Plymouth Sutton and Devonport - 2025 Sewage

Polluted by sewage 9,440 hours in 2025 - That's 1.09 years

© 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 Plymouth Sutton and Devonport for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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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.

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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
South West Water 59 BRETONSIDE_CSO_PLYMOUTH Sutton Harbour Via Sws 49 993 h 15m 41.38
South West Water EASTERN KINGS SPS_PSCSOEO_PLYMOUTH Plymouth Sound 50 668 h 31m 27.83
South West Water CENTRAL STW SHAFT 16 SPST_PSCSOEO_PLYMOU Plymouth Sound/Plym Estuary 73 599 h 27m 24.96
South West Water CAMELS HEAD STW_SSO_PLYMOUTH Weston Mill Lake 29 587 h 24m 24.46
South West Water CAMELS HEAD STW_SO_PLYMOUTH Weston Mill Lake 29 556 h 30m 23.17
South West Water CAMELS HEAD STW_SSO_PLYMOUTH Weston Mill Lake 33 552 h 34m 23
South West Water CAMELS HEAD STW_SO_PLYMOUTH Weston Mill Lake 34 512 h 28m 21.33
South West Water CENTRAL STW SHAFT 16 SPST_PSCSOEO_PLYMOU Plymouth Sound/Plym Estuary 38 449 h 38m 18.71
South West Water CAMBRIDGE LANE_CSO_PLYMOUTH Plymouth Sound Via Sws 50 422 h 38m 17.58
South West Water EFFORD MARSH_CSO_PLYMOUTH Leigham Mill Stream 39 408 h 42m 17
South West Water EFFORD MARSH_CSO_PLYMOUTH Leigham Mill Stream 21 310 h 25m 12.92
South West Water DOCKYARD No2 SPS_PSCSOEO_PLYMOUTH River Tamar 26 186 h 20m 7.75
South West Water DOCKYARD No3 SPS_PSCSOEO_PLYMOUTH River Tamar 26 185 h 36m 7.71
South West Water 59 BRETONSIDE_CSO_PLYMOUTH Sutton Harbour Via Sws 38 181 h 25m 7.54
South West Water DOCKYARD No3 SPS_PSCSOEO_PLYMOUTH River Tamar 20 152 h 20m 6.33
South West Water FIELD O/S XX LAIRA PARK GDN_CSO_PLYMOUTH River Plym Via Sws 29 146 h 20m 6.08
South West Water POTTERY QUAY SPS_PSCSOEO_PLYMOUTH Plymouth Sound 21 139 h 7m 5.79
South West Water ARNOLDS POINT SPS_PSCSOEO_PLYMOUTH River Plym Via Sws 13 127 h 27m 5.29
South West Water EASTERN KINGS SPS_PSCSOEO_PLYMOUTH Plymouth Sound 19 122 h 43m 5.08
South West Water FIELD O/S XX LAIRA PARK GDN_CSO_PLYMOUTH River Plym Via Sws 49 116 h 37m 4.83
South West Water CENTRAL PARK_CSO_PLYMOUTH Stonehouse Creek Via Sws 8 109 h 18m 4.54
South West Water RD OUTSIDE XXX PIKE RD_CSO_PLYMOUTH River Plym Via Sws 31 92 h 34m 3.83
South West Water SEYMOUR PLACE_CSO_PLYMOUTH Stonehouse Creek 14 88 h 23m 3.67
South West Water PEVERELL PARK ROAD_CSO_PLYMOUTH Stonehouse Creek Via Sws 12 84 h 48m 3.5
South West Water PEVERELL PARK ROAD_CSO_PLYMOUTH Stonehouse Creek Via Sws 13 79 h 53m 3.29
South West Water LIPSON VALE 1_CSO_PLYMOUTH River Plym Via Sws 52 76 h 8m 3.17
South West Water LIPSON VALE 1_CSO_PLYMOUTH River Plym Via Sws 25 72 h 47m 3
South West Water RD OUTSIDE XXX PIKE RD_CSO_PLYMOUTH River Plym Via Sws 67 70 h 20m 2.92
South West Water CENTRAL PARK_CSO_PLYMOUTH Stonehouse Creek Via Sws 10 68 h 33m 2.83
South West Water PENNYCOMEQUICK HILL_CSO_PLYMOUTH Stone House Creek Via Sws 4 68 h 21m 2.83
South West Water XX JEPHSON RD_CSO_PLYMOUTH River Plym Via Sws 10 66 h 37m 2.75
South West Water CATTEDOWN ROAD SPS_PSCSOEO_PLYMOUTH Plymouth Sound 24 65 h 32m 2.71
South West Water CATTEDOWN ROAD SPS_PSCSOEO_PLYMOUTH Plymouth Sound 12 61 h 47m 2.54
South West Water CAMBRIDGE LANE_CSO_PLYMOUTH Plymouth Sound Via Sws 21 54 h 51m 2.25
South West Water MUTTON COVE SPS_PSCSOEO_PLYMOUTH River Tamar 26 50 h 23m 2.08
South West Water MILBAY STORAGE TANK_CSOEO_PLYMOUTH Plymouth Sound 6 50 h 8m 2.08
South West Water POTTERY QUAY SPS_PSCSOEO_PLYMOUTH Plymouth Sound 18 49 h 55m 2.04
South West Water OCEAN COURT SPS_PSCSOEO_PLYMOUTH Plymouth Sound 14 47 h 46m 1.96
South West Water ARNOLDS POINT SPS_PSCSOEO_PLYMOUTH River Plym Via Sws 5 44 h 35m 1.83
South West Water BARN PARK ROAD_CSO_PLYMOUTH Pennycomequick Stream Via Sws 28 41 h 3m 1.71
South West Water SEYMOUR PLACE_CSO_PLYMOUTH Stonehouse Creek 10 40 h 14m 1.67
South West Water BARN PARK ROAD_CSO_PLYMOUTH Pennycomequick Stream Via Sws 20 39 h 2m 1.62
South West Water LIPSON VALE 2_CSO_PLYMOUTH River Plym Via Sws 16 37 h 47m 1.54
South West Water PARADISE RD GRAVEYARD_CSO_PLYMOUTH Stonehouse Creek Via Sws 18 36 h 11m 1.5
South West Water COMMERCIAL RD_CSO_PLYMOUTH Plymouth Sound 17 34 h 9m 1.42
South West Water MUTTON COVE SPS_PSCSOEO_PLYMOUTH River Tamar 15 32 h 21m 1.33
South West Water OCEAN COURT SPS_PSCSOEO_PLYMOUTH Plymouth Sound 23 32 h 3m 1.33
South West Water LIPSON VALE 2_CSO_PLYMOUTH River Plym Via Sws 26 31 h 6m 1.29
South West Water COMMERCIAL RD_CSO_PLYMOUTH Plymouth Sound 9 23 h 24m 0.96
South West Water WILTON RD/ VALLETORT RD_CSO_PLYMOUTH Stonehouse Creek Via Sws 27 22 h 49m 0.92
South West Water XXX OUTLAND ROAD_CSO_PLYMOUTH Stonehouse Creek 8 17 h 51m 0.71
South West Water BARBICAN TANKS_CSOEO_PLYMOUTH Plymouth Sound 4 16 h 2m 0.67
South West Water EDINBURGH STREET SPS_PSCSOEO_PLYMOUTH River Tamar 9 15 h 32m 0.62
South West Water MILBAY STORAGE TANK_CSOEO_PLYMOUTH Plymouth Sound 6 14 h 53m 0.58
South West Water 178 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 24 14 h 37m 0.58
South West Water PARADISE RD GRAVEYARD_CSO_PLYMOUTH Stonehouse Creek Via Sws 15 14 h 15m 0.58
South West Water LAIRA AV_CSO_PLYMOUTH River Plym Via Sws 6 13 h 31m 0.54
South West Water NORTH PROSPECT_CSO_PLYMOUTH Weston Mill Lake 4 12 h 44m 0.5
South West Water 178 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 12 12 h 9m 0.5
South West Water TREFUSIS PARK_CSO_PLYMOUTH River Plym 12 11 h 38m 0.46
South West Water X FARINGDON ROAD_CSO_PLYMOUTH River Plym Via Sws 6 11 h 16m 0.46
South West Water XX JEPHSON RD_CSO_PLYMOUTH River Plym Via Sws 13 10 h 41m 0.42
South West Water SALTASH ROAD SPS_PSCSOEO_PLYMOUTH River Tamar 13 10 h 41m 0.42
South West Water WILTON RD/ VALLETORT RD_CSO_PLYMOUTH Stonehouse Creek Via Sws 5 10 h 21m 0.42
South West Water S/O ENTRY 1 EDNA TERRACE_CSO_PLYMOUTH River Plym Via Sws 5 9 h 57m 0.38
South West Water X FARINGDON ROAD_CSO_PLYMOUTH River Plym Via Sws 9 9 h 56m 0.38
South West Water TREFUSIS PARK_CSO_PLYMOUTH River Plym 16 9 h 48m 0.38
South West Water HARLECH CLOSE_CSO_PLYMOUTH Leigham Mill Stream 10 9 h 45m 0.38
South West Water SALTASH ROAD SPS_PSCSOEO_PLYMOUTH River Tamar 8 9 h 45m 0.38
South West Water S/O ENTRY 1 EDNA TERRACE_CSO_PLYMOUTH River Plym Via Sws 7 7 h 15m 0.29
South West Water EDINBURGH STREET SPS_PSCSOEO_PLYMOUTH River Tamar 10 6 h 55m 0.25
South West Water BARBICAN TANKS_CSOEO_PLYMOUTH Plymouth Sound 4 6 h 34m 0.25
South West Water 78 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 17 6 h 34m 0.25
South West Water MILLBRIDGE_CSO_PLYMOUTH Stonehouse Creek Via Sws 4 6 h 19m 0.25
South West Water CORNWALL BEACH SPS_PSCSOEO_PLYMOUTH River Tamar 1 6 h 15m 0.25
South West Water NORTH PROSPECT_CSO_PLYMOUTH Weston Mill Lake 6 5 h 28m 0.21
South West Water DALE ROAD/EAST PARK AVENUE_CSO_PLYMOUTH Stonehouse Creek Via Sws 7 5 h 23m 0.21
South West Water SEYMOUR AVENUE/BEAUMONT RD_CSO_PLYMOUTH River Plym Via Sws 11 5 h 15m 0.21
South West Water EMBANKMENT ROAD_PSCSOEO_PLYMOUTH River Plym 2 4 h 41m 0.17
South West Water HARLECH CLOSE_CSO_PLYMOUTH Leigham Mill Stream 8 4 h 20m 0.17
South West Water MILLBRIDGE_CSO_PLYMOUTH Stonehouse Creek Via Sws 4 4 h 0.17
South West Water JETTY_PSCSOEO_PLYMOUTH River Plym Estuary 3 3 h 59m 0.12
South West Water VICTORIA PARK UPPER_CSO_PLYMOUTH Stonehouse Creek Via Sws 3 3 h 48m 0.12
South West Water CAVENDISH RD_CSO_PLYMOUTH River Plym Via Sws 7 3 h 25m 0.12
South West Water PENNYCOMEQUICK ROUNDABOUT_CSO_PLYMOUTH Plymouth Sound Via Sws 3 3 h 23m 0.12
South West Water R/O GARAGES LANHYDROCK RD_CSO_PLYMOUTH River Plym 9 3 h 20m 0.12
South West Water SEYMOUR AVENUE/SALISBURY RD_CSO_PLYMOUTH River Plym Via Sws 10 3 h 17m 0.12
South West Water WEST HOE TANKS_CSOEO_PLYMOUTH Plymouth Sound 3 2 h 50m 0.08
South West Water XXX OUTLAND ROAD_CSO_PLYMOUTH Stonehouse Creek 7 2 h 44m 0.08
South West Water 44 CARMARTHEN RD_CSO_PLYMOUTH River Plym 11 2 h 31m 0.08
South West Water SEYMOUR AVENUE/BEAUMONT RD_CSO_PLYMOUTH River Plym Via Sws 4 1 h 57m 0.04
South West Water 45 CRAVEN AVENUE_CSO_PLYMOUTH River Plym Via Sws 3 1 h 46m 0.04
South West Water 28 FINCH CLOSE_CSO_PLYMOUTH River Plym Via Sws 3 1 h 43m 0.04
South West Water WEST HOE TANKS_CSOEO_PLYMOUTH Plymouth Sound 2 1 h 35m 0.04
South West Water CORNWALL BEACH SPS_PSCSOEO_PLYMOUTH River Tamar 2 0 h 58m 0
South West Water COMMERCIAL RD/PLACE_CSO_PLYMOUTH Cattewater 3 0 h 51m 0
South West Water R/O GARAGES LANHYDROCK RD_CSO_PLYMOUTH River Plym 3 0 h 44m 0
South West Water PLYMOUTH ROAD/EMBANKMENT RD_CSO_PLYMOUTH River Plym 3 0 h 44m 0
South West Water ETON PLACE_CSO_PLYMOUTH Millbay Dock Via Sws-Estuarine 2 0 h 40m 0
South West Water 78 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 2 0 h 35m 0
South West Water DOCKYARD No1 SPS_PSCSOEO_PLYMOUTH River Tamar 1 0 h 34m 0
South West Water HEATHFIELD RD_CSO_PLYMOUTH River Plym 1 0 h 33m 0
South West Water MORICE YARD_CSO_PLYMOUTH Hamoaze 1 0 h 30m 0
South West Water CAVENDISH RD_CSO_PLYMOUTH River Plym Via Sws 1 0 h 17m 0
South West Water MOON COVE NORTH YARD_CSO_PLYMOUTH Hamoaze 1 0 h 14m 0
South West Water SEYMOUR AVENUE/SALISBURY RD_CSO_PLYMOUTH River Plym Via Sws 1 0 h 8m 0
South West Water DALE ROAD/EAST PARK AVENUE_CSO_PLYMOUTH Stonehouse Creek Via Sws 1 0 h 3m 0
South West Water PENNYCOMEQUICK ROUNDABOUT_CSO_PLYMOUTH Plymouth Sound Via Sws 0 0 h 0
South West Water DOCKYARD No1 SPS_PSCSOEO_PLYMOUTH River Tamar 0 0 h 0
South West Water ALLOTMENT OPP BICKHAM PK RD_CSO_PLYMOUTH Stonehouse Creek 0 0 h 0
South West Water COMMERCIAL RD/PLACE_CSO_PLYMOUTH Cattewater 0 0 h 0
South West Water PENNYCOMEQUICK HILL_CSO_PLYMOUTH Stone House Creek Via Sws 0 0 h 0
South West Water 28 FINCH CLOSE_CSO_PLYMOUTH River Plym Via Sws 0 0 h 0
South West Water DOCKYARD No2 SPS_PSCSOEO_PLYMOUTH River Tamar 0 0 h 0
South West Water ALLOTMENT OPP BICKHAM PK RD_CSO_PLYMOUTH Stonehouse Creek 0 0 h 0
South West Water MORICE YARD_CSO_PLYMOUTH Hamoaze 0 0 h 0
South West Water ETON PLACE_CSO_PLYMOUTH Millbay Dock Via Sws-Estuarine 0 0 h 0
South West Water 44 CARMARTHEN RD_CSO_PLYMOUTH River Plym 0 0 h 0
South West Water TRACEY CT/WESTERN APPR_CSO_PLYMOUTH Millbay Docks Via Sws 0 0 h 0
South West Water 45 CRAVEN AVENUE_CSO_PLYMOUTH River Plym Via Sws 0 0 h 0
South West Water PLYMOUTH ROAD/EMBANKMENT RD_CSO_PLYMOUTH River Plym 0 0 h 0
South West Water LAIRA AV_CSO_PLYMOUTH River Plym Via Sws 0 0 h 0
South West Water JETTY_PSCSOEO_PLYMOUTH River Plym Estuary 0 0 h 0
South West Water EMBANKMENT ROAD_PSCSOEO_PLYMOUTH River Plym 0 0 h 0
South West Water VICTORIA PARK UPPER_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0 h 0
South West Water MOON COVE NORTH YARD_CSO_PLYMOUTH Hamoaze 0 0 h 0
South West Water HEATHFIELD RD_CSO_PLYMOUTH River Plym 0 0 h 0

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.

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