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South East Cornwall

Polluted by sewage 3,997 times in 2025 lasting 36,130 hours - That's 4.18 years!

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

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Live data for South East Cornwall in 2026

So far this year (as of 17 May 2026, 00:16) there has been 30,681 hours of sewage overflows, from 200 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 3.55 years!

Totals for South East Cornwall in 2025

92 Sites polluted by South West Water
3,997 sewage dumps
36,130 hours duration
That's 4.18 years. On average 11 times a day

Change Over Time

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Pollution Summary 2025

Here are all the reported sewage overflow totals for South East Cornwall in 2025. 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 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
South West Water River Tamar METHERELL WWTW 137 2,390 96.65
South West Water St Neot River ST NEOT STW 167 2,031 100
South West Water River Lynher GOLBERDON STW 126 1,782 100
South West Water Landrake Stream LANDRAKE WASTEWATER TREATMENT WORKS 91 1,755 100
South West Water River Tamar Estuary ST DOMINICK WWTW 93 1,669 98.5
South West Water River Fowey COMMONMOOR STW 127 1,589 100
South West Water River Seaton MENHENIOT WWTW 131 1,574 100
South West Water Unknown ST AUSTELL NORTH STW 86 1,557 99.5
South West Water River Loveny CHAPEL CAR PARK PSCSO/EO 82 1,489 99.9
South West Water River Tamar GUNNISLAKE WWTW 166 1,396 100
South West Water River Fowey COULSON PARK PUMPING STATION 78 1,371 100
South West Water River Pol PELYNT WASTEWATER TREATMENT WORKS 84 1,368 100
South West Water Tremar Stream ST CLEER WASTEWATER TREATMENT WORKS 67 1,095 100
South West Water English Channel SEATON PUMPING STATION 67 1,071 100
South West Water River Tamar ST DOMINICK PUMPING STATION 72 1,066 100
South West Water River Tamar HAREWOOD ROAD CSO 164 1,029 99.9
South West Water Haye Valley Stream CALLINGTON WWTW 62 1,005 100
South West Water Millbrook Lake MILLBROOK STW 66 847 100
South West Water East Looe River LISKEARD STW 73 789 97.5
South West Water River Tamar PLAYING FIELDS PUMPING STATION 73 660 100
South West Water Unknown HARROWBARROW WWTW 68 628 98.7
South West Water River Tamar LATCHLEY STW 42 604 98.9
South West Water St John'S Lake TORPOINT WASTEWATER TREATMENT WORKS 57 548 100
South West Water Unknown RILLA MILL WWTW 38 463 98.2
South West Water Haye Valley Stream HAYE ROAD COMBINED SEWER OVERFLOW 77 462 99.6
South West Water River Lynher PILLATON WASTEWATER TREATMEMT WORKS 33 452 100
South West Water River Seaton MINIONS STW 105 361 100
South West Water Cawsand Bay Estaurine Via Sws CAWSAND SOUTH PUMPING STATION 29 354 100
South West Water English Channel DOWNDERRY 27 305 98.6
South West Water River Lynher HATT WASTEWATER TREATMENT WORKS 24 303 90.3
South West Water Polbathic Lake ST GERMANS WWTW 27 295 100
South West Water Looe River HEALTH CENTRE CAR PARK PSEO/CSO 67 278 100
South West Water Unnamed To West Looe Rivr DOBWALLS SPS 27 272 100
South West Water River Tamar CHILSWORTHY WWTW 41 250 95.7
South West Water River Tamar Via Sws GUNNISLAKE NO.2 CSO 82 230 97.8
South West Water Saltmill Creek RIVERVIEW PSCSO/EO 20 211 100
South West Water River Tiddy PENSILVA PUMPING STATION 22 206 98.1
South West Water River Lyner FORDER NO 1 PSCSO/EO 28 200 98.9
South West Water River Seaton CROWSNEST STW 40 183 94.7
South West Water St Mellion Stream ST MELLION PUMPING STATION 22 145 100
South West Water River Lynher Estuary ANTONY STW (INLET TO WORKS) SSO 64 133 98.1
South West Water River Tamar CARGREEN PSCSO/EO 49 130 100
South West Water Hamoaze MACEY STEPS CSO 56 127 96.4
South West Water Plymouth Sound CATTEDOWN ROAD PUMPING STATION 34 127 100
South West Water Cawsand Bay KINGSAND SEWAGE PUMPING STATION 65 122 95.85
South West Water Looe Bay HANNAFORE PUMPING STATION 61 115 100
South West Water River Seaton FACTORY HOUSES PUMPING STATION 12 107 100
South West Water East Looe River SUNGIRT LANE CSO 29 90 100
South West Water Saltmill Creek ADIT LANE CSO 60 89 97.4
South West Water West Looe River DULOE STW 41 88 100
South West Water Looe Bay PLAIDY PUMP STATION 58 61 98.3
South West Water River Seaton CHURCH SQUARE CSO 12 56 100
South West Water Whitsand Bay PORTWRINKLE PSCSO/EO 17 48 100
South West Water River Tamar THANCKES PARK PUMPING STATION 32 43 76
South West Water River Tamar Estuary COWDRY CLOSE CSO 17 37 92.2
South West Water River Seaton WIDEGATES WWTW 39 34 100
South West Water River Tamar ROWING CLUB NO2 CSO 30 32 100
South West Water St Johns Leat ST JOHN STW 42 32 97.7
South West Water Un-Named Watercourse TREDINNICK STW 23 31 98.5
South West Water River Tamar Estuary COOMBE ROAD CSO 10 25 100
South West Water River Fowey EAST TAPHOUSE WWTW 18 25 99.9
South West Water River Seaton SCAWNS HILL CSO 10 24 100
South West Water East Looe River TREWIDLAND STW 32 22 100
South West Water Plymouth Sound CHAPELDOWN PUMPING STATION 27 22 100
South West Water Looe River LOOE BULLER QUAY 12 21 100
South West Water River Tiddy QUETHIOCK WWTW 34 20 100
South West Water Pont Pill LANREATH PUMPING STATION 23 18 100
South West Water River Tamar LOWER KELLY PSCSO/EO 8 18 100
South West Water English Channel POLPERRO WWTW 12 14 100
South West Water River Lerryn LERRYN PSCSO/EO 19 13 100
South West Water River Tamar Estuary WATERSIDE PUMPING STATION 8 10 99.7
South West Water River Lyner FORDER NO 2 PSCSO/EO 5 8 98.9
South West Water Tamar Estuary OLD FERRY ROAD CSO 11 7 100
South West Water River Tamar THE QUAY COMBINED SEWER OVERFLOW 19 7 100
South West Water Stream ST MELLION PUMPING STATION 2 6 100
South West Water River Tamar BRUNEL BRIDGE CSO 29 6 94.8
South West Water River Lyner LANDRAKE PUMPING STATION 3 6 100
South West Water Polbathic Stream POLBATHIC VILLAGE PS 16 5 100
South West Water River Tamar Estuary SPENCER GARDENS CSO 12 5 99
South West Water Looe River WEST LOOE SQUARE CSO 4 4 100
South West Water East Looe River NEW ROAD CSO 3 3 100
South West Water Blunts Stream BLUNTS STW 11 3 100
South West Water Hamoaze WILCOVE STW 2 2 100
South West Water Par Sands RESCORLA CSO 7 2 93.8
South West Water River Fowey Estuary BODINNICK COMBINED SEWER OVERFLOW 3 1 100
South West Water River Tamar ROWING CLUB NO1 CSO 8 1 100
South West Water Millbrook Via Sws DAWES LANE COMBINED SEWER OVERFLOW 6 0 100
South West Water Saltmill Creek HOMER PARK CSO 7 0 100
South West Water River Lynher Estuary MOORLANDS PSCSO/EO 4 0 100
South West Water River Lynher SHEVIOCK STW SO 1 0 99.3
South West Water Saltmill Creek RIVERVIEW CSO 1 0 100
South West Water Cawsand Bay NORTH ROCK SEWAGE PUMPING STATION 1 0 95.8
South West Water River Tamar Estuary CULVER ROAD CSO 0 0 100
South West Water River Tamar GUNNISLAKE NO.1 CSO 0 0 98.6
South West Water River Tamar KINGSWOOD ROAD PUMPING STATION 0 0 100
South West Water River Seaton LAKE LANE PUMPING STATION 0 0 99.8
South West Water River Fowey LANTEGLOS PSCSO/EO 0 0 100
South West Water Polbathic Lake LYNHER PSCSO/EO 0 0 95.8
South West Water East Looe River MINIONS CSO 0 0 100
South West Water River Fowey Estuary POLRUAN QUAY PS 0 0 100
South West Water Whitsand Bay PORTWRINKLE TANK CSO 0 0 100
South West Water West Looe River ST KEYNE NO.1 PSCSO/EO 0 0 99.7
South West Water River Lyner UPTON CROSS COMBINED SEWER OVERFLOW 0 0 95.1
South West Water East Looe River VALLEY VIEW PSCSO/EO 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. 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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