Reading West and Mid Berkshire - Live Sewage

Polluted by sewage 5,806 hours in 2026 , monitoring offline 1,383 hours so far..

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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 live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Reading West and Mid Berkshire so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Totals for Reading West and Mid Berkshire in 2026

Sewage5,806 hours
Monitoring offline1,383 hours
Potential pollution0 hours
Storm overflows20

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Daily Data

Jan - 1,914 hours , 300 offline
Feb - 2,636 hours , 63 offline
Mar - 1,076 hours
Apr - 177 hours
May - 0 hours
Jun - 0 hours
Jul - 0 hours , 423 offline
Aug - 1 hours , 470 offline
Sept - 0 hours
Oct - 0 hours , 126 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Thames Water Mortimer STW Foudry Brook 52 1,152h 45m 63 h
Thames Water Burghfield STW Clay Hill Brook 50 1,074h 45m -
Thames Water Compton STW River Pang 36 728h 30m 893 h
Thames Water Chapel Row STW River Bourne 41 717h 63 h
Thames Water Pangbourne STW River Sul 32 707h 42m -
Thames Water Aldermaston STW Groundwater Via Land Treatment 46 692h 30m -
Thames Water Briff Lane (Bucklebury) STW Briff Lane Stream 26 295h 45m 363 h
Thames Water Hampstead Norreys STW River Pang 17 198h 45m -
Thames Water Beenham STW Webbs Lane Stream 17 172h 45m -
Thames Water Midgham STW Kennet 10 66h 30m -
Thames Water Beenham STW Webbs Lane Stream 0 0h -
Thames Water Mortimer STW Foudry Brook 0 0h -
Thames Water Briff Lane (Bucklebury) STW Briff Lane Stream 0 0h -
Thames Water Midgham STW Kennet 0 0h -
Thames Water Pangbourne STW River Sul 0 0h -
Thames Water Burghfield STW Clay Hill Brook 0 0h -
Thames Water Aldermaston STW Groundwater Via Land Treatment 0 0h -
Thames Water Hampstead Norreys STW River Pang 0 0h -
Thames Water Compton STW River Pang 0 0h -
Thames Water Chapel Row STW River Bourne 0 0h -

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.