Plymouth Sutton and Devonport

Polluted by sewage 1,796 times in 2024 lasting 9,489 hours - That's 1.1 years!

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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✔ means we have experimental daily data since 2023

Live data for Plymouth Sutton and Devonport in 2025

So far this year (as of Apr 23, 2025, 6:15 AM) there has been 3,039 hours of sewage overflows - that's 0.35 years!

Totals for Plymouth Sutton and Devonport in 2024

53 Sites polluted by South West Water
1,796 sewage dumps
9,489 hours duration
That's 1.1 years! On average 4.9 times a day

Change Over Time

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Constituencies near Plymouth Sutton and Devonport

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Plymouth Sutton and Devonport, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online
Monitoring Offline
Polluting
Potentially Polluting
Unknown
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Pollution Summary 2024

Here are all the reported sewage overflow totals for Plymouth Sutton and Devonport in 2024. 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 all the declared CSOs appeared to have monitoring enabled for more than 50% of the year

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
South West Water Weston Mill Lake CAMELS HEAD WWTW 163 2,328 100
South West Water Leigham Mill Stream EFFORD MARSH CSO 110 2,130 100
South West Water Plymouth Sound/Plym Estuary PLYMOUTH CENTRAL STW 127 1,062 100
South West Water River Tamar PS-DY2, NORTH YARD, DEVONPORT 103 1,020 100
South West Water Plymouth Sound Via Sws CAMBRIDGE LANE COMBINED SEWER OF 91 464 90.3
South West Water River Plym Via Sws LAIRA PARK CSO 103 423 100
South West Water Sutton Harbour Via Sws 59 BRETONSIDE CSO 70 362 100
South West Water River Tamar DOCKYARD NO.3 PUMPING STATION 52 338 100
South West Water River Plym Via Sws ARNOLDS POINT PUMPING STATION 26 243 100
South West Water Plymouth Sound EASTERN KINGS PUMPING STATION 42 202 100
South West Water River Plym Via Sws LIPSON VALE 1 CSO 101 169 100
South West Water River Plym Via Sws PIKE ROAD COMBINED SEWER OVERFLOW 83 163 100
South West Water River Plym Via Sws LIPSON VALE 2 CSO 59 66 100
South West Water River Tamar MUTTON COVE PUMPING STATION 39 63 100
South West Water Pennycomequick Stream Via Sws BARN PARK ROAD CSO 70 59 91.4
South West Water Plymouth Sound MILLBAY TANKS 10 41 100
South West Water Stonehouse Creek Via Sws WILTON ROAD CSO 48 39 100
South West Water River Plym TREFIUS PARK COMBINED SEWER OVERFLO 51 29 100
South West Water River Plym Via Sws 178 BEAUMONT ROAD CSO 47 28 100
South West Water River Plym Estuary JETTY PUMPING STATION 13 25 100
South West Water Plymouth Sound OCEAN COURT PUMPING STATION 12 20 61.6
South West Water River Tamar SALTASH ROAD SPS PLYMOUTH 34 20 100
South West Water Stonehouse Creek Via Sws CENTRAL PARK CSO 18 19 93.9
South West Water Plymouth Sound 20 COMMERCIAL ROAD 8 17 100
South West Water River Plym Via Sws JEPHSON ROAD CSO 18 15 100
South West Water River Plym Via Sws FARRINGDON ROAD CSO 16 15 100
South West Water Stonehouse Creek 139 OUTLAND ROAD CSO 27 12 73.9
South West Water Stonehouse Creek Via Sws PEVERELL PARK ROAD CSO 26 11 100
South West Water River Plym Via Sws 1 EDNA TERRACE CSO 14 10 91.1
South West Water River Plym Via Sws 78 BEAUMONT ROAD CSO 23 9 100
South West Water Stonehouse Creek SEYMOUR PLACE CSO 18 9 99.2
South West Water River Plym Via Sws SEYMOUR AVENUE/BEAUMONT RD CSO 16 8 99.9
South West Water River Plym OPP 44 CARMARTHEN ROAD CSO 33 7 96.5
South West Water River Plym R/O GARAGES LANHYDROCK ROAD CSO 28 7 100
South West Water Leigham Mill Stream HARLECH CLOSE CSO 12 5 100
South West Water Stonehouse Creek Via Sws MILL BRIDGE CSO 10 5 100
South West Water Plymouth Sound BARBICAN (SUTTON HARBOUR) TANKS 3 5 96.7
South West Water River Tamar EDINBURGH STREET (PS5) PS 9 5 100
South West Water River Plym Via Sws SEYMOUR AVENUE/SALISBURY RD CSO 16 4 100
South West Water River Plym Via Sws CAVENDISH ROAD CSO 13 3 100
South West Water Weston Mill Lake CAMELS HEAD WWTW 4 2 100
South West Water Plymouth Sound Via Sws PENNYCOMEQUICK ROUNDABOUT CSO 8 2 100
South West Water Plymouth Sound WEST HOE TUNNEL SHAFT 5B.2 4 1 100
South West Water Stonehouse Creek Via Sws PARADISE ROAD (GRAVEYARD) CSO 1 0 96.3
South West Water Stonehouse Creek Via Sws DALE ROAD CSO 5 0 93
South West Water River Tamar DOCKYARD NO.1 1 0 100
South West Water River Plym Via Sws 45 CRAVEN AVENUE CSO 3 0 100
South West Water River Plym HEATHFIELD ROAD CSO 1 0 100
South West Water River Plym GWYN ROAD COMBINED SEWER OVERFLOW 1 0 100
South West Water Stonehouse Creek Via Sws VICTORIA PARK CSO 2 0 100
South West Water Millbay Docks Via Sws TRACEY COURT CSO 2 0 100
South West Water Millbay Dock Via Sws-Estuarine ETON PLACE CSO 1 0 100
South West Water River Plym OLD LAIRA ROAD JUNCTION CSO 1 0 100
South West Water Stone House Creek Via Sws PENNYCOMEQUICK HILL CSO 0 0 100
South West Water River Plym Via Sws LAIRA AVENUE CSO 0 0 100
South West Water Hamoaze MOON COVE CSO 0 0 100
South West Water River Plym EMBANKMENT ROAD PUMPING STATION 0 0 100
South West Water Cattewater 20 COMMERCIAL ROAD 0 0 100
South West Water Plymouth Sound WEST HOE PUMPING STATION 0 0 100
South West Water Hamoaze MORICE YARD CSO 0 0 91.9
South West Water River Plym Via Sws 28 FINCH CLOSE CSO 0 0 93.6
South West Water River Plym MARSH MILLS PUMPING STATION 0 0 100
South West Water Stonehouse Creek ALLOTMENT CSO 0 0 94.5
South West Water River Tamar CORNWALL BEACH (PS3) 0 0 100
South West Water Plymouth Sound POTTERY QUAY PUMPING STATION 0 0 100
South West Water Pennycomequick Stream Via Sws 2 BICKHAM PARK ROAD CSO 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.