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Didcot and Wantage - 2025 Sewage

Polluted by sewage 4,979 hours in 2025 , monitoring offline 1,602 hours , potential overflows 295 hours

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

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Didcot and Wantage for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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.

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Constituencies near Didcot and Wantage

Daily Data

Jan - 1,663 hours , 99 potential
Feb - 1,197 hours
Mar - 746 hours , 311 offline
Apr - 449 hours , 8 offline
May - 18 hours , 112 potential
Jun - 0 hours , 83 potential
Jul - 0 hours , 151 offline
Aug - 1 hours
Sept - 35 hours
Oct - 0 hours
Nov - 187 hours
Dec - 681 hours
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Thames Water South Moreton STW Mill Brook 125 2,594 h 45m 1,282 h
Thames Water Drayton STW Ginge Brook 31 424 h 45m -
Thames Water Uffington STW Uffington Brook 26 374 h 45m -
Thames Water Culham STW Clifton Hampden Ditch 31 307 h 15m -
Thames Water Didcot STW Moor Ditch 18 279 h 15m -
Thames Water Uffington STW Uffington Brook 16 274 h -
Thames Water Drayton STW Ginge Brook 16 215 h -
Thames Water Wantage STW Letcombe Brook 23 130 h 30m -
Thames Water Abingdon STW Odhay Hill Ditch/River Thames 12 109 h 30m 259 h
Thames Water Culham STW Clifton Hampden Ditch 8 70 h 15m -
Thames Water Cholsey STW Cholsey Brook 8 61 h 45m 99 h
Thames Water Didcot STW Moor Ditch 5 60 h 45m -
Thames Water Wantage STW Letcombe Brook 6 35 h 15m -
Thames Water South Moreton STW Mill Brook 6 19 h -
Thames Water Abingdon STW Odhay Hill Ditch/River Thames 2 10 h -
Thames Water Heyford Hill Lane (Littlemore) SPS Thames 2 6 h 30m -
Thames Water Stanford in the Vale STW River Ock 3 6 h 15m 256 h
Thames Water Heyford Hill Lane (Littlemore) SPS Thames 0 0 h -
Thames Water Stanford in the Vale STW River Ock 0 0 h -
Thames Water Cholsey STW Cholsey Brook 0 0 h -

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

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.

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Analysing sewage pollution by the Water Industry

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© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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