway Estuary	MAGPIE HALL ROAD OUTSIDE 60 CSO	0	0	55.7
Southern Water	River Medway Estuary	CSO HOPWELL DRIVE (CHATHAM)	0	0	94.8
Southern Water	River Medway Estuary	CHATHAM HILL CHATHAM OUTSIDE 10 CSO	0	0	9.3

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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