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South East Cornwall - 2025 Sewage

Polluted by sewage 42,180 hours in 2025 - That's 4.88 years , monitoring offline 3,195 hours , potential overflows 319 hours

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

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in South East Cornwall 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.

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.

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Constituencies near South East Cornwall

Daily Data

Jan - 6,263 hours , 4 potential
Feb - 3,609 hours , 204 offline
Mar - 518 hours , 40 potential
Apr - 1,085 hours
May - 99 hours , 0 potential
Jun - 404 hours , 1 potential
Jul - 52 hours , 19 offline
Aug - 280 hours , 32 potential
Sept - 713 hours , 503 offline
Oct - 1,083 hours , 666 offline
Nov - 12,788 hours , 25 potential
Dec - 15,266 hours , 215 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 METHERELL STW_SSO_METHERELL River Tamar 86 1,790 h 11m 463 h
South West Water ST NEOT STW_SO_ST NEOT St Neot River 133 1,413 h 47m -
South West Water GOLBERDON STW_SO_GOLBERDON River Lynher 95 1,224 h 9m -
South West Water COULSONS PARK SPST_PSCSOEO_LOSTWITHIEL River Fowey 74 1,211 h 59m -
South West Water ST NEOT STW_SO_ST NEOT St Neot River 55 1,177 h 39m -
South West Water ST DOMINICK STW_SO_CALLINGTON River Tamar Estuary 71 1,149 h 37m -
South West Water METHERELL STW_SSO_METHERELL River Tamar 53 1,130 h 37m -
South West Water MENHENIOT STW_SSO_MENHENIOT River Seaton 86 1,125 h 35m -
South West Water GOLBERDON STW_SO_GOLBERDON River Lynher 52 1,111 h 31m -
South West Water GUNNISLAKE STW_SSO_GUNNISLAKE River Tamar 88 1,079 h 8m -
South West Water ST NEOT SPS_PSCSOEO_LISKEARD River Loveny 50 1,075 h 29m -
South West Water COMMON MOOR STW_SO_COMMON MOOR River Fowey 54 1,067 h 23m -
South West Water ST DOMINICK STW_SO_CALLINGTON River Tamar Estuary 46 1,026 h 6m -
South West Water LANDRAKE STW_SO_LANDRAKE Landrake Stream 57 1,014 h 50m -
South West Water CALLINGTON STW_SSO_CALLINGTON Haye Valley Stream 57 971 h 7m -
South West Water ST NEOT SPS_PSCSOEO_LISKEARD River Loveny 54 948 h 5m -
South West Water PELYNT STW_SSO_PELYNT River Pol 50 923 h 11m -
South West Water LUXULYAN STW_SSO_ST AUSTELL Unknown 45 909 h 8m -
South West Water ST DOMINICK_PSCSOEO_SALTASH River Tamar 57 895 h 55m -
South West Water COULSONS PARK SPST_PSCSOEO_LOSTWITHIEL River Fowey 45 890 h 19m -
South West Water ST CLEER STW_SSO_LISKEARD Tremar Stream 38 770 h 59m -
South West Water TORPOINT STW_SO_TORPOINT St John'S Lake 56 770 h 42m -
South West Water LANDRAKE STW_SO_LANDRAKE Landrake Stream 35 740 h 49m -
South West Water ST DOMINICK_PSCSOEO_SALTASH River Tamar 40 722 h 19m -
South West Water CALLINGTON STW_SSO_CALLINGTON Haye Valley Stream 33 653 h 54m -
South West Water LUXULYAN STW_SSO_ST AUSTELL Unknown 38 630 h 18m 17 h
South West Water SEATON SPS_PSCSOEO_SEATON English Channel 34 623 h 34m -
South West Water CROWS NEST STW_SO_DARITE River Seaton 37 593 h 40m 193 h
South West Water CROWS NEST STW_SO_DARITE River Seaton 33 528 h 27m -
South West Water COMMON MOOR STW_SO_COMMON MOOR River Fowey 65 517 h 42m -
South West Water MILLBROOK STW_SSO_MILLBROOK Millbrook Lake 30 492 h 5m -
South West Water PELYNT STW_SSO_PELYNT River Pol 38 455 h 11m -
South West Water MENHENIOT STW_SSO_MENHENIOT River Seaton 44 450 h 55m 39 h
South West Water LODGEHILL STW_SSO_LISKEARD East Looe River 31 450 h 45m 136 h
South West Water SEATON SPS_PSCSOEO_SEATON English Channel 34 449 h 50m -
South West Water GUNNISLAKE STW_SSO_GUNNISLAKE River Tamar 31 426 h 31m -
South West Water PLAYING FIELDS_PSCSOEO_CALSTOCK River Tamar 31 426 h 22m -
South West Water HARROW BARROW STW_SO_CALLINGTON Unknown 29 424 h 27m -
South West Water BONE MILL SPS_PSCSOEO_LOOE Looe River 102 410 h 43m -
South West Water RILLA MILL STW_SO_RILLA MILL Unknown 26 380 h 15m -
South West Water LATCHLEY STW_SO_GUNNISLAKE River Tamar 25 374 h 52m -
South West Water GUNNISLAKE NO. 2_CSO_GUNNISLAKE River Tamar Via Sws 34 370 h 17m -
South West Water MILLBROOK STW_SSO_MILLBROOK Millbrook Lake 36 358 h 18m -
South West Water PILLATON STW_SSO_PILLATON River Lynher 22 345 h 17m -
South West Water THE SQUARE CAWSAND_PSCSOEO_CAWSAND Cawsand Bay Estaurine Via Sws 22 344 h 12m -
South West Water ST CLEER STW_SSO_LISKEARD Tremar Stream 27 324 h 23m -
South West Water GUNNISLAKE STW_SO_GUNNISLAKE River Tamar 28 319 h 19m -
South West Water HAYE ROAD_CSO_CALLINGTON Haye Valley Stream 31 316 h 51m -
South West Water TORPOINT STW_SO_TORPOINT St John'S Lake 22 286 h 29m 123 h
South West Water PLAYING FIELDS_PSCSOEO_CALSTOCK River Tamar 49 281 h 7m -
South West Water HATT STW_SSO_HATT River Lynher 20 277 h 31m -
South West Water DOBWALLS SPS_PSCSOEO_DOBWALLS Unnamed To West Looe Rivr 22 276 h 5m -
South West Water DOWNDERRY SPST_PSCSOEO_DOWNDERRY English Channel 18 274 h 35m 27 h
South West Water LODGEHILL STW_SSO_LISKEARD East Looe River 47 262 h 13m 144 h
South West Water CHILSWORTHY STW_SO_GUNNISLAKE River Tamar 30 257 h 16m -
South West Water MINIONS STW_SO_MINIONS River Seaton 34 234 h 38m -
South West Water LATCHLEY STW_SO_GUNNISLAKE River Tamar 17 226 h 28m 0 h
South West Water HARROW BARROW STW_SO_CALLINGTON Unknown 41 224 h 3m 4 h
South West Water BONE MILL SPS_PSCSOEO_LOOE Looe River 32 221 h 51m -
South West Water ELIOT DRIVE SPS_PSCSOEO_ST GERMANS Polbathic Lake 48 157 h 29m 95 h
South West Water FORDER MAIN No1 SPS_PSCSOEO_SALTASH River Lyner 14 154 h 47m -
South West Water RIVERVIEW No2 SPS_PSCSOEO_SALTASH Saltmill Creek 12 146 h 1m -
South West Water HAYE ROAD_CSO_CALLINGTON Haye Valley Stream 39 134 h 23m -
South West Water PENSILVA SPST_PSCSOEO_PENSILVA River Tiddy 14 126 h 1m -
South West Water MINIONS STW_SO_MINIONS River Seaton 57 119 h 30m -
South West Water PILLATON STW_SSO_PILLATON River Lynher 15 116 h 56m -
South West Water GUNNISLAKE STW_SO_GUNNISLAKE River Tamar 34 116 h 20m -
South West Water GUNNISLAKE NO. 2_CSO_GUNNISLAKE River Tamar Via Sws 44 113 h 25m -
South West Water ST MELLION_PSCSOEO_ST MELLION St Mellion Stream 13 102 h 10m -
South West Water MENHENIOT SPST_PSCSOEO_MENHENIOT River Seaton 10 98 h 15m -
South West Water PENSILVA SPST_PSCSOEO_PENSILVA River Tiddy 9 86 h 19m -
South West Water CARGREEN SPS_PSCSOEO_CARGREEN River Tamar 16 83 h 47m -
South West Water METHERELL STW_SO_METHERELL River Tamar 12 82 h 54m -
South West Water ANTONY S T SEPTNK_SO_ANTONY River Lynher Estuary 16 81 h 40m 40 h
South West Water RILLA MILL STW_SO_RILLA MILL Unknown 11 81 h 17m -
South West Water DULOE STW_SO_DULOE West Looe River 22 78 h 37m -
South West Water MARKET STREET SPS_PSCSOEO_KINGSAND Cawsand Bay 11 75 h 54m -
South West Water MACEY STEPS_CSO_TORPOINT Hamoaze 27 70 h 6m 179 h
South West Water HANNAFORE SPS_PSCSOEO_LOOE Looe Bay 42 69 h 5m -
South West Water RIVERVIEW No2 SPS_PSCSOEO_SALTASH Saltmill Creek 10 65 h 48m -
South West Water MACEY STEPS_CSO_TORPOINT Hamoaze 18 54 h 59m -
South West Water CHURCH SQUARE_CSO_MENHENIOT River Seaton 8 54 h 9m -
South West Water ANTONY S T SEPTNK_SO_ANTONY River Lynher Estuary 36 52 h 26m -
South West Water ADIT LANE_CSO_SALTASH Saltmill Creek 18 51 h 38m -
South West Water SUNGIRT LANE_CSO_LISKEARD East Looe River 13 47 h 33m -
South West Water CARGREEN SPS_PSCSOEO_CARGREEN River Tamar 20 45 h 51m -
South West Water CHILSWORTHY STW_SO_GUNNISLAKE River Tamar 19 45 h 27m -
South West Water COWDRAY CLOSE_CSO_SALTASH River Tamar Estuary 26 45 h 22m -
South West Water ST MELLION_PSCSOEO_ST MELLION St Mellion Stream 9 43 h 40m -
South West Water PORTWRINKLE SPST_PSCSOEO_PORTWRINKLE Whitsand Bay 9 43 h 30m -
South West Water HANNAFORE SPS_PSCSOEO_LOOE Looe Bay 18 43 h 7m -
South West Water FORDER MAIN No1 SPS_PSCSOEO_SALTASH River Lyner 10 40 h 33m -
South West Water SUNGIRT LANE_CSO_LISKEARD East Looe River 15 40 h 33m -
South West Water POLPERRO FINESCREEN STW_CSO_POLPERRO English Channel 28 39 h 1m -
South West Water THANKES PARK SPST_PSCSOEO_TORPOINT River Tamar 35 35 h 46m 863 h
South West Water PLAIDY SPS_PSCSOEO_LOOE Looe Bay 15 28 h 46m -
South West Water PLAIDY SPS_PSCSOEO_LOOE Looe Bay 27 27 h 17m -
South West Water HATT STW_SSO_HATT River Lynher 7 26 h 26m -
South West Water ADIT LANE_CSO_SALTASH Saltmill Creek 25 26 h 26m -
South West Water BULLER QUAY_CSO_LOOE Looe River 18 26 h 22m -
South West Water MARKET STREET SPS_PSCSO_KINGSAND Cawsand Bay 17 25 h 21m -
South West Water BULLER QUAY_CSO_LOOE Looe River 10 23 h 57m -
South West Water KELLY_PSCSOEO_CALSTOCK River Tamar 11 22 h 24m -
South West Water WIDEGATES STW_SO_LOOE River Seaton 13 21 h 41m -
South West Water TREDINNICK STW_SO_TREDINNICK Un-Named Watercourse 14 20 h 45m -
South West Water ROWING CLUB NO2_CSO_TORPOINT River Tamar 17 19 h 32m -
South West Water CHAPELDOWN SPST_PSCSOEO_TORPOINT Plymouth Sound 15 17 h 50m -
South West Water EAST TAPHOUSE STW_SO_EAST TAPHOUSE River Fowey 7 16 h 54m -
South West Water THANKES PARK SPST_PSCSOEO_TORPOINT River Tamar 7 16 h 13m 413 h
South West Water DOWNDERRY SPST_PSCSOEO_DOWNDERRY English Channel 14 14 h 45m -
South West Water LANREATH SPS_PSCSO_LANREATH Pont Pill 10 14 h 36m -
South West Water QUETHIOCK STW_SO_QUETHIOCK River Tiddy 13 14 h 24m -
South West Water CHICHESTER CRESCENT_CSO_SALTASH River Tamar Estuary 9 14 h 19m -
South West Water COOMBE ROAD_CSO_SALTASH River Tamar Estuary 7 14 h 6m -
South West Water TREDINNICK STW_SO_TREDINNICK Un-Named Watercourse 8 13 h 34m -
South West Water TREWIDLAND STW_SO_TREWIDLAND East Looe River 12 13 h 16m -
South West Water MARKET STREET SPS_PSCSOEO_KINGSAND Cawsand Bay 11 12 h 25m -
South West Water KELLY_PSCSOEO_CALSTOCK River Tamar 8 12 h 23m -
South West Water WATERSIDE No1 SPST_PSCSOEO_SALTASH River Tamar Estuary 5 12 h 19m -
South West Water ST JOHN S T SEPTNK_SO_ST JOHN St Johns Leat 22 12 h 8m -
South West Water ST JOHN S T SEPTNK_SO_ST JOHN St Johns Leat 10 12 h 5m 165 h
South West Water TREWIDLAND STW_SO_TREWIDLAND East Looe River 34 11 h 53m -
South West Water COOMBE ROAD_CSO_SALTASH River Tamar Estuary 2 11 h 8m -
South West Water WIDEGATES STW_SO_LOOE River Seaton 19 10 h 59m -
South West Water DOBWALLS SPS_PSCSOEO_DOBWALLS Unnamed To West Looe Rivr 5 10 h 34m -
South West Water THE SQUARE CAWSAND_PSCSOEO_CAWSAND Cawsand Bay Estaurine Via Sws 10 10 h 27m -
South West Water ELIOT DRIVE SPS_PSCSOEO_ST GERMANS Polbathic Lake 4 10 h -
South West Water CHICHESTER CRESCENT_CSO_SALTASH River Tamar Estuary 5 9 h 55m 25 h
South West Water LERRYN SPST_PSCSOEO_LERRYN Tidal River Lerryn 7 9 h 28m -
South West Water ROWING CLUB NO2_CSO_TORPOINT River Tamar 9 9 h 21m -
South West Water WEST LOOE QUAY_CSO_LOOE Looe River 7 9 h 8m -
South West Water MENHENIOT SPST_PSCSOEO_MENHENIOT River Seaton 4 8 h 50m -
South West Water METHERELL STW_SO_METHERELL River Tamar 5 8 h 33m -
South West Water MARKET STREET SPS_PSCSO_KINGSAND Cawsand Bay 17 8 h 21m -
South West Water FORDER No2 SPS_PSCSOEO_SALTASH River Lyner 5 7 h 59m -
South West Water WEST LOOE QUAY_CSO_LOOE Looe River 5 7 h 8m -
South West Water EAST TAPHOUSE STW_SO_EAST TAPHOUSE River Fowey 11 7 h 5m -
South West Water ST MELLION COTTS_CSO_SALTASH Stream 2 6 h 59m -
South West Water POLPERRO FINESCREEN STW_CSO_POLPERRO English Channel 4 6 h 49m -
South West Water DULOE STW_SO_DULOE West Looe River 9 6 h 34m -
South West Water OLD FERRY ROAD_CSO_SALTASH Tamar Estuary 4 5 h 51m -
South West Water LANDRAKE SPS_PSCSOEO_LANDRAKE River Lyner 3 5 h 46m -
South West Water THE QUAY_CSO_CALSTOCK River Tamar 9 5 h 46m -
South West Water POLBATHIC VILLAGE SPS_PSCSOEO_SALTASH Polbathic Stream 4 3 h 19m -
South West Water BRUNEL BRIDGE_CSO_SALTASH River Tamar 12 3 h 7m -
South West Water NEW ROAD_CSO_LISKEARD East Looe River 2 2 h 41m -
South West Water CHURCH SQUARE_CSO_MENHENIOT River Seaton 3 2 h 17m -
South West Water LANREATH SPS_PSCSO_LANREATH Pont Pill 8 2 h 6m -
South West Water COWDRAY CLOSE_CSO_SALTASH River Tamar Estuary 3 2 h 3m -
South West Water BLUNTS S T STW_SO_TIDEFORD Blunts Stream 5 2 h 3m -
South West Water RESCORLA_CSO_LUXULYAN Par Sands 3 1 h 52m 47 h
South West Water CHAPELDOWN SPST_PSCSOEO_TORPOINT Plymouth Sound 2 1 h 26m -
South West Water PORTWRINKLE SPST_PSCSOEO_PORTWRINKLE Whitsand Bay 3 1 h 11m 35 h
South West Water THE QUAY_CSO_CALSTOCK River Tamar 2 1 h 1m -
South West Water WILCOVE SPST_PSCSOEO_TORPOINT Hamoaze 1 1 h 1m -
South West Water QUETHIOCK STW_SO_QUETHIOCK River Tiddy 5 0 h 59m 14 h
South West Water NEW ROAD_CSO_LISKEARD East Looe River 1 0 h 53m -
South West Water OLD FERRY ROAD_CSO_SALTASH Tamar Estuary 3 0 h 53m -
South West Water POLBATHIC VILLAGE SPS_PSCSOEO_SALTASH Polbathic Stream 3 0 h 52m -
South West Water LANDRAKE SPS_PSCSOEO_LANDRAKE River Lyner 1 0 h 52m -
South West Water BODINNICK_CSO_FOWEY River Fowey Estuary 1 0 h 50m -
South West Water ROWING CLUB NO1_CSO_TORPOINT River Tamar 3 0 h 50m -
South West Water HOMER PARK_CSO_SALTASH Saltmill Creek 2 0 h 46m -
South West Water BRUNEL BRIDGE_CSO_SALTASH River Tamar 4 0 h 46m -
South West Water WILCOVE SPST_PSCSOEO_TORPOINT Hamoaze 2 0 h 38m -
South West Water SHEVIOCK S T SEPTNK_SO_SHEVIOCK River Lynher 1 0 h 34m -
South West Water RESCORLA_CSO_LUXULYAN Par Sands 1 0 h 27m -
South West Water SCAWNS HILL_CSO_MENHENIOT River Seaton 1 0 h 26m -
South West Water MOORLANDS IND ESTATE SPS_PSCSOEO_SALTASH River Lynher Estuary 1 0 h 14m -
South West Water BLUNTS S T STW_SO_TIDEFORD Blunts Stream 2 0 h 13m -
South West Water LERRYN SPST_PSCSOEO_LERRYN Tidal River Lerryn 2 0 h 8m -
South West Water DAWS LN_CSO_MILLBROOK Millbrook Via Sws 1 0 h 8m -
South West Water VALLEY VIEW SPS_PSCSOEO_ST KEYNE East Looe River 1 0 h 7m -
South West Water RIVERVIEW_CSO_SALTASH Saltmill Creek 1 0 h 4m -
South West Water KINGSWOOD ROAD SPS_PSCSOEO_GUNNISLAKE River Tamar 1 0 h 4m -
South West Water DAWS LN_CSO_MILLBROOK Millbrook Via Sws 1 0 h 4m -
South West Water SHEVIOCK S T SEPTNK_SO_SHEVIOCK River Lynher 0 0 h -
South West Water ST GERMANS STW_SO_ST GERMANS Polbathic Lake 0 0 h -
South West Water VALLEY VIEW SPS_PSCSOEO_ST KEYNE East Looe River 0 0 h -
South West Water POLRUAN QUAY SPS_PSCSOEO_POLRUAN River Fowey Estuary 0 0 h -
South West Water MINIONS_CSO_MINIONS East Looe River 0 0 h -
South West Water CULVER ROAD_CSO_SALTASH River Tamar Estuary 0 0 h -
South West Water UPTON CROSS_CSO_RILLA MILL River Lyner 0 0 h -
South West Water MOORLANDS IND ESTATE SPS_PSCSOEO_SALTASH River Lynher Estuary 0 0 h -
South West Water LAKE LANE SPS_PSCSOEO_LISKEARD River Seaton 0 0 h -
South West Water GUNNISLAKE NO. 1_CSO_GUNNISLAKE River Tamar 0 0 h -
South West Water THE CLEAVE SPS_PSCSOEO_NORTH ROCK Cawsand Bay 0 0 h -
South West Water FORDER No2 SPS_PSCSOEO_SALTASH River Lyner 0 0 h -
South West Water HOMER PARK_CSO_SALTASH Saltmill Creek 0 0 h -
South West Water THE CLEAVE SPS_PSCSOEO_NORTH ROCK Cawsand Bay 0 0 h -
South West Water LAKE LANE SPS_PSCSOEO_LISKEARD River Seaton 0 0 h -
South West Water WATERSIDE No1 SPST_PSCSOEO_SALTASH River Tamar Estuary 0 0 h 483 h
South West Water KINGSWOOD ROAD SPS_PSCSOEO_GUNNISLAKE River Tamar 0 0 h -
South West Water ROWING CLUB NO1_CSO_TORPOINT River Tamar 0 0 h -
South West Water RIVERVIEW_CSO_SALTASH Saltmill Creek 0 0 h -
South West Water SCAWNS HILL_CSO_MENHENIOT River Seaton 0 0 h -
South West Water ST KEYNE MAIN SPST_PSCSOEO_ST KEYNE West Looe River 0 0 h -
South West Water ST MELLION COTTS_CSO_SALTASH Stream 0 0 h -
South West Water UPTON CROSS_CSO_RILLA MILL River Lyner 0 0 h -
South West Water BODINNICK_CSO_FOWEY River Fowey Estuary 0 0 h -

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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