Reading West and Mid Berkshire was polluted by sewage 626 times in 2024
lasting 8,954 hours - that's 1.04 years!

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
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✔ means we have experimental daily data since 2023
Live data for Reading West and Mid Berkshire in 2025
So far this year (as of Apr 16, 2025, 5:30 PM) there has been 3,660 hours of sewage overflows - that's 0.42 years!
Totals for Reading West and Mid Berkshire in 2024
10 Sites polluted by Thames Water
626 sewage dumps
8,954 h duration
That's 1.04 years! On average 1.7 times a day
Change Over Time
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Daily Data
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Reading West and Mid Berkshire, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Reading West and Mid Berkshire in 2024. 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 0 of the total 11 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water River Bourne CHAPEL ROW (BERKS) WWTW 112 1,979 99.8
Thames Water Clay Hill Brook BURGHFIELD STW, BURGHFIELD, BERKS 96 1,639 100
Thames Water Sulham Brook PANGBOURNE WWTW 70 1,291 100
Thames Water River Pang COMPTON SEWAGE TREATMENT WORKS 52 1,017 90.9
Thames Water Briff Lane Stream Bucklebury 73 833 99.6
Thames Water Foudry Brook MORTIMER (STRAFIELD MORTIMER) STW 63 673 100
Thames Water River Pang HAMPSTEAD NORREYS STW, BERKS 55 597 98.6
Thames Water Webbs Lane Stream BEENHAM STW, BEENHAM, BERKS 54 486 100
Thames Water Groundwater Via Land Treatment ALDERMASTON WWTW 48 418 100
Thames Water Kennet MIDGHAM SEWAGE TREATMENT WORKS 3 17 95.8
Thames Water Thames GORING STW, GORING, OXON 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. This 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.