Area of Outstanding Natural Beauty

Surrey Hills - Live Sewage

Polluted by sewage 2,161 hours in 2026 , monitoring offline 585 hours so far..

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

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Totals for Surrey Hills in 2026

Sewage2,161 hours
Monitoring offline585 hours
Potential pollution0 hours
Storm overflows23

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Daily Data - when it rained, and when they spilled

Square = rainfall none → heavy
Drop = sewage minutes → all day
Potential pollution Monitoring offline
Jan - 1,285 hours
Feb - 702 hours
Mar - 37 hours
Apr - 7 hours , 238 offline
May - 0 hours , 107 offline
Jun - 0 hours
Jul - 0 hours
Aug - 0 hours
Sept - 0 hours
Oct - 121 hours , 206 offline
Nov - 7 hours , 33 offline

Storm overflows in and around Surrey Hills

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Southern Water CHIDDINGFOLD SSO - 115804 Chiddingfold Stream 51 961h 28m -
Thames Water Dorking STW River Mole 27 427h -
Southern Water GRAYSWOOD CSO - 115984 Two S Of River Chidd 31 257h -
Thames Water Stonebridge sso, brockham River Mole 31 214h 15m 21 h
Southern Water TURNERS MEAD CHIDDINGFOLD CEO - 108370 Freshwater River 19 138h 53m -
Thames Water Castle Gardens (Dorking) SPS Mole 8 72h 30m -
Thames Water Boxhill SPS Into Land 14 42h 30m -
Thames Water Waverley Lane (Farnham) SPS Farnham Bourne 6 31h 15m 82 h
Thames Water Spooks hill, north holmwood Tanners Brook 2 5h 30m 41 h
Thames Water Churt SPS Whitmoor Vale Stream 2 5h 22m 440 h
Southern Water Unknown Unknown 1 3h 35m -
Southern Water NORTHBRIDGE CHIDDINGFOLD CEO - 108295 Un River Arun 1 1h 50m -
Thames Water Dorking STW River Mole 0 0h -
Southern Water TURNERS MEAD CHIDDINGFOLD CEO - 108370 Freshwater River 0 0h -
Thames Water Castle Gardens (Dorking) SPS Mole 0 0h -
Southern Water GRAYSWOOD CSO - 115984 Two S Of River Chidd 0 0h -
Thames Water Spooks hill, north holmwood Tanners Brook 0 0h -
Southern Water CHIDDINGFOLD SSO - 115804 Chiddingfold Stream 0 0h -
Thames Water Waverley Lane (Farnham) SPS Farnham Bourne 0 0h -
Thames Water Boxhill SPS Into Land 0 0h -
Thames Water Stonebridge sso, brockham River Mole 0 0h -
Thames Water Bentsbrook road Tanners Brook 0 0h -
Thames Water Churt SPS Whitmoor Vale Stream 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.