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Truro and Falmouth - Live Sewage

Polluted by sewage 23,030 hours in 2026 - That's 2.67 years , monitoring offline 2,478 hours so far..

© 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 Truro and Falmouth 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.

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Constituencies near Truro and Falmouth

Daily Data

Jan - 8,637 hours , 167 offline
Feb - 11,009 hours , 0 offline
Mar - 3,184 hours , 135 offline
Apr - 69 hours , 633 offline
May - 111 hours , 0 offline
Jun - 0 hours , 201 offline
Jul - 0 hours , 744 offline
Aug - 19 hours , 595 offline
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 CHACEWATER STW_SSO_CHACEWATER Unknown 95 2,182h 56m -
South West Water 39 ST MICHAELS ROAD_CSO_PONSONOOTH River Kennall 85 1,741h 30m -
South West Water GOONHAVERN STW_SSO_GOONHAVERN Bolingey Stream 75 1,564h 57m -
South West Water MYLOR STW_SSO_MYLOR BRIDGE Mylor Creek 67 1,481h 35m -
South West Water PONSANOOTH STW_SSO_PONSANOOTH River Kennal 56 1,267h 43m 167 h
South West Water GRAMPOUND ROAD SPST_PSCSOEO_GRAMPOUND River Fal 56 1,250h 2m -
South West Water PRAZE TANK_CSO_PENRYN Praze Stream 67 1,198h 32m -
South West Water CARNON DOWNS STW_SO_CARNON DOWNS Carnon River 84 1,088h 38m 768 h
South West Water GOONHAVERN STW_SO_GOONHAVERN Bolingey Stream 57 998h 3m -
South West Water FALMOUTH STW_SSO_FALMOUTH Penryn River 53 970h 58m 163 h
South West Water CHACEWATER BROOK_CSO_TRURO Carnon River 51 959h 9m -
South West Water MITCHELL SPST_PSCSOEO_TRURO Benny Stream 46 845h 16m -
South West Water VERYAN STW_SO_VERYAN Carne Stream 40 835h 15m -
South West Water CHACEWATER STW_SO_CHACEWATER Unknown 64 759h 58m -
South West Water SWANVALE SPS_PSCSOEO_FALMOUTH Falmouth Bay/ Bickland Wat 38 680h 47m -
South West Water LADOCK VALLEY STW_SSO_TRESILLIAN Tresillian River Estuary 46 649h 21m -
South West Water GORRAN CHURCHTOWN SPST_PSCSOEO_GORRAN Portmellon Stream 36 616h 30m -
South West Water NEWHAM STW_SSO_TRURO Truro River 35 583h 57m -
South West Water LEMON ARMS SPST_PSCSOEO_MYLOR BRIDGE Mylor Creek 39 530h 4m 1,334 h
South West Water COMMERCIAL ROAD SPS_PSCSOEO_PENRYN Penryn River 52 508h 37m -
South West Water GORRAN HAVEN SPST_PSCSOEO_GORRAN HAVEN Atlantic Ocean 41 456h 51m 0 h
South West Water TREVILLA SPS_PSCSOEO_FEOCK Pill Creek 25 293h 6m -
South West Water HIGH ST_CSO_FALMOUTH Penryn River 50 213h 16m -
South West Water QUENCHWELL SPS_PSCSOEO_CARNON DOWNS Carnon River 16 210h 3m -
South West Water BOSVIGO LN_CSO_TRURO Freshwater 10 167h 14m -
South West Water XX NORTH PARADE_CSO_FALMOUTH Penryn River 43 139h 10m -
South West Water NEWLYN EAST STW_SO_NEWLYN EAST River Gannel 36 125h 16m -
South West Water CRANTOCK BEACH SPS_PSCSOEO_CRANTOCK Crantock Beach 9 119h 21m 0 h
South West Water DEVORAN SPS_PSCSOEO_DEVORAN River Carnon Estuary 8 95h 36m -
South West Water BLACKWATER STW_SO_BLACKWATER Unknown 22 84h 54m -
South West Water TREGONY SPST_PSCSOEO_TREGONY River Fal 7 59h 14m -
South West Water FLUSHING SPST_PSCSOEO_FALMOUTH Penryn River 24 54h 37m -
South West Water O/S XX THOMAS ST_CSO_PENRYN Penryn River 25 49h 55m 43 h
South West Water CALENICK SPST_PSCSOEO_TRURO River Tinney 9 41h 1m -
South West Water GREENBANK GARDENS_CSO_FALMOUTH Penryn River 14 40h 20m -
South West Water VICTORIA SQUARE_CSO_TRURO River Kenwyn 12 26h 45m -
South West Water OLD HILL SPS_PSCSOEO_FALMOUTH Penryn River 8 25h 44m -
South West Water ST MAWES No1 SPS_PSCSOEO_ST MAWES Carrick Roads 19 21h 15m -
South West Water TRELANDER HIGHWAY_CSO_TRURO River Allen 17 18h 46m -
South West Water GROVE PLACE NO. 1_CSO_FALMOUTH Penryn River 7 13h 27m -
South West Water NORTH PARADE_CSO_FALMOUTH Penryn River 17 9h 27m -
South West Water NEWHAM ROAD SPST_PSCSOEO_TRURO Truro River 8 8h 14m -
South West Water EDWARD ST_CSO_TRURO River Kenwyn 9 7h 22m -
South West Water QUEEN MARY GARDENS SPS_PSCSOEO_FALMOUTH Falmouth Bay 10 7h 21m -
South West Water ROBERTS OPE_CSO_TRURO River Kenwyn[S] 5 7h 4m -
South West Water OLD BRIDGE ST CAR PARK_CSO_TRURO River Allen 4 6h 1m -
South West Water KILLIGREW ST_CSO_FALMOUTH Penryn River 5 5h 59m -
South West Water MORLAIX AV_CSO_FYFFES SLIPWAY Truro River 3 4h 45m -
South West Water PORTLOE FINESCN_PSCSOEO_PORTLOE English Channel 1 1h 39m -
South West Water RUZZA SPS_PSCSOEO_NEWQUAY Porth Joke 2 1h 16m -
South West Water PORTSCATHO INLET SPS_PSCSOEO_PORTSCATHO Pencabe Drang 2 0h 22m -
South West Water PAULS TERRACE_CSO_TRURO River Allen 2 0h 17m -
South West Water ELLENGLAZE SPS_PSCSOEO_CUBERT Stream 2 0h 11m -
South West Water FRANCIS ST_CSO_TRURO River Kenwyn 2 0h 10m -
South West Water CALENICK ST REPEATER STATION_CSO_TRURO River Kenwyn Via Sws 1 0h 10m -
South West Water ST CLEMENTS HILL_CSO_TRURO River Allen Via Sws 1 0h 4m -
South West Water PONSANOOTH STW_SSO_PONSANOOTH River Kennal 0 0h -
South West Water TRELANDER HIGHWAY_CSO_TRURO River Allen 0 0h -
South West Water KILLIGREW ST_CSO_FALMOUTH Penryn River 0 0h -
South West Water CRANTOCK BEACH SPS_PSCSOEO_CRANTOCK Crantock Beach 0 0h -
South West Water MYLOR STW_SSO_MYLOR BRIDGE Mylor Creek 0 0h -
South West Water PAULS TERRACE_CSO_TRURO River Allen 0 0h -
South West Water TABERNACLE ST_CSO_TRURO River Kenwyn Via Sws 0 0h -
South West Water WEBBER ST_CSO_FALMOUTH Penryn River 0 0h -
South West Water SWANVALE SPS_PSCSOEO_FALMOUTH Falmouth Bay/ Bickland Wat 0 0h -
South West Water LEMON MEWS_CSO_TRURO River Kenwyn 0 0h -
South West Water CAMPFIELD HILL_CSO_TRURO River Allen 0 0h -
South West Water OLD BRIDGE ST CAR PARK_CSO_TRURO River Allen 0 0h -
South West Water O/S XX THOMAS ST_CSO_PENRYN Penryn River 0 0h -
South West Water PORTLOE FINESCN_PSCSOEO_PORTLOE English Channel 0 0h -
South West Water SWANPOOL SPS_PSCSOEO_FALMOUTH Swanpool 0 0h -
South West Water MITCHELL SPST_PSCSOEO_TRURO Benny Stream 0 0h -
South West Water PRAZE TANK_CSO_PENRYN Praze Stream 0 0h -
South West Water NORTH PARADE_CSO_FALMOUTH Penryn River 0 0h -
South West Water CHACEWATER STW_SSO_CHACEWATER Unknown 0 0h -
South West Water 39 ST MICHAELS ROAD_CSO_PONSONOOTH River Kennall 0 0h -
South West Water CAMPFIELD HILL_CSO_TRURO River Allen 0 0h -
South West Water EDWARD ST_CSO_TRURO River Kenwyn 0 0h -
South West Water NEWHAM ROAD SPST_PSCSOEO_TRURO Truro River 0 0h -
South West Water KING ST_CSO_TRURO River Kenwyn Via Sws 0 0h -
South West Water LADOCK VALLEY STW_SSO_TRESILLIAN Tresillian River Estuary 0 0h -
South West Water ELLENGLAZE SPS_PSCSOEO_CUBERT Stream 0 0h -
South West Water OLD HILL SPS_PSCSOEO_FALMOUTH Penryn River 0 0h -
South West Water ST MAWES No1 SPS_PSCSOEO_ST MAWES Carrick Roads 0 0h -
South West Water ST GEORGES ROAD_CSO_TRURO River Kenwyn 0 0h -
South West Water LEMON MEWS_CSO_TRURO River Kenwyn 0 0h -
South West Water FAIRMANTLE ST CAR PARK_CSO_TRURO River Kenwyn 0 0h -
South West Water GROVE PLACE NO. 1_CSO_FALMOUTH Penryn River 0 0h -
South West Water BLACKWATER STW_SO_BLACKWATER Unknown 0 0h -
South West Water MORLAIX AV_CSO_FYFFES SLIPWAY Truro River 0 0h -
South West Water GORRAN CHURCHTOWN SPST_PSCSOEO_GORRAN Portmellon Stream 0 0h -
South West Water VERYAN STW_SO_VERYAN Carne Stream 0 0h -
South West Water KING ST_CSO_TRURO River Kenwyn Via Sws 0 0h -
South West Water GOONHAVERN STW_SO_GOONHAVERN Bolingey Stream 0 0h -
South West Water CHACEWATER STW_SO_CHACEWATER Unknown 0 0h -
South West Water HENDRA RD_CSO_TRURO River Kenwyn 0 0h -
South West Water ST CLEMENTS HILL_CSO_TRURO River Allen Via Sws 0 0h -
South West Water DEVORAN SPS_PSCSOEO_DEVORAN River Carnon Estuary 0 0h -
South West Water GORRAN HAVEN SPST_PSCSOEO_GORRAN HAVEN Atlantic Ocean 0 0h -
South West Water QUENCHWELL SPS_PSCSOEO_CARNON DOWNS Carnon River 0 0h -
South West Water XX NORTH PARADE_CSO_FALMOUTH Penryn River 0 0h -
South West Water QUEEN MARY GARDENS SPS_PSCSOEO_FALMOUTH Falmouth Bay 0 0h -
South West Water TEHIDY TERRACE_CSO_FALMOUTH Penryn River 0 0h -
South West Water GREENBANK GARDENS_CSO_FALMOUTH Penryn River 0 0h -
South West Water SWANPOOL SPS_PSCSOEO_FALMOUTH Swanpool 0 0h -
South West Water ST GEORGES ROAD_CSO_TRURO River Kenwyn 0 0h -
South West Water CALENICK ST REPEATER STATION_CSO_TRURO River Kenwyn Via Sws 0 0h -
South West Water TREVILLA SPS_PSCSOEO_FEOCK Pill Creek 0 0h -
South West Water MYLOR STW_SO_MYLOR BRIDGE Mylor Creek 0 0h -
South West Water PORTSCATHO INLET SPS_PSCSOEO_PORTSCATHO Pencabe Drang 0 0h -
South West Water ROBERTS OPE_CSO_TRURO River Kenwyn[S] 0 0h -
South West Water GRAMPOUND ROAD SPST_PSCSOEO_GRAMPOUND River Fal 0 0h -
South West Water CARNON DOWNS STW_SO_CARNON DOWNS Carnon River 0 0h -
South West Water CHACEWATER BROOK_CSO_TRURO Carnon River 0 0h -
South West Water TREGONY SPST_PSCSOEO_TREGONY River Fal 0 0h -
South West Water VICTORIA SQUARE_CSO_TRURO River Kenwyn 0 0h -
South West Water HIGH ST_CSO_FALMOUTH Penryn River 0 0h -
South West Water MYLOR STW_SO_MYLOR BRIDGE Mylor Creek 0 0h -
South West Water FAIRMANTLE ST CAR PARK_CSO_TRURO River Kenwyn 0 0h -
South West Water FLUSHING SPST_PSCSOEO_FALMOUTH Penryn River 0 0h -
South West Water HENDRA RD_CSO_TRURO River Kenwyn 0 0h -
South West Water FALMOUTH STW_SSO_FALMOUTH Penryn River 0 0h -
South West Water COMMERCIAL ROAD SPS_PSCSOEO_PENRYN Penryn River 0 0h -
South West Water WEBBER ST_CSO_FALMOUTH Penryn River 0 0h -
South West Water NEWHAM STW_SSO_TRURO Truro River 0 0h -
South West Water NEWLYN EAST STW_SO_NEWLYN EAST River Gannel 0 0h -
South West Water CALENICK SPST_PSCSOEO_TRURO River Tinney 0 0h -
South West Water BOSVIGO LN_CSO_TRURO Freshwater 0 0h -
South West Water RUZZA SPS_PSCSOEO_NEWQUAY Porth Joke 0 0h -
South West Water TEHIDY TERRACE_CSO_FALMOUTH Penryn River 0 0h -
South West Water FRANCIS ST_CSO_TRURO River Kenwyn 0 0h -
South West Water GOONHAVERN STW_SSO_GOONHAVERN Bolingey Stream 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

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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