Aylesbury

Polluted by sewage 174 times in 2025 lasting 1,211 hours

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© Top of the Poops 2021-2024

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Live data for Aylesbury in 2026

So far this year (as of 12 Nov 2026, 05:45) there has been 1,538 hours of sewage overflows, from 20 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s

Sewage without rain in Aylesbury

On 7 occasions since December 2024, no rain fell anywhere in Aylesbury for days — and its CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s discharged anyway.

Totals for Aylesbury in 2025

10 Sites polluted by Anglian Water Thames Water
174 sewage dumps
1,211 hours duration
Sewage pollution map of Aylesbury
Sewage pollution map of Aylesbury: 174 spills in 2025, lasting 1,211 hours, by Anglian Water and Thames Water
That's 1.68 months. 3.3 times a week, on average

Change Over Time

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Aylesbury 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 constituency 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 Coombe Bottom Brook, R Ouzel PUMPING STN AT IVINGHOE ASTON STW 45 549 100
Thames Water Rowsham Brook WINGRAVE WASTEWATER TREATMENT WORKS 29 256 99.5
Thames Water River Thame AYLESBURY WWTW 13 135 100
Thames Water Groundwater Via Infilt System DAGNALL WASTEWATER TREATMENT WORKS 17 63 100
Anglian Water River Ouzel NORTHALL PUMPING STATION 12 56 100
Anglian Water Un River Ouzel MENTMORE STW 17 56 100
Anglian Water Whistle Brook, River Ouzel IVINGHOE STW 27 55 99.2
Thames Water Rowsham Brook ROWSHAM WASTEWATER TREATMENT WORKS 8 23 100
Thames Water Thame Marsworth 3 9 100
Anglian Water Wing Brook River Ouzel CUBLINGTON (WING) STW 3 4 100
Thames Water Tring Bourne WATERY LANE SPS 0 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.