North East Somerset and Hanham - Live Sewage

Polluted by sewage 11,649 hours in 2026 - That's 1.35 years , monitoring offline 1,566 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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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in North East Somerset and Hanham so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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 North East Somerset and Hanham in 2026

Sewage11,649 hours
Monitoring offline1,566 hours
Potential pollution0 hours
Storm overflows94

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Constituencies near North East Somerset and Hanham

Daily Data

Jan - 4,538 hours , 2 offline
Feb - 5,795 hours , 6 offline
Mar - 833 hours , 11 offline
Apr - 1 hours , 19 offline
May - 16 hours , 328 offline
Jun - 0 hours , 522 offline
Jul - 0 hours
Aug - 46 hours , 11 offline
Sept - 0 hours , 409 offline
Oct - 398 hours , 145 offline
Nov - 19 hours , 110 offline
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Wessex Water CHEW STOKE WALLEY COURT ROAD STORM TANK River Chew 96 1,925h 58m 207 h
Wessex Water SALTFORD MEAD LANE STORM TANK River Avon 57 1,218h 19m -
Wessex Water Unknown Unknown 56 1,136h 57m -
Wessex Water EAST HARPTREE STORM TANK River Chew 82 1,045h 40m -
Wessex Water PAULTON STORM TANK Cam Brook 53 1,002h 50m -
Wessex Water FARMBOROUGH STORM TANK Conygre Brook 44 770h 57m -
Wessex Water COMPTON DANDO INLET Bathford Brook 61 693h 15m -
Wessex Water COMPTON DANDO TURNBRIDGE River Chew 42 660h 36m -
Wessex Water STANTON DREW STORM TANK River Chew 31 635h 18m -
Wessex Water UBLEY FROG LANE STORM TANK Congresbury Yeo, Lake 44 593h 10m -
Wessex Water TEMPLE CLOUD BRIDGE Cam Brook 33 498h 35m -
Wessex Water KEYNSHAM STORM TANK River Avon 23 207h 48m -
Wessex Water CHEW MAGNA BATTLE LANE Winford Brook 30 186h 11m -
Wessex Water WILLSBRIDGE River Avon 37 155h 58m -
Wessex Water CHEW STOKE BILBIE ROAD River Chew 38 146h 56m -
Wessex Water Unknown Unknown 11 136h 4m -
Wessex Water PAULTON GOOSARD BRIDGE Cam Brook 28 110h 30m -
Wessex Water BRISTOL KINGSWOOD HILL STREET Siston Brook Via Sws 4 71h 48m 110 h
Wessex Water KEYNSHAM HIGH LEVEL PS AVON MILL LANE River Chew 26 63h 28m -
Wessex Water CORSTON NEWTON ST LOE Corston Brook 19 63h 20m -
Wessex Water BITTON River Boyd 9 61h 2m -
Wessex Water BISHOP SUTTON River Chew 32 40h 54m 343 h
Wessex Water TIMSBURY RADFORD HILL Cam Brook 16 35h 42m -
Wessex Water PAULTON WORKS OFF BRISTOL ROAD Cam Brook 13 27h 28m -
Wessex Water CLUTTON GREENBROOK Cam Brook 12 26h 51m 851 h
Wessex Water CHEW MAGNA DUMPERS LANE River Chew 22 24h 42m -
Wessex Water SALTFORD O/S XX HIGH STREET River Avon 30 21h 54m -
Wessex Water SALTFORD SALTFORD HILL River Avon 10 17h 13m -
Wessex Water KEYNSHAM THE HAMS River Avon 15 17h 2m -
Wessex Water HINTON BLEWETT INLET Cam Brook 6 12h 44m -
Wessex Water HALLATROW Cam Brook 2 10h 35m -
Wessex Water SALTFORD MEAD LANE River Avon Via Sws 1 9h 10m -
Wessex Water BRISTOL KINGSWOOD ORCHARD VALE NEW O/S 42 Siston Brook Via Sws 10 7h 48m -
Wessex Water KEYNSHAM LOW LEVEL River Chew 2 2h 10m -
Wessex Water LOWER STANTON DREW River Chew 2 1h 54m -
Wessex Water SALTFORD WICKHOUSE FARM BATH ROAD River Avon Via Sws 2 1h 38m -
Wessex Water KEYNSHAM CHARLTON ROAD O/S XXX Charlton Bottom Via Sws 2 1h 28m -
Wessex Water BRISTOL HANHAM CENTRAL AVENUE River Avon Via Sws 3 1h 24m -
Wessex Water Unknown Unknown 3 1h 4m 18 h
Wessex Water CLUTTON MAYPOLE FARM Cam Brook 4 0h 54m -
Wessex Water KEYNSHAM ST LADOC / BRISTOL ROAD Charlton Bottom Via Sws 2 0h 37m -
Wessex Water Unknown Unknown 1 0h 34m -
Wessex Water Unknown Unknown 1 0h 18m -
Wessex Water BRISTOL WARMLEY MILL LANE AT REAR Siston Brook 1 0h 12m -
Wessex Water BRISTOL KINGSWOOD ORCHARD ROAD Siston Brook Via Sws 1 0h 10m -
Wessex Water HINTON BLEWETT INLET Cam Brook 0 0h -
Wessex Water KEYNSHAM STORM TANK River Avon 0 0h -
Wessex Water WILLSBRIDGE River Avon 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water PAULTON GOOSARD BRIDGE Cam Brook 0 0h -
Wessex Water STANTON DREW STORM TANK River Chew 0 0h -
Wessex Water BRISTOL ULLSWATER CLOSE Siston Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 6 h
Wessex Water KEYNSHAM LOW LEVEL River Chew 0 0h -
Wessex Water BRISTOL KINGSWOOD HILL STREET Siston Brook Via Sws 0 0h -
Wessex Water SALTFORD SALTFORD HILL River Avon 0 0h -
Wessex Water COMPTON DANDO TURNBRIDGE River Chew 0 0h -
Wessex Water CHEW STOKE BILBIE ROAD River Chew 0 0h -
Wessex Water BRISTOL KINGSWOOD ORCHARD VALE NEW O/S 42 Siston Brook Via Sws 0 0h -
Wessex Water CLUTTON GREENBROOK Cam Brook 0 0h -
Wessex Water CLUTTON MAYPOLE FARM Cam Brook 0 0h -
Wessex Water BISHOP SUTTON River Chew 0 0h -
Wessex Water SALTFORD O/S XX HIGH STREET River Avon 0 0h -
Wessex Water CHEW MAGNA DUMPERS LANE River Chew 0 0h -
Wessex Water SALTFORD MEAD LANE STORM TANK River Avon 0 0h -
Wessex Water FARMBOROUGH STORM TANK Conygre Brook 0 0h -
Wessex Water EAST HARPTREE STORM TANK River Chew 0 0h -
Wessex Water CHEW MAGNA BATTLE LANE Winford Brook 0 0h -
Wessex Water PAULTON STORM TANK Cam Brook 0 0h -
Wessex Water KEYNSHAM CHARLTON ROAD O/S XXX Charlton Bottom Via Sws 0 0h -
Wessex Water BITTON River Boyd 0 0h -
Wessex Water TIMSBURY RADFORD HILL Cam Brook 0 0h -
Wessex Water KINGSWOOD WILLSBRIDGE Siston Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 9 h
Wessex Water LOWER STANTON DREW River Chew 0 0h -
Wessex Water KEYNSHAM ST LADOC / BRISTOL ROAD Charlton Bottom Via Sws 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water KEYNSHAM HIGH LEVEL PS AVON MILL LANE River Chew 0 0h -
Wessex Water BRISTOL ULLSWATER CLOSE Siston Brook 0 0h -
Wessex Water COMPTON DANDO INLET Bathford Brook 0 0h -
Wessex Water TEMPLE CLOUD BRIDGE Cam Brook 0 0h -
Wessex Water BRISTOL HANHAM CENTRAL AVENUE River Avon Via Sws 0 0h -
Wessex Water SALTFORD MEAD LANE River Avon Via Sws 0 0h -
Wessex Water KEYNSHAM THE HAMS River Avon 0 0h -
Wessex Water Unknown Unknown 0 0h 13 h
Wessex Water CHEW STOKE WALLEY COURT ROAD STORM TANK River Chew 0 0h -
Wessex Water KINGSWOOD WILLSBRIDGE Siston Brook 0 0h 6 h
Wessex Water CORSTON NEWTON ST LOE Corston Brook 0 0h -
Wessex Water BRISTOL WARMLEY MILL LANE AT REAR Siston Brook 0 0h -
Wessex Water PAULTON WORKS OFF BRISTOL ROAD Cam Brook 0 0h -
Wessex Water BRISTOL KINGSWOOD ORCHARD ROAD Siston Brook Via Sws 0 0h -
Wessex Water UBLEY FROG LANE STORM TANK Congresbury Yeo, Lake 0 0h -
Wessex Water HALLATROW Cam 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.

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Analysing sewage pollution by the Water Industry

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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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