Henley and Thame - Live Sewage

Polluted by sewage 4,556 hours in 2026 , monitoring offline 769 hours so far..

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

Which Year?

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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 Henley and Thame 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 Henley and Thame in 2026

Sewage4,556 hours
Monitoring offline769 hours
Potential pollution0 hours
Storm overflows29

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Daily Data

Jan - 1,398 hours
Feb - 2,947 hours , 323 offline
Mar - 143 hours
Apr - 1 hours
May - 0 hours
Jun - 0 hours
Jul - 0 hours
Aug - 5 hours
Sept - 0 hours , 386 offline
Oct - 59 hours , 59 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Thames Water Little Milton STW Gainsbridge Brook 55 1,188h 45m -
Thames Water Thame STW Lashlake Stream 49 913h 45m -
Thames Water Chinnor STW Henton Stream 52 802h 32m -
Thames Water Benson STW Howbery Ditch 30 660h 50m -
Thames Water Wheatley STW Wheatley Ditch 47 447h 15m -
Thames Water Watlington STW Pyrton Stream 48 445h 45m -
Thames Water Chalgrove STW Warpsgrave Ditch 10 51h 15m -
Thames Water Manor Farm Road (Sydenham) SPS Sydenham Stream 3 18h 15m 59 h
Thames Water Beckley STW Otmoor Lane Ditch 2 13h 30m -
Thames Water Tetsworth STW Latchford Brook 9 11h 30m -
Thames Water Forest Hill STW Polecat End Ditch 2 2h -
Thames Water Friday Street (Henley) SPS Thames 2 1h 22m 386 h
Thames Water Sonning Common STW Into Land 0 0h -
Thames Water Thame STW Lashlake Stream 0 0h -
Thames Water Caversham (Reading) SPS Thames 0 0h 323 h
Thames Water Tetsworth STW Latchford Brook 0 0h -
Thames Water Benson STW Howbery Ditch 0 0h -
Thames Water Friday Street (Henley) SPS Thames 0 0h -
Thames Water Little Milton STW Gainsbridge Brook 0 0h -
Thames Water Dorchester STW Thame 0 0h -
Thames Water Wheatley STW Wheatley Ditch 0 0h -
Thames Water Chinnor STW Henton Stream 0 0h -
Thames Water Watlington STW Pyrton Stream 0 0h -
Thames Water Forest Hill STW Polecat End Ditch 0 0h -
Thames Water Chalgrove STW Warpsgrave Ditch 0 0h -
Thames Water Dorchester STW Thame 0 0h -
Thames Water Caversham (Reading) SPS Thames 0 0h -
Thames Water Sonning Common STW Into Land 0 0h -
Thames Water Beckley STW Otmoor Lane Ditch 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.