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Swindon North - 2025 Sewage

Polluted by sewage 2,971 hours in 2025 , monitoring offline 2,096 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 Swindon North 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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Daily Data

Jan - 546 hours
Feb - 622 hours
Mar - 36 hours , 61 offline
Apr - 0 hours
May - 0 hours , 652 offline
Jun - 9 hours , 851 offline
Jul - 8 hours , 89 offline
Aug - 0 hours , 385 offline
Sept - 0 hours , 56 offline
Oct - 5 hours
Nov - 643 hours
Dec - 1,075 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Thames Water Sevenhampton STW River Cole 78 1,622h 45m -
Thames Water Sevenhampton STW River Cole 43 935h 30m -
Thames Water Highworth STW Westrop Brook 22 243h -
Thames Water Highworth STW Westrop Brook 8 89h -
Thames Water Blunsdon STW Share Ditch 5 42h 30m -
Thames Water Hannington Bydemill Ditch 7 15h 45m -
Thames Water Blunsdon STW Share Ditch 5 11h -
Thames Water Highworth Eastrop CSO (GWA site) N/A 7 7h 45m 980 h
Thames Water Highworth Eastrop CSO (GWA site) N/A 1 3h 15m -
Thames Water Hannington Bydemill Ditch 1 1h 15m -
Thames Water Kilda Road (Highworth) SPS Westrop Brook 0 0h -
Thames Water Stanton Fitzwarren SPS Bydemill Brook/Land 0 0h 61 h
Thames Water Stanton Fitzwarren SPS Bydemill Brook/Land 0 0h -
Thames Water Kilda Road (Highworth) SPS Westrop Brook 0 0h 1,054 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

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.