South Dorset was polluted by sewage 1,007 times in 2023
lasting 3,214 hours

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for South Dorset in 2023
54 Sites polluted by Wessex Water
1,007 sewage dumps
3,214 h duration
That's 4.46 months. On average 2.8 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for South Dorset in 2023. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 0 of the total 65 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Wessex Water Corfe River CORFE CASTLE STW 60 631 98.5
Wessex Water Unknown WEYMOUTH SEWAGE TREATMENT WORKS 90 424 95.4
Wessex Water River Frome MORRIS ROAD PUMPING STATION 46 296 99.8
Wessex Water River Frome STATION ROAD CSO 36 252 100
Wessex Water Corfe River GLEBE FARM PUMPING STATION 34 200 100
Wessex Water Swanage Bay SWANAGE TUNNEL 44 175 99.3
Wessex Water Stream At Winspit Botttom WORTH MATRAVERS WWTW 36 116 99.9
Wessex Water Corfe River CHURCH KNOWLE ANIMAL SANCTUARY PS 27 114 100
Wessex Water River Win EAST CHALDON PUMPING STATION 12 89 100
Wessex Water River Win BLACKNOLL 22 73 100
Wessex Water Unnamed Stream To Durlston Bay DURLSTON ROAD PS 43 66 100
Wessex Water Unnamed Stream HARMAN'S CROSS PUMPING STATION 13 65 99.9
Wessex Water River Piddle BRIANTSPUDDLE SEWAGE 9 58 100
Wessex Water River Frome RAILWAY COTTAGES PUMPING STATION 38 51 100
Wessex Water Ulwell Stream NEW SWANAGE ATTENUATION TANK 18 47 99.9
Wessex Water Weymouth Harbour Via Sws RODWELL AVENUE CSO 55 45 99.9
Wessex Water Corfe River RED LANE PUMPING STATION 14 42 100
Wessex Water English Channel OSMINGTON BAY HOLIDAY CENTRE PS 17 39 100
Wessex Water River Frome LYTCHETT LANE PUMPING STATION 11 39 100
Wessex Water Radipole Lake ROMAN ROAD COMBINED SEWER OVERFLOW 48 37 100
Wessex Water River Wey CHAFEY'S LAKE CSO 12 29 99.8
Wessex Water Little Sea WADMORE LANE PUMPING STATION 12 27 100
Wessex Water Corfe River STUDLAND ROAD PUMPING STATION 20 25 100
Wessex Water Weymouth Harbour THE MARSH COMBINED SEWER OVERFLOW 9 24 96.1
Wessex Water Weymouth Harbour ADMIRAL HARDY CSO 8 24 99.8
Wessex Water River Frome DUNCAN CRESCENT PUMPING STATION 15 23 100
Wessex Water Freshwater Bay SOUTHWELL PS 19 23 100
Wessex Water English Channel WEST LULWORTH PUMPING STATION 8 21 100
Wessex Water Unnamed Stream RINGSTEAD STW 3 16 96.7
Wessex Water Weymouth Harbour CHICKERELL ROAD CSO 41 14 100
Wessex Water River Win EAST BURTON CROSS ROAD PS 2 13 100
Wessex Water River Frome BOVINGTON TERMINAL PUMPING STATION 3 12 100
Wessex Water Portland Harbour REAR DONCASTER ROAD 11 8 99.9
Wessex Water To Studland Bay WATERY LANE PUMPING STATION 1 8 100
Wessex Water Groundwater Via Infilt System WESTON STREET COMBINED SEWER OF 12 7 97.3
Wessex Water River Swan HERSTON CROSS ATTENUATION TANK CSO 5 7 87.7
Wessex Water English Channel PORTLAND BILL STORM OVERFLOW 8 6 98.2
Wessex Water River Wey FAIRFIELD SEWAGE PUMPING STATION 4 6 100
Wessex Water Weymouth Bay MELCOMBE AVENUE CSO 14 6 95.1
Wessex Water Studland Bay COOMBE PUMPING STATION 8 6 99.9
Wessex Water Weymouth Harbour CHICKERELL BOYS CLUB CSO 22 5 99.5
Wessex Water West Bay HIGH STREET CSO 31 4 99.9
Wessex Water Portland Harbour CASTLE COVE PUMPING STATION 5 4 100
Wessex Water Portland Harbour VICTORIA SQUARE PORTLAND 12 3 100
Wessex Water English Channel LULWORTH BEACH PUMPING STATION 11 2 93
Wessex Water Radipole Lake Via Sws CORONATION CRESCENT CSO 11 2 100
Wessex Water Weymouth Harbour WESTON ROAD CSO 3 2 99.9
Wessex Water Radipole Lake GRASMERE ROAD CSO 3 1 99.9
Wessex Water Portland Harbour HILLCREST ROAD PUMPIMG STATION 4 1 95
Wessex Water Weymouth Harbour Via Sws MARLOW ROAD COMBINED SEWER OVERFLOW 3 0 100
Wessex Water Weymouth Harbour LONGCROFT ROAD CSO 7 0 57.3
Wessex Water Lyme Bay PORTLAND RAILWAY GRAVITY SEWER 2 0 100
Wessex Water Radipole Lake Via Sws ULLSWATER CRESCENT CSO 3 0 99.8
Wessex Water Weymouth Harbour SPRING ROAD COMBINED SEWER OVERFLOW 2 0 99.5
Wessex Water River Piddle AFFPUDDLE PUMPING STATION 0 0 100
Wessex Water Radipole Lake Via Sws SPA ROAD COMBINED SEWER OVERFLOW 0 0 100
Wessex Water Fleet FERRYBRIDGE PS 0 0 99.9
Wessex Water Weymouth Bay CRANFORD AVENUE CSO 0 0 99.9
Wessex Water Weymouth Harbour WARDCLIFFE ROAD CSO 0 0 100
Wessex Water Ground PENNSYLVANIA ROAD PS 0 0 100
Wessex Water River Frome EAST KNIGHTON PUMPING STATION 0 0 100
Wessex Water Corfe River HALVES COTTAGE PUMPING STATION 0 0 96.1
Wessex Water Weymouth Harbour RADIPOLE LAKE PUMPING STATION 0 0 100
Wessex Water Weymouth Harbour Via Sws SPRING LANE CSO 0 0 100
Wessex Water Weymouth Harbour NEWSTEAD ROAD PUMPING STATION 0 0 100

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. This 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.