Plymouth Sutton and Devonport - Live Sewage

Polluted by sewage 4,948 hours in 2026 , monitoring offline 5,935 hours , potential overflows 2,029 hours so far..

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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 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.

Totals for Plymouth Sutton and Devonport in 2026

Sewage4,948 hours
Monitoring offline5,935 hours
Potential pollution2,029 hours
Storm overflows128

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Constituencies near Plymouth Sutton and Devonport

Daily Data

Jan - 2,248 hours , 785 potential
Feb - 1,499 hours , 234 potential
Mar - 110 hours , 3 potential
Apr - 5 hours , 760 offline
May - 178 hours , 558 potential
Jun - 0 hours , 134 potential
Jul - 0 hours
Aug - 112 hours
Sept - 134 hours , 123 potential
Oct - 558 hours , 132 potential
Nov - 100 hours , 56 potential
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
South West Water CENTRAL STW SHAFT 16 SPST_PSCSOEO_PLYMOU Plymouth Sound/Plym Estuary 104 1,021h 19m 868 h
South West Water CAMELS HEAD STW_SSO_PLYMOUTH Weston Mill Lake 37 730h 58m -
South West Water CAMELS HEAD STW_SO_PLYMOUTH Weston Mill Lake 50 366h 35m -
South West Water SEYMOUR PLACE_CSO_PLYMOUTH Stonehouse Creek 22 317h 29m -
South West Water EFFORD MARSH_CSO_PLYMOUTH Leigham Mill Stream 39 247h 42m -
South West Water FIELD O/S XX LAIRA PARK GDN_CSO_PLYMOUTH River Plym Via Sws 57 247h 29m -
South West Water POTTERY QUAY SPS_PSCSOEO_PLYMOUTH Plymouth Sound 40 204h 25m -
South West Water EASTERN KINGS SPS_PSCSOEO_PLYMOUTH Plymouth Sound 36 202h 41m -
South West Water RD OUTSIDE XXX PIKE RD_CSO_PLYMOUTH River Plym Via Sws 73 198h 12m 41 h
South West Water ARNOLDS POINT SPS_PSCSOEO_PLYMOUTH River Plym Via Sws 14 157h 48m -
South West Water BARN PARK ROAD_CSO_PLYMOUTH Pennycomequick Stream Via Sws 42 140h 26m 219 h
South West Water CAMBRIDGE LANE_CSO_PLYMOUTH Plymouth Sound Via Sws 48 128h 9m 56 h
South West Water LIPSON VALE 1_CSO_PLYMOUTH River Plym Via Sws 54 114h 21m -
South West Water 59 BRETONSIDE_CSO_PLYMOUTH Sutton Harbour Via Sws 22 107h 18m 978 h
South West Water DOCKYARD No3 SPS_PSCSOEO_PLYMOUTH River Tamar 21 91h 36m -
South West Water CATTEDOWN ROAD SPS_PSCSOEO_PLYMOUTH Plymouth Sound 21 84h 16m -
South West Water MILBAY STORAGE TANK_CSOEO_PLYMOUTH Plymouth Sound 8 77h 2m -
South West Water OCEAN COURT SPS_PSCSOEO_PLYMOUTH Plymouth Sound 25 52h 35m -
South West Water LIPSON VALE 2_CSO_PLYMOUTH River Plym Via Sws 33 51h 47m 970 h
South West Water PEVERELL PARK ROAD_CSO_PLYMOUTH Stonehouse Creek Via Sws 15 48h 34m -
South West Water DOCKYARD No2 SPS_PSCSOEO_PLYMOUTH River Tamar 5 47h 41m -
South West Water COMMERCIAL RD_CSO_PLYMOUTH Plymouth Sound 22 46h 16m 230 h
South West Water PARADISE RD GRAVEYARD_CSO_PLYMOUTH Stonehouse Creek Via Sws 42 44h 6m 449 h
South West Water BARBICAN TANKS_CSOEO_PLYMOUTH Plymouth Sound 4 32h 26m -
South West Water XX JEPHSON RD_CSO_PLYMOUTH River Plym Via Sws 12 22h 20m -
South West Water LAIRA AV_CSO_PLYMOUTH River Plym Via Sws 3 18h 23m -
South West Water 178 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 22 17h 31m -
South West Water X FARINGDON ROAD_CSO_PLYMOUTH River Plym Via Sws 11 16h 48m -
South West Water EDINBURGH STREET SPS_PSCSOEO_PLYMOUTH River Tamar 9 14h 34m -
South West Water S/O ENTRY 1 EDNA TERRACE_CSO_PLYMOUTH River Plym Via Sws 9 12h -
South West Water SALTASH ROAD SPS_PSCSOEO_PLYMOUTH River Tamar 8 10h 23m -
South West Water TREFUSIS PARK_CSO_PLYMOUTH River Plym 13 10h 18m -
South West Water WILTON RD/ VALLETORT RD_CSO_PLYMOUTH Stonehouse Creek Via Sws 12 10h 11m -
South West Water MUTTON COVE SPS_PSCSOEO_PLYMOUTH River Tamar 7 8h 56m 723 h
South West Water NORTH PROSPECT_CSO_PLYMOUTH Weston Mill Lake 4 8h 17m -
South West Water WEST HOE TANKS_CSOEO_PLYMOUTH Plymouth Sound 4 5h 22m -
South West Water HARLECH CLOSE_CSO_PLYMOUTH Leigham Mill Stream 11 4h 58m -
South West Water XXX OUTLAND ROAD_CSO_PLYMOUTH Stonehouse Creek 9 4h 26m -
South West Water CORNWALL BEACH SPS_PSCSOEO_PLYMOUTH River Tamar 2 3h 59m -
South West Water MILLBRIDGE_CSO_PLYMOUTH Stonehouse Creek Via Sws 3 3h 52m -
South West Water 78 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 9 2h 50m -
South West Water DOCKYARD No1 SPS_PSCSOEO_PLYMOUTH River Tamar 2 1h 50m -
South West Water R/O GARAGES LANHYDROCK RD_CSO_PLYMOUTH River Plym 4 1h 49m -
South West Water SEYMOUR AVENUE/SALISBURY RD_CSO_PLYMOUTH River Plym Via Sws 3 1h 46m -
South West Water CAVENDISH RD_CSO_PLYMOUTH River Plym Via Sws 5 1h 40m -
South West Water SEYMOUR AVENUE/BEAUMONT RD_CSO_PLYMOUTH River Plym Via Sws 5 1h 29m -
South West Water CENTRAL PARK_CSO_PLYMOUTH Stonehouse Creek Via Sws 3 1h 24m 2,550 h
South West Water DALE ROAD/EAST PARK AVENUE_CSO_PLYMOUTH Stonehouse Creek Via Sws 4 1h 18m 720 h
South West Water EMBANKMENT ROAD_PSCSOEO_PLYMOUTH River Plym 1 0h 31m -
South West Water 45 CRAVEN AVENUE_CSO_PLYMOUTH River Plym Via Sws 1 0h 6m -
South West Water 44 CARMARTHEN RD_CSO_PLYMOUTH River Plym 1 0h 6m -
South West Water NORTH PROSPECT_CSO_PLYMOUTH Weston Mill Lake 0 0h -
South West Water TRACEY CT/WESTERN APPR_CSO_PLYMOUTH Millbay Docks Via Sws 0 0h -
South West Water EDINBURGH STREET SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water RD OUTSIDE XXX PIKE RD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water SEYMOUR AVENUE/SALISBURY RD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water COMMERCIAL RD_CSO_PLYMOUTH Plymouth Sound 0 0h -
South West Water OCEAN COURT SPS_PSCSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water VICTORIA PARK UPPER_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water 28 FINCH CLOSE_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water LIPSON VALE 2_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water BARBICAN TANKS_CSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water ETON PLACE_CSO_PLYMOUTH Millbay Dock Via Sws-Estuarine 0 0h -
South West Water S/O ENTRY 1 EDNA TERRACE_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water XX JEPHSON RD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water BARN PARK ROAD_CSO_PLYMOUTH Pennycomequick Stream Via Sws 0 0h -
South West Water R/O GARAGES LANHYDROCK RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water XXX OUTLAND ROAD_CSO_PLYMOUTH Stonehouse Creek 0 0h -
South West Water 78 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water 45 CRAVEN AVENUE_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water EASTERN KINGS SPS_PSCSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water VICTORIA PARK UPPER_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water DOCKYARD No1 SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water 28 FINCH CLOSE_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water PLYMOUTH ROAD/EMBANKMENT RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water DALE ROAD/EAST PARK AVENUE_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water CAMELS HEAD STW_SSO_PLYMOUTH Weston Mill Lake 0 0h -
South West Water MILBAY STORAGE TANK_CSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water DOCKYARD No3 SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water EFFORD MARSH_CSO_PLYMOUTH Leigham Mill Stream 0 0h -
South West Water WILTON RD/ VALLETORT RD_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water ALLOTMENT OPP BICKHAM PK RD_CSO_PLYMOUTH Stonehouse Creek 0 0h -
South West Water ETON PLACE_CSO_PLYMOUTH Millbay Dock Via Sws-Estuarine 0 0h 97 h
South West Water FIELD O/S XX LAIRA PARK GDN_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water PARADISE RD GRAVEYARD_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water PENNYCOMEQUICK ROUNDABOUT_CSO_PLYMOUTH Plymouth Sound Via Sws 0 0h -
South West Water PENNYCOMEQUICK HILL_CSO_PLYMOUTH Stone House Creek Via Sws 0 0h -
South West Water PENNYCOMEQUICK HILL_CSO_PLYMOUTH Stone House Creek Via Sws 0 0h 58 h
South West Water JETTY_PSCSOEO_PLYMOUTH River Plym Estuary 0 0h -
South West Water LAIRA AV_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water TREFUSIS PARK_CSO_PLYMOUTH River Plym 0 0h -
South West Water CATTEDOWN ROAD SPS_PSCSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water CENTRAL PARK_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water CENTRAL STW SHAFT 16 SPST_PSCSOEO_PLYMOU Plymouth Sound/Plym Estuary 0 0h -
South West Water COMMERCIAL RD/PLACE_CSO_PLYMOUTH Cattewater 0 0h -
South West Water EMBANKMENT ROAD_PSCSOEO_PLYMOUTH River Plym 0 0h -
South West Water PEVERELL PARK ROAD_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water DOCKYARD No2 SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water PENNYCOMEQUICK ROUNDABOUT_CSO_PLYMOUTH Plymouth Sound Via Sws 0 0h -
South West Water MOON COVE NORTH YARD_CSO_PLYMOUTH Hamoaze 0 0h -
South West Water MORICE YARD_CSO_PLYMOUTH Hamoaze 0 0h -
South West Water HARLECH CLOSE_CSO_PLYMOUTH Leigham Mill Stream 0 0h -
South West Water JETTY_PSCSOEO_PLYMOUTH River Plym Estuary 0 0h -
South West Water SEYMOUR PLACE_CSO_PLYMOUTH Stonehouse Creek 0 0h -
South West Water CAMBRIDGE LANE_CSO_PLYMOUTH Plymouth Sound Via Sws 0 0h -
South West Water X FARINGDON ROAD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water ARNOLDS POINT SPS_PSCSOEO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water 44 CARMARTHEN RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water 178 BEAUMONT ROAD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water CAMELS HEAD STW_SO_PLYMOUTH Weston Mill Lake 0 0h -
South West Water PLYMOUTH ROAD/EMBANKMENT RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water MILLBRIDGE_CSO_PLYMOUTH Stonehouse Creek Via Sws 0 0h -
South West Water MOON COVE NORTH YARD_CSO_PLYMOUTH Hamoaze 0 0h -
South West Water HEATHFIELD RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water SALTASH ROAD SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water COMMERCIAL RD/PLACE_CSO_PLYMOUTH Cattewater 0 0h -
South West Water WEST HOE TANKS_CSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water HEATHFIELD RD_CSO_PLYMOUTH River Plym 0 0h -
South West Water CORNWALL BEACH SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water SEYMOUR AVENUE/BEAUMONT RD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water 59 BRETONSIDE_CSO_PLYMOUTH Sutton Harbour Via Sws 0 0h -
South West Water MUTTON COVE SPS_PSCSOEO_PLYMOUTH River Tamar 0 0h -
South West Water ALLOTMENT OPP BICKHAM PK RD_CSO_PLYMOUTH Stonehouse Creek 0 0h -
South West Water POTTERY QUAY SPS_PSCSOEO_PLYMOUTH Plymouth Sound 0 0h -
South West Water CAVENDISH RD_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water MORICE YARD_CSO_PLYMOUTH Hamoaze 0 0h -
South West Water LIPSON VALE 1_CSO_PLYMOUTH River Plym Via Sws 0 0h -
South West Water GWYN ROAD_CSO_PLYMOUTH River Plym 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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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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