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Melksham and Devizes - Live Sewage

Polluted by sewage 9,473 hours in 2026 - That's 1.1 years , monitoring offline 187 hours , potential overflows 675 hours so far..

© 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 Melksham and Devizes 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.

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Daily Data

Jan - 3,452 hours , 675 potential
Feb - 5,618 hours , 1 offline
Mar - 394 hours , 4 offline
Apr - 3 hours , 5 offline
May - 6 hours , 176 offline
Jun - 0 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Wessex Water BROADS GREEN River Marden 62 1,360h 4m -
Wessex Water COATE SPANIELS BRIDGE River Avon 52 840h 16m 3 h
Wessex Water BOX MILL LANE STORM TANK By Brook 46 718h 10m -
Wessex Water WINGFIELD CHURCH LANE Lam Brook Stream 34 697h 28m -
Wessex Water SEEND STORM TANK Seend Hill Stream 31 528h 31m -
Wessex Water POULSHOT TOWNSEND Summerham Brook 34 516h 54m -
Wessex Water BOWERHILL SHAILS LANE STORM TANK Berryfield Stream 27 458h 22m -
Wessex Water FRESHFORD STORM TANK Bristol Avon 30 457h 45m -
Wessex Water WESTWOOD STORM TANK River Frome 26 355h 12m -
Wessex Water HOLT THE STAR River Avon 35 329h 52m -
Wessex Water MELKSHAM INLET River Avon 26 313h 56m -
Wessex Water MELKSHAM BATH ROAD OFF ROAD F/O SCOUT HALL Clackers Brook 28 308h 42m -
Wessex Water MELKSHAM SHAW C OF E SCHOOL PLAYING FIELD South Brook 29 306h 8m -
Wessex Water BROUGHTON GIFFORD THE GREEN Chalfield Brook 22 278h 14m -
Wessex Water LAVINGTON WOODBRIDGE STORM TANK Semington Brook 21 234h 12m -
Wessex Water CALNE ROUGH LEAZE River Marden 19 226h 14m -
Wessex Water MELKSHAM STORM TANK River Avon 8 186h 44m 675 h
Wessex Water BOX MILL LANE By Brook 28 176h 29m -
Wessex Water SOUTH WRAXALL HOME FARM LOWER WRAXALL STORM TANK Chalfield Brook 10 172h 33m -
Wessex Water COULSTON Semington Brook 20 164h 24m -
Wessex Water HORTON HORTON FARM Etchilhampton Water 44 145h 37m -
Wessex Water SEMINGTON SEMINGTON BROOK Semington Brook 16 121h 44m -
Wessex Water BOX VALENS TERRACE By Brook 19 84h 18m -
Wessex Water GREAT CHEVERELL CHEVERELL GREEN Semington Brook 11 73h 50m -
Wessex Water BRADFORD-ON-AVON STORM TANK River Avon 8 53h 22m -
Wessex Water GREAT HINTON Semington Brook 6 51h 20m -
Wessex Water URCHFONT STORM TANK Semington Brook 6 39h 42m -
Wessex Water MELKSHAM SEMINGTON ROAD O/S POLICE STATION River Avon 12 35h 48m 0 h
Wessex Water DEVIZES WEBBS LANE STORM TANK Waylen Brook 4 29h 44m -
Wessex Water BULKINGTON WICKLEAZE Semington Brook 3 25h 52m -
Wessex Water BROUGHTON GIFFORD CURTIS ORCHARD Of Chalfield Brook 3 23h 44m -
Wessex Water MELKSHAM SEMINGTON ROAD Unknown 4 23h 29m -
Wessex Water KEEVIL THE STREET Semington Brook 2 22h 42m -
Wessex Water MONKTON COMBE MILL LANE Midford Brook 18 19h 6m -
Wessex Water BRADFORD-ON-AVON MARKET STREET JUNCTION WITH CHURCH STREET River Avon 19 17h 22m -
Wessex Water BRADFORD-ON-AVON SPRING FIELD AND WOOLLEY STREET JUNCTION River Avon 9 14h 6m -
Wessex Water WORTON MILL ROAD Semington Brook 1 12h 14m -
Wessex Water ERLESTOKE PARK STORM TANK Erlestoke Stream 3 9h 16m -
Wessex Water CALNE QUEMERFORD BRIDGE River Marden 5 7h 58m -
Wessex Water BOX RECREATION GROUND (ADJ TO) By Brook 11 6h 50m -
Wessex Water BOWERHILL SHAILS LANE INLET Berryfield Stream 2 5h 40m -
Wessex Water ROWDE STORM TANK Summerham Brook 1 5h 28m -
Wessex Water XXXXX XXXXXXXX BARTON BRIDGE BARTON FARM (175M DS) River Avon 4 3h 6m -
Wessex Water COLERNE STORM TANK By Brook 1 2h 20m -
Wessex Water POULSHOT MILL LANE Summerham Brook 1 2h 12m -
Wessex Water WINSLEY STORM TANK River Avon 1 1h 58m -
Wessex Water BRADFORD-ON-AVON MARKET STREET/ SILVER STREET JUNCTION River Avon 2 1h 16m -
Wessex Water Unknown Unknown 1 1h 6m 7 h
Wessex Water LITTLETON PANELL CORNBURY MILL Unknown 2 1h 4m -
Wessex Water ROWDE TOWER VIEW Summerham Brook 2 1h 2m -
Wessex Water WEST LAVINGTON CHURCHILL ARMS NEW Semington Brook Via Sws 1 0h 8m -
Wessex Water LITTLETON PANELL RUSSELL MILL LANE Semington Brook Via Sws 1 0h 8m -
Wessex Water DEVIZES ROUNDWAY HOSPITAL Summerham Brook 1 0h 4m -
Wessex Water BOX MILL LANE STORM TANK By Brook 0 0h -
Wessex Water BOX MILL LANE By Brook 0 0h -
Wessex Water BROUGHTON GIFFORD THE GREEN Chalfield Brook 0 0h -
Wessex Water MELKSHAM SEMINGTON ROAD Unknown 0 0h -
Wessex Water WESTWOOD STORM TANK River Frome 0 0h -
Wessex Water POTTERNE STORM TANK Semington Brook 0 0h -
Wessex Water DEVIZES VALLEY SEWER Poulshot Stream 0 0h -
Wessex Water MELKSHAM BATH ROAD OFF ROAD F/O SCOUT HALL Clackers Brook 0 0h -
Wessex Water MELKSHAM SEMINGTON ROUNDABOUT Unknown 0 0h -
Wessex Water BOX RECREATION GROUND (ADJ TO) By Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 1 h
Wessex Water POTTERNE STORM TANK Semington Brook 0 0h 2 h
Wessex Water GREAT HINTON Semington Brook 0 0h -
Wessex Water BRADFORD-ON-AVON MARKET STREET JUNCTION WITH CHURCH STREET River Avon 0 0h -
Wessex Water BOWERHILL SHAILS LANE STORM TANK Berryfield Stream 0 0h -
Wessex Water POTTERNE WICK Worton Stream 0 0h -
Wessex Water SOUTH WRAXALL HOME FARM LOWER WRAXALL STORM TANK Chalfield Brook 0 0h -
Wessex Water BULKINGTON WICKLEAZE Semington Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 0 h
Wessex Water MELKSHAM STORM TANK River Avon 0 0h -
Wessex Water CALNE QUEMERFORD BRIDGE River Marden 0 0h -
Wessex Water LAVINGTON WOODBRIDGE STORM TANK Semington Brook 0 0h -
Wessex Water BOWERHILL SHAILS LANE INLET Berryfield Stream 0 0h -
Wessex Water MELKSHAM SEMINGTON ROUNDABOUT Unknown 0 0h -
Wessex Water DEVIZES DUNKIRK HILL Summerham Brook 0 0h -
Wessex Water URCHFONT STORM TANK Semington Brook 0 0h -
Wessex Water SEEND STORM TANK Seend Hill Stream 0 0h -
Wessex Water BROUGHTON GIFFORD CURTIS ORCHARD Of Chalfield Brook 0 0h -
Wessex Water FRESHFORD STORM TANK Bristol Avon 0 0h -
Wessex Water HORTON HORTON FARM Etchilhampton Water 0 0h -
Wessex Water POTTERNE WICK Worton Stream 0 0h 0 h
Wessex Water SEEND BELL INN / BELL HILL Summerham Brook 0 0h -
Wessex Water BOX VALENS TERRACE By Brook 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water ERLESTOKE PARK STORM TANK Erlestoke Stream 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water DEVIZES ROUNDWAY HOSPITAL Summerham Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 0 h
Wessex Water BRADFORD-ON-AVON SPRING FIELD AND WOOLLEY STREET JUNCTION River Avon 0 0h -
Wessex Water POULSHOT MILL LANE Summerham Brook 0 0h -
Wessex Water SEEND BELL INN / BELL HILL Summerham Brook 0 0h -
Wessex Water Unknown Unknown 0 0h 0 h
Wessex Water MELKSHAM INLET River Avon 0 0h -
Wessex Water Unknown Unknown 0 0h 169 h
Wessex Water Unknown Unknown 0 0h -
Wessex Water WINGFIELD CHURCH LANE Lam Brook Stream 0 0h -
Wessex Water MONKTON COMBE MILL LANE Midford Brook 0 0h -
Wessex Water LITTLETON PANELL CORNBURY MILL Unknown 0 0h -
Wessex Water ROWDE TOWER VIEW Summerham Brook 0 0h -
Wessex Water EASTERTON MANOR HOUSE Easterton Brook 0 0h -
Wessex Water MELKSHAM SEMINGTON ROAD O/S POLICE STATION River Avon 0 0h -
Wessex Water ROWDE STORM TANK Summerham Brook 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water WORTON MILL ROAD Semington Brook 0 0h -
Wessex Water BRADFORD-ON-AVON CULVER STREET RECREATION PARK River Avon 0 0h -
Wessex Water MELKSHAM SHAW C OF E SCHOOL PLAYING FIELD South Brook 0 0h -
Wessex Water COATE SPANIELS BRIDGE River Avon 0 0h -
Wessex Water COULSTON Semington Brook 0 0h -
Wessex Water BRADFORD-ON-AVON CULVER STREET RECREATION PARK River Avon 0 0h -
Wessex Water DEVIZES DUNKIRK HILL Summerham Brook 0 0h -
Wessex Water EASTERTON MANOR HOUSE Easterton Brook 0 0h -
Wessex Water HOLT THE STAR River Avon 0 0h -
Wessex Water WEST LAVINGTON CHURCHILL ARMS NEW Semington Brook Via Sws 0 0h -
Wessex Water BRADFORD-ON-AVON STORM TANK River Avon 0 0h -
Wessex Water SEMINGTON SEMINGTON BROOK Semington Brook 0 0h -
Wessex Water COLERNE STORM TANK By Brook 0 0h -
Wessex Water XXXXX XXXXXXXX BARTON BRIDGE BARTON FARM (175M DS) River Avon 0 0h -
Wessex Water GREAT CHEVERELL CHEVERELL GREEN Semington Brook 0 0h -
Wessex Water KEEVIL THE STREET Semington Brook 0 0h -
Wessex Water BROADS GREEN River Marden 0 0h -
Wessex Water CALNE ROUGH LEAZE River Marden 0 0h -
Wessex Water DEVIZES WEBBS LANE STORM TANK Waylen Brook 0 0h -
Wessex Water WINSLEY STORM TANK River Avon 0 0h -
Wessex Water POULSHOT TOWNSEND Summerham Brook 0 0h -
Wessex Water LITTLETON PANELL RUSSELL MILL LANE Semington Brook Via Sws 0 0h -
Wessex Water DEVIZES VALLEY SEWER Poulshot Stream 0 0h -
Wessex Water BRADFORD-ON-AVON MARKET STREET/ SILVER STREET JUNCTION River Avon 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

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.