Area of Outstanding Natural Beauty

Isle Of Wight

Polluted by sewage 642 times in 2025 - lasting 4,342 hours

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

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Totals for Isle Of Wight in 2025

31 Sites polluted by Southern Water
642 sewage dumps
4,342 hours duration
Sewage pollution map of Isle Of Wight
Sewage pollution map of Isle Of Wight, showing 642 overflows in 2025
That's 6.03 months. On average 1.8 times a day

How does Isle Of Wight compare?

Isle Of Wight was the #18 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 Isle Of Wight 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 Isle Of Wight 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 %
Southern Water Brighstone Stream BRIGHSTONE WWTW 48 692 100
Southern Water Solent COWES (SPRINGHILL) HEADWORKS WPS 60 615 100
Southern Water Shorwell Stream SHORWELL WWTW 42 440 99.7
Southern Water Solent BARGE LANE WOOTTON BRIDGE 5 CSO 46 358 46.2
Southern Water Rodge Brook PORCHFIELD MAIN ROAD PS CSO 37 342 99.9
Southern Water Caul Bourne CALBOURNE WWTW 34 280 100
Southern Water River Medina CHALE WWTW 29 231 99.9
Southern Water Western Yar BOW BRIDGE COMBINED SEWER OVERFLOW 34 185 99.6
Southern Water Solent NORTON WPS CSO 14 169 99.9
Southern Water Solent NORTON HEADWORKS WPS 50 169 99.9
Southern Water Solent FISHBOURNE WEIR CSO 28 144 77
Southern Water Wootton Creek NEW ROAD WOOTTON CEO 38 133 100
Southern Water Western Yar SCHOOL GREEN ROAD FRESHWATER CEO 31 115 99.9
Southern Water Drain To Western Yar FRESHWATER BAY PS 15 84 100
Southern Water Wootton Creek FISHBOURNE LANE FISHBOURNE IOW CEO 18 74 100
Southern Water Binstead Stream LADIES WALK BINSTEAD CEO 14 58 99.7
Southern Water Wootton Creek MILL SQUARE WOOTTON CSO 23 45 100
Southern Water Freshwater River THORELY ROAD BOULDNER CEO 13 42 99.9
Southern Water Yar Estuary KINGS MANOR CEO 9 29 100
Southern Water Solent YARMOUTH PS 12 27 99.9
Southern Water Eastern Yar LANGBRIDGE PS 7 26 99.9
Southern Water Blackbridge Brook HAVENSTREET PS 6 20 100
Southern Water Solent TURVILLS FIELD PS/THE PIER PS 6 19 100
Southern Water Solent NORTON HEADWORKS WPS 9 19 99.9
Southern Water Unnamed Stream CHALE PS 1 3 99.9
Southern Water Western Yar Estuary MILL ROAD / TENNYSON ROAD CAR PARK 5 2 100
Southern Water Sandown Bay LUCCOMBE CEO 5 2 100
Southern Water Shorwell Stream SHORWELL WWTW 1 2 99.6
Southern Water Unnamed Stream LINSTONE DRIVE CSO 4 2 100
Southern Water Newtown River MILL LANE SHALFLEET WPS 1 1 99.9
Southern Water Freshwater River BLACKGANG PS 2 1 99.9

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.