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East Surrey - 2025 Sewage

Polluted by sewage 3,897 hours in 2025

© OpenStreetMap contributors
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 East Surrey 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 - 1,480 hours
Feb - 607 hours
Mar - 2 hours
Apr - 2 hours
May - 0 hours
Jun - 88 hours
Jul - 64 hours
Aug - 46 hours
Sept - 115 hours
Oct - 329 hours
Nov - 160 hours
Dec - 998 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Thames Water Burstow STW Burstow Stream 56 788h 30m -
Southern Water GODSTONE SSO - 115799 Gibbs Brook 33 498h 42m -
Southern Water OXTED SSO - 115423 River Eden 39 361h 16m -
Thames Water Burstow STW Burstow Stream 21 336h 45m -
Southern Water FELBRIDGE CSO - 116038 Felbridge Water 40 299h 24m -
Southern Water LINGFIELD SSO - 115415 Ray Brook 31 290h 8m -
Southern Water EDEN VALE EAST GRINSTEAD SSO - 115912 Eden Vale Stream 17 228h 56m -
Southern Water FELBRIDGE CSO - 116038 Felbridge Water 17 137h 4m -
Southern Water FURZEFIELD ROAD BALDWINS HILL CEO - 108578 River Medway 20 128h 13m -
Southern Water OXTED SSO - 115423 River Eden 14 125h 30m -
Southern Water GODSTONE SSO - 115799 Gibbs Brook 7 120h 35m -
Thames Water Merstham STW Redhill Brook 10 114h -
Southern Water EDEN VALE EAST GRINSTEAD SSO - 115912 Eden Vale Stream 8 111h 14m -
Thames Water Merstham STW Redhill Brook 5 92h 15m -
Southern Water LINGFIELD SSO - 115415 Ray Brook 10 69h 56m -
Southern Water COPTHORNE ROAD DOMEWOOD CEO - 107391 Freshwater River 9 61h 43m -
Southern Water OXTED CSO - 115422 River Eden 20 42h 52m -
Southern Water Unknown Unknown 5 37h 3m -
Southern Water COPTHORNE ROAD DOMEWOOD CEO - 107391 Freshwater River 3 24h 30m -
Southern Water OXTED CSO - 115422 River Eden 3 12h 4m -
Southern Water FURZEFIELD ROAD BALDWINS HILL CEO - 108578 River Medway 4 11h 58m -
Southern Water LINGFIELD HOSPITAL SCHOOL CEO - 108670 River Eden 1 4h 24m -
Southern Water Unknown Unknown 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.