Northfleet

Polluted by sewage 59 times in 2025 lasting 53 hours

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Totals for Northfleet in 2025

9 Sites polluted by Southern Water
59 sewage dumps
53 hours duration
Sewage pollution map of Northfleet
Sewage pollution map of Northfleet: 53 hours in 2025
That's 2.21 days. 1.1 times a week, on average

Change Over Time

Constituency for Northfleet

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Northfleet 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 %
Southern Water Tidal River Thames SINGLEWELL ROAD GRAVESEND 123 CSO 3 22 60.9
Southern Water Tidal River Thames OLD ROAD WEST GRAVESEND CSO 16 10 100
Southern Water Tidal River Thames NORTHFLEET WWTW 2 6 99.9
Southern Water Thames Estuary CRAWLEY COURT GRAVESEND CSO 11 5 100
Southern Water River Thames - Tidal CROSS LANE EAST CSO 9 2 55.5
Southern Water Tidal River Thames CROSS LANE WEST GRAVESEND CSO 8 1 68.5
Southern Water River Thames MANOR WAY SWANSCOMBE CEO 1 1 100
Southern Water River Thames Estuary HIGH ST GRAVESEND OUTSIDE 70 CSO 8 1 82.3
Southern Water Tidal River Thames COBHAM STREET GRAVESEND CSO 1 1 66.8
Southern Water Thames Estuary TOWN PIER, GRAVESEND CSO 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.