Area of Outstanding Natural Beauty

Norfolk Coast

Polluted by sewage 163 times in 2025 - lasting 483 hours

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Totals for Norfolk Coast in 2025

10 Sites polluted by Anglian Water
163 sewage dumps
483 hours duration
Sewage pollution map of Norfolk Coast
Sewage pollution map of Norfolk Coast, showing 163 overflows in 2025
That's 2.88 weeks. 3.1 times a week, on average

How does Norfolk Coast compare?

Norfolk Coast was the #33 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 Norfolk Coast 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 Norfolk Coast 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 North Sea CROMER WATER RECYCLING CENTRE 72 272 100
Anglian Water North Sea MUNDESLEY-KNAPTON ROAD WRC 56 176 100
Anglian Water River Hun HUNSTANTON SMUGGLERS LANE PS 14 16 100
Anglian Water River Stiffkey LANGHAM WRC (AKA BINHAM WRC) 2 5 100
Anglian Water Wells Creek WELLS-NEXT-THE-SEA STW 2 4 100
Anglian Water Mundesley Beck GIMINGHAM - NR. MILL TPS 8 3 98.9
Anglian Water River Glaven HOLT MAIN ROAD WRC 4 2 100
Anglian Water Boathouse Creek DERSINGHAM M'BATTON RD PS(F) 1 2 96.3
Anglian Water Unnamed Marsh Dyke North Sea WELLS - FREEMAN ST CSO 3 1 99.9
Anglian Water River Burn BURNHAM MARKET WATER RECYCLING CTR 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.