Tonbridge

Polluted by sewage 220 times in 2025 lasting 1,499 hours

Monitoring fell below 50% in some locations so could be more

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Totals for Tonbridge in 2025

9 Sites polluted by Southern Water

220 sewage dumps

1,499 hours duration

Sewage pollution map of Tonbridge — Sewage pollution map of Tonbridge: 1,499 hours in 2025

That's 2.08 months. 4.2 times a week, on average

Change Over Time

Constituency for Tonbridge

Nearby Constituencies

Waterways in Tonbridge

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Tonbridge 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 1 of the total 9 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Southern Water	Somerhill Stream	PRIORY MILL TONBRIDGE WPS	53	611	92.9
Southern Water	Botany Stream	TONBRIDGE WWTW	19	201	100
Southern Water	River Medway	CANNON LANE COMBINED SEWER OVERFLOW	40	194	100
Southern Water	River Medway	FIVE OAK GREEN ROAD TUDELEY CEO	36	190	99.6
Southern Water	Botany Stream	PRIORY ROAD TONBRIDGE O/S 86 CSO	30	86	97.6
Southern Water	River Medway	HILDEN PARK PUMPING STATION	19	73	100
Southern Water	Mill Stream	MILL STREAM, TONBRIDGE CSO	12	63	100
Southern Water	Hilden Brook	HILDEN BRIDGE PUMPING STATION	7	61	100
Southern Water	Hilden Brook	HAWDEN ROAD TONBRIDGE CSO	4	16	18.9

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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