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.

Totals for Didcot and Wantage in 2025

Sewage4,979 hours
Monitoring offline1,602 hours
Potential pollution295 hours
Storm overflows20

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