Area of Outstanding Natural Beauty

Suffolk Coast & Heaths

Polluted by sewage 141 times in 2025 - lasting 272 hours

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Totals for Suffolk Coast & Heaths in 2025

13 Sites polluted by Anglian Water
141 sewage dumps
272 hours duration
Sewage pollution map of Suffolk Coast & Heaths
Sewage pollution map of Suffolk Coast & Heaths, showing 141 overflows in 2025
That's 1.62 weeks. 2.7 times a week, on average

How does Suffolk Coast & Heaths compare?

Suffolk Coast & Heaths was the #35 most polluted Area of Outstanding Natural Beauty in England & Wales, by duration of sewage overflows, as reported by the water companies

Why the change?

Storm overflows spill when it rains, and 2025 was drier than 2024 - 90% of average annual rainfall against 105%.

So much of any drop is weather, not fixed pipes. The live page shows rainfall and sewage side by side, day by day.

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Suffolk Coast & Heaths in 2025.

How we count, and how accurate it is

A CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway counts towards Suffolk Coast & Heaths when it sits inside the designated area, or within 200 metres of its boundary. An overflow close to two AONBs is counted in both.

We use data from the water companies, but we are seeing many anomalies that make us believe that location information is quite poor. The situation is likely far worse than reported here.

Other CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s just outside the 200 metre boundary are not counted, though they may still affect water quality inside the area.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Anglian Water River Deben WOODBRIDGE QUAYSIDE TPS 18 97 99.9
Anglian Water Holbrook Stream HOLBROOK STW 28 62 99.8
Anglian Water Tidal River Blyth SOUTHWOLD WRC 25 38 100
Anglian Water River Deben WOODBRIDGE STATION ROAD CSO 7 24 100
Anglian Water River Orwell WOOLVERSTONE - MARINA TPS 9 24 100
Anglian Water Tidal River Stour HARWICH AND DOVERCOURT WRC 4 10 100
Anglian Water River Deben Tidal WOODBRIDGE DEBEN ROAD CSO 17 7 100
Anglian Water River Orwell T SHOTLEY STW 4 2 100
Anglian Water Tidal River Stour HARWICH AND DOVERCOURT WRC 6 2 99.9
Anglian Water River Fynn MARTLESHAM BRIDGE PUMPING STATION 6 1 100
Anglian Water Buss Creek SOUTHWOLD MARLBOROUGH RD CSO 13 0 96.9
Anglian Water Martlesham Creek WOODBRIDGE WATER RECYCLING CENTRE 3 0 100
Anglian Water Buss Creek SOUTHWOLD STATION ROAD PS 1 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.