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Area of Outstanding Natural Beauty

Mendip Hills - Live Sewage

Polluted by sewage 5,062 hours in 2026 , monitoring offline 355 hours so far..

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

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Totals for 2026

Sewage5,062 hours
Monitoring offline355 hours
Potential pollution0 hours
Storm overflows25

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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 - 1,784 hours
Feb - 3,035 hours
Mar - 212 hours
Apr - 0 hours , 12 offline
May - 4 hours
Jun - 0 hours
Jul - 0 hours
Aug - 25 hours
Sept - 0 hours , 199 offline
Oct - 0 hours , 144 offline

Storm overflows in and around Mendip Hills

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Wessex Water Unknown Unknown 55 1,129h 50m -
Wessex Water EAST HARPTREE STORM TANK River Chew 75 1,025h 58m -
Wessex Water BUTCOMBE STORM TANK Congresbury Yeo And Butcombe 44 1,010h 33m -
Wessex Water WINSCOMBE STORM TANK Lox Yeo River 53 962h 35m -
Wessex Water UBLEY FROG LANE STORM TANK Congresbury Yeo, Lake 39 551h 47m -
Wessex Water CROSS EAST Cross Rhyne 19 150h 20m -
Wessex Water BLAGDON STORM TANK Congresbury Yeo 15 133h 18m -
Wessex Water CHEDDAR FROGLANDS River Yeo 28 62h 7m -
Wessex Water BISHOP SUTTON River Chew 27 35h 41m 343 h
Wessex Water WINSCOMBE INLET Lox Yeo River 1 0h 20m -
Wessex Water BISHOP SUTTON River Chew 0 0h -
Wessex Water WINSCOMBE INLET Lox Yeo River 0 0h -
Wessex Water WINSCOMBE STORM TANK Lox Yeo River 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water CHEDDAR FROGLANDS River Yeo 0 0h -
Wessex Water EAST HARPTREE STORM TANK River Chew 0 0h -
Wessex Water BLAGDON STORM TANK Congresbury Yeo 0 0h -
Wessex Water CROSS EAST Cross Rhyne 0 0h -
Wessex Water WOOKEY HOLE KENNEL BATCH / HIGH STREET River Axe Via Sws 0 0h -
Wessex Water LOXTON SOUTH OF THE COACH HOUSE Axe Link Rhtne To River Yeo 0 0h -
Wessex Water SANDFORD BATCH Towerhead Brook 0 0h -
Wessex Water LOXTON SOUTH OF THE COACH HOUSE Axe Link Rhtne To River Yeo 0 0h 12 h
Wessex Water UBLEY FROG LANE STORM TANK Congresbury Yeo, Lake 0 0h -
Wessex Water BUTCOMBE STORM TANK Congresbury Yeo And Butcombe 0 0h -
Wessex Water SANDFORD BATCH Towerhead 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.