Sywell and Overstone

Polluted by sewage 21 times in 2025 lasting 75 hours

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Totals for Sywell and Overstone in 2025

1 Sites polluted by Anglian Water
21 sewage dumps
75 hours duration
Sewage pollution map of Sywell and Overstone
Sewage pollution map of Sywell and Overstone: 75 hours in 2025
That's 3.12 days. 1.8 times a month, over the year

Change Over Time

Constituency for Sywell and Overstone

Waterways in Sywell and Overstone

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Sywell and Overstone 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 %
Anglian Water Sywell Reservoir SYWELL PS 21 75 89.3

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. 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.