Plymouth, Sutton and Devonport was polluted by sewage 1,930 times in 2023
lasting 7,945 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 Plymouth, Sutton and Devonport in 2023
54 Sites polluted by South West Water
1,930 sewage dumps
7,945 h duration
That's 11.03 months. On average 5.3 times a day
Change Over Time
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Constituencies near Plymouth, Sutton and Devonport
Waterways in Plymouth, Sutton and Devonport

Pollution Summary 2023

Here are all the reported sewage overflow totals for Plymouth, Sutton and Devonport 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 66 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 %
South West Water Weston Mill Lake CAMELS HEAD WWTW 154 2,138 100
South West Water Plymouth Sound/Plym Estuary PLYMOUTH CENTRAL STW 141 1,182 100
South West Water River Tamar PS-DY2, NORTH YARD, DEVONPORT 96 985 100
South West Water River Plym Via Sws LAIRA PARK CSO 112 464 92.3
South West Water Plymouth Sound Via Sws CAMBRIDGE LANE COMBINED SEWER OF 88 397 89.1
South West Water Leigham Mill Stream EFFORD MARSH CSO 21 356 17.8
South West Water Sutton Harbour Via Sws 59 BRETONSIDE CSO 63 321 100
South West Water River Tamar DOCKYARD NO.3 PUMPING STATION 42 290 100
South West Water Plymouth Sound EASTERN KINGS PUMPING STATION 52 271 100
South West Water River Plym Via Sws LIPSON VALE 1 CSO 102 160 100
South West Water River Plym Via Sws PIKE ROAD COMBINED SEWER OVERFLOW 91 141 100
South West Water Stonehouse Creek Via Sws CENTRAL PARK CSO 85 126 100
South West Water Stonehouse Creek Via Sws PARADISE ROAD (GRAVEYARD) CSO 97 115 98.4
South West Water Plymouth Sound OCEAN COURT PUMPING STATION 45 102 100
South West Water River Tamar MUTTON COVE PUMPING STATION 53 100 100
South West Water River Plym Via Sws ARNOLDS POINT PUMPING STATION 12 97 100
South West Water River Plym Via Sws LIPSON VALE 2 CSO 68 74 100
South West Water Stonehouse Creek 139 OUTLAND ROAD CSO 36 72 100
South West Water Pennycomequick Stream Via Sws BARN PARK ROAD CSO 66 69 77.8
South West Water Stonehouse Creek SEYMOUR PLACE CSO 22 68 100
South West Water Stonehouse Creek Via Sws PEVERELL PARK ROAD CSO 42 66 100
South West Water Plymouth Sound MILLBAY TANKS 11 42 100
South West Water River Plym Via Sws 178 BEAUMONT ROAD CSO 48 34 91.9
South West Water River Plym TREFIUS PARK COMBINED SEWER OVERFLO 52 32 100
South West Water River Plym Via Sws JEPHSON ROAD CSO 20 25 99.5
South West Water River Plym Estuary JETTY PUMPING STATION 10 24 100
South West Water Stonehouse Creek Via Sws WILTON ROAD CSO 31 23 100
South West Water River Plym Via Sws FARRINGDON ROAD CSO 16 21 100
South West Water Plymouth Sound BARBICAN (SUTTON HARBOUR) TANKS 5 15 100
South West Water River Plym Via Sws 1 EDNA TERRACE CSO 11 15 100
South West Water River Tamar SALTASH ROAD SPS PLYMOUTH 20 11 100
South West Water River Plym Via Sws 78 BEAUMONT ROAD CSO 30 9 100
South West Water River Plym LANHYDROCK ROAD CSO 32 9 100
South West Water River Tamar EDINBURGH STREET (PS5) PS 20 9 100
South West Water River Tamar CORNWALL BEACH (PS3) 3 8 100
South West Water River Plym Via Sws SEYMOUR AVENUE/BEAUMONT RD CSO 22 8 100
South West Water River Plym OPP 44 CARMARTHEN ROAD CSO 17 6 100
South West Water Stonehouse Creek Via Sws MILL BRIDGE CSO 11 6 88.8
South West Water Leigham Mill Stream HARLECH CLOSE CSO 12 5 100
South West Water River Plym Via Sws CAVENDISH ROAD CSO 16 5 100
South West Water River Plym Via Sws SEYMOUR AVENUE/SALISBURY RD CSO 18 4 100
South West Water Weston Mill Lake CAMELS HEAD WWTW 2 3 98.6
South West Water Plymouth Sound WEST HOE TUNNEL SHAFT 5B.2 4 2 100
South West Water Plymouth Sound Via Sws PENNYCOMEQUICK ROUNDABOUT CSO 10 2 100
South West Water Plymouth Sound POTTERY QUAY PUMPING STATION 2 1 100
South West Water Hamoaze MOON COVE CSO 2 1 82
South West Water Millbay Docks Via Sws TRACEY COURT CSO 2 1 99.4
South West Water Stonehouse Creek Via Sws VICTORIA PARK CSO 3 1 100
South West Water River Plym Via Sws 45 CRAVEN AVENUE CSO 3 1 100
South West Water River Plym Via Sws LAIRA AVENUE CSO 1 1 100
South West Water Stonehouse Creek Via Sws DALE ROAD CSO 3 0 58.6
South West Water River Plym OLD LAIRA ROAD JUNCTION CSO 2 0 100
South West Water River Plym HEATHFIELD ROAD CSO 2 0 100
South West Water Millbay Dock Via Sws-Estuarine ETON PLACE CSO 1 0 100
South West Water River Tamar DOCKYARD NO.1 0 0 100
South West Water River Plym Via Sws 28 FINCH CLOSE CSO 0 0 83.6
South West Water Stonehouse Creek ALLOTMENT CSO 0 0 100
South West Water River Plym GWYN ROAD COMBINED SEWER OVERFLOW 0 0 100
South West Water Cattewater 20 COMMERCIAL ROAD 0 0 100
South West Water Pennycomequick Stream Via Sws 2 BICKHAM PARK ROAD CSO 0 0 100
South West Water Plymouth Sound WEST HOE PUMPING STATION 0 0 100
South West Water River Plym EMBANKMENT ROAD PUMPING STATION 0 0 100
South West Water Hamoaze MORICE YARD CSO 0 0 100
South West Water Stone House Creek Via Sws PENNYCOMEQUICK HILL CSO 0 0 100
South West Water River Plym MARSH MILLS PUMPING STATION 0 0 100
South West Water Plymouth Sound 20 COMMERCIAL ROAD 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.

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