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South Dorset - Live Sewage

Polluted by sewage 5,568 hours in 2026 , monitoring offline 678 hours , potential overflows 558 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 South Dorset 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 - 1,552 hours , 558 potential
Feb - 3,775 hours , 172 offline
Mar - 240 hours , 95 offline
Apr - 0 hours
May - 1 hours , 1 offline
Jun - 0 hours
Jul - 0 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Wessex Water EAST KNIGHTON BLACKNOLL River Win 43 952h 41m 407 h
Wessex Water XXXX RAILWAY COTTAGES River Frome 43 829h 59m -
Wessex Water WOOL STATION ROAD IN GRASS VERGE River Frome 46 800h 4m -
Wessex Water WEST LULWORTH HAMBURY FARM English Channel 39 769h 13m -
Wessex Water CORFE CASTLE XXXXX FARM ROAD STORM TANK Corfe River 24 321h 5m 558 h
Wessex Water EAST BURTON CROSS ROADS River Win 32 317h 55m -
Wessex Water BRIANTSPUDDLE River Piddle 12 216h 29m -
Wessex Water WEYMOUTH INLET Unknown 35 211h 56m -
Wessex Water EAST CHALDON River Win 14 145h -
Wessex Water BOVINGTON MORRIS ROAD River Frome 22 133h 41m -
Wessex Water XXXXX XXXXXX GLEBE FARM Corfe River 15 106h 15m -
Wessex Water Unknown Unknown 15 99h 22m -
Wessex Water HARMANS CROSS TRANSFER STATION Unnamed Stream 14 70h 13m -
Wessex Water Unknown Unknown 13 68h 56m -
Wessex Water SWANAGE MARINE PARADE TUNNEL Swanage Bay 12 59h 34m -
Wessex Water CHURCH KNOWLE ANIMAL SANCTUARY Corfe River 13 56h 36m -
Wessex Water WEYMOUTH CHICKERELL/CHAFFEYS ATTENUATION TANK RADIPOLE River Wey 8 37h 8m -
Wessex Water Unknown Unknown 10 33h 32m -
Wessex Water BOVINGTON TERMINAL River Frome 4 30h 33m -
Wessex Water OSMINGTON PONTINS English Channel 8 26h 27m -
Wessex Water BOVINGTON LYTCHETT LANE River Frome 7 25h 18m -
Wessex Water Unknown Unknown 11 22h 30m -
Wessex Water WEYMOUTH RODWELL AVENUE Weymouth Harbour Via Sws 15 22h 30m -
Wessex Water WEYMOUTH ROMAN ROAD NEW Radipole Lake 13 21h 29m -
Wessex Water WEYMOUTH KNIGHTSDALE ROAD ATTENUATION TANK Weymouth Harbour 8 19h 33m -
Wessex Water WORTH MATRAVERS STORM TANK Stream At Winspit Botttom 8 17h 33m -
Wessex Water WEYMOUTH CHICKERELL ROAD O/S ALLOTMENTS NEAR THE ADMIRAL HARDY Weymouth Harbour 6 16h 18m -
Wessex Water PORTLAND SOUTHWELL Freshwater Bay 7 16h 2m -
Wessex Water SWANAGE SHORE ROAD O/S NURSING HOME Ulwell Stream 3 15h 23m -
Wessex Water CORFE CASTLE RED LANE Corfe River 3 14h 32m -
Wessex Water WEST LULWORTH OUTFALL PS English Channel 3 12h 27m -
Wessex Water SWANAGE HERSTON CROSS ATTENUATION TANK River Swan 2 11h 18m -
Wessex Water CORFE CASTLE STUDLAND ROAD Corfe River 6 11h -
Wessex Water SWANAGE DURLSTON ROAD Unnamed Stream To Durlston Bay 8 10h 43m -
Wessex Water STUDLAND WADMORE LANE Little Sea 4 10h 23m -
Wessex Water CHICKERELL LOWER WAY River Wey 4 8h 18m -
Wessex Water EAST KNIGHTON River Win 1 7h 2m -
Wessex Water WYKE REGIS DONCASTER ROAD Portland Harbour 5 4h 31m -
Wessex Water Unknown Unknown 1 2h 44m -
Wessex Water SWANAGE MARINE PARADE X Swanage Bay 1 2h 42m -
Wessex Water SWANAGE MARINE PARADE X Swanage Bay 1 2h 42m -
Wessex Water PORTLAND VICTORIA SQUARE Portland Harbour 5 2h 14m -
Wessex Water WEYMOUTH CORONATION CRES 0/S NO.X Radipole Lake Via Sws 3 1h 16m -
Wessex Water STUDLAND COOMBE Studland Bay 2 1h 9m -
Wessex Water WEYMOUTH CHICKERELL ROAD BOYS CLUB Weymouth Harbour 3 0h 40m -
Wessex Water WEYMOUTH MELCOMBE AVENUE Weymouth Bay 2 0h 40m -
Wessex Water PORTLAND BILL English Channel 1 0h 30m -
Wessex Water RINGSTEAD BAY STORM TANK Unnamed Stream 1 0h 24m -
Wessex Water PORTLAND WESTON STREET NEW Groundwater Via Infilt System 1 0h 10m -
Wessex Water WEYMOUTH CASTLE COVE OLD CASTLE ROAD WYKE REGIS Portland Harbour 1 0h 9m -
Wessex Water STUDLAND WADMORE LANE Little Sea 0 0h -
Wessex Water SWANAGE MARINE PARADE X Swanage Bay 0 0h -
Wessex Water WEYMOUTH KNIGHTSDALE ROAD ATTENUATION TANK Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH RADIPOLE Weymouth Harbour 0 0h 3 h
Wessex Water WEYMOUTH WESTON ROAD Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH RADIPOLE Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH CRANFORD AVENUE Weymouth Bay 0 0h -
Wessex Water PORTLAND VICTORIA SQUARE Portland Harbour 0 0h -
Wessex Water CORFE CASTLE RED LANE Corfe River 0 0h -
Wessex Water PORTLAND BILL English Channel 0 0h -
Wessex Water WEYMOUTH CHICKERELL ROAD Weymouth Harbour 0 0h -
Wessex Water SWANAGE MARINE PARADE TUNNEL Swanage Bay 0 0h -
Wessex Water WEYMOUTH WESTON ROAD Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH GRASMERE ROAD Radipole Lake 0 0h -
Wessex Water WEYMOUTH SPA ROAD/ ROMAN ROAD AND QUEENS ROAD JCT. Radipole Lake Via Sws 0 0h -
Wessex Water WEYMOUTH CASTLE COVE OLD CASTLE ROAD WYKE REGIS Portland Harbour 0 0h -
Wessex Water PORTLAND RAILWAY GRAVITY SEWER Lyme Bay 0 0h -
Wessex Water XXXXX XXXXXX HALVES COTTAGES Corfe River 0 0h 0 h
Wessex Water WEYMOUTH CHICKERELL/CHAFFEYS ATTENUATION TANK RADIPOLE River Wey 0 0h -
Wessex Water CORFE CASTLE XXXXX FARM ROAD STORM TANK Corfe River 0 0h -
Wessex Water Unknown Unknown 0 0h -
Wessex Water SWANAGE SHORE ROAD O/S NURSING HOME Ulwell Stream 0 0h -
Wessex Water WEYMOUTH WARDCLIFFE ROAD Weymouth Harbour 0 0h -
Wessex Water SWANAGE MARINE PARADE X Swanage Bay 0 0h -
Wessex Water WEYMOUTH FERRYBRIDGE PORTLAND ROAD Fleet 0 0h 2 h
Wessex Water WYKE REGIS HILLCREST ROAD Portland Harbour 0 0h -
Wessex Water Unknown Unknown 0 0h 0 h
Wessex Water WYKE REGIS DONCASTER ROAD Portland Harbour 0 0h -
Wessex Water WEYMOUTH SPRING ROAD NR JUNC WITH MOUNT STREET Weymouth Harbour 0 0h -
Wessex Water EAST KNIGHTON River Win 0 0h -
Wessex Water WEYMOUTH ULLSWATER CRESCENT Radipole Lake Via Sws 0 0h -
Wessex Water WEYMOUTH SPRING LANE Weymouth Harbour Via Sws 0 0h -
Wessex Water EAST CHALDON River Win 0 0h -
Wessex Water WEYMOUTH KNIGHTSDALE NEWSTEAD ROAD Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH INLET Unknown 0 0h -
Wessex Water SWANAGE HERSTON CROSS ATTENUATION TANK River Swan 0 0h -
Wessex Water WEYMOUTH CHICKERELL ROAD BOYS CLUB Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH CORONATION CRES 0/S NO.X Radipole Lake Via Sws 0 0h -
Wessex Water CHICKERELL LOWER WAY River Wey 0 0h -
Wessex Water PORTLAND PENNSYLVANIA ROAD Ground 0 0h -
Wessex Water WEYMOUTH MARLOW ROAD Weymouth Harbour Via Sws 0 0h -
Wessex Water WEYMOUTH CHICKERELL ROAD Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH KNIGHTSDALE NEWSTEAD ROAD Weymouth Harbour 0 0h -
Wessex Water STUDLAND COOMBE Studland Bay 0 0h -
Wessex Water RINGSTEAD BAY STORM TANK Unnamed Stream 0 0h -
Wessex Water PORTLAND HIGH STREET West Bay 0 0h -
Wessex Water WEYMOUTH ULLSWATER CRESCENT Radipole Lake Via Sws 0 0h -
Wessex Water STUDLAND WATERY LANE Studland Bay 0 0h -
Wessex Water WEYMOUTH MARLOW ROAD Weymouth Harbour Via Sws 0 0h 131 h
Wessex Water CHURCH KNOWLE ANIMAL SANCTUARY Corfe River 0 0h -
Wessex Water PORTLAND SOUTHWELL Freshwater Bay 0 0h -
Wessex Water OSMINGTON PONTINS English Channel 0 0h -
Wessex Water STUDLAND WATERY LANE Studland Bay 0 0h -
Wessex Water WEYMOUTH RODWELL AVENUE Weymouth Harbour Via Sws 0 0h -
Wessex Water BOVINGTON MORRIS ROAD River Frome 0 0h -
Wessex Water XXXXX XXXXXX HALVES COTTAGES Corfe River 0 0h -
Wessex Water AFFPUDDLE River Piddle 0 0h -
Wessex Water WEST LULWORTH OUTFALL PS English Channel 0 0h -
Wessex Water WEYMOUTH LONGCROFT ROAD / QUEENSLAND ROAD Weymouth Harbour 0 0h -
Wessex Water XXXX RAILWAY COTTAGES River Frome 0 0h -
Wessex Water WEYMOUTH SPRING LANE Weymouth Harbour Via Sws 0 0h 131 h
Wessex Water XXXXX XXXXXX GLEBE FARM Corfe River 0 0h -
Wessex Water WEYMOUTH GRASMERE ROAD Radipole Lake 0 0h -
Wessex Water WEYMOUTH LONGCROFT ROAD / QUEENSLAND ROAD Weymouth Harbour 0 0h -
Wessex Water SWANAGE DURLSTON ROAD Unnamed Stream To Durlston Bay 0 0h -
Wessex Water AFFPUDDLE River Piddle 0 0h -
Wessex Water WEYMOUTH FERRYBRIDGE PORTLAND ROAD Fleet 0 0h -
Wessex Water EAST KNIGHTON BLACKNOLL River Win 0 0h -
Wessex Water BRIANTSPUDDLE River Piddle 0 0h -
Wessex Water BOVINGTON LYTCHETT LANE River Frome 0 0h -
Wessex Water WEYMOUTH MELCOMBE AVENUE Weymouth Bay 0 0h -
Wessex Water WOOL STATION ROAD IN GRASS VERGE River Frome 0 0h -
Wessex Water PORTLAND PENNSYLVANIA ROAD Ground 0 0h -
Wessex Water WEYMOUTH CRANFORD AVENUE Weymouth Bay 0 0h -
Wessex Water PORTLAND RAILWAY GRAVITY SEWER Lyme Bay 0 0h -
Wessex Water CORFE CASTLE STUDLAND ROAD Corfe River 0 0h -
Wessex Water PORTLAND WESTON STREET NEW Groundwater Via Infilt System 0 0h -
Wessex Water WEST LULWORTH HAMBURY FARM English Channel 0 0h -
Wessex Water HARMANS CROSS TRANSFER STATION Unnamed Stream 0 0h -
Wessex Water WORTH MATRAVERS STORM TANK Stream At Winspit Botttom 0 0h -
Wessex Water BOVINGTON TERMINAL River Frome 0 0h -
Wessex Water WEYMOUTH WARDCLIFFE ROAD Weymouth Harbour 0 0h -
Wessex Water WEYMOUTH CHICKERELL ROAD O/S ALLOTMENTS NEAR THE ADMIRAL HARDY Weymouth Harbour 0 0h -
Wessex Water EAST BURTON CROSS ROADS River Win 0 0h -
Wessex Water WEYMOUTH ROMAN ROAD NEW Radipole Lake 0 0h -
Wessex Water WYKE REGIS HILLCREST ROAD Portland Harbour 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.