Truro and Falmouth polluted by sewage 2,604 times in 2023 - lasting 23,073 hours
- but monitoring was disabled in some locations, so could be more

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Truro and Falmouth in 2023
51 Sites polluted by South West Water
2,604 sewage dumps
23,073 h duration
That's 2.67 years! On average 7.1 times a day
Change Over Time
Constituencies near Truro and Falmouth

Pollution Summary 2023

Here are all the reported sewage overflow totals for Truro and Falmouth in 2023. 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 5 of the total 72 CSO locations had reporting enabled for less than half the year, of which 5 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
South West Water Unknown CHACEWATER STW 177 3,405 74.15
South West Water Hicks Mill Stream GWENNAP WASTEWATER TREATMENT WORKS 207 3,055 100
South West Water Bolingey Stream GOONHAVERN WWTW 193 2,749 100
South West Water Mylor Creek MYLOR BRIDGE WWTW 203 2,643 100
South West Water River Fal GRAMPOUND ROAD PUMPING STATION 81 1,404 55.1
South West Water Carnon River CARNON DOWNS WWTW 290 1,242 99.5
South West Water Benny Stream MITCHELL PUMPING STATION 77 1,164 100
South West Water Penryn River COMMERCIAL ROAD PUMPING STATION 89 1,159 100
South West Water Penryn River FALMOUTH STW INLET & STORM PS 60 1,079 100
South West Water Tresillian River Estuary LADOCK VALLEY STW 69 902 100
South West Water Praze Stream PRAZE TANK CSO 77 726 100
South West Water Truro River Estuary TRURO (NEWHAM) STW 56 709 100
South West Water Pill Creek LOWER TREVILLA PUMPING STATION 46 438 100
South West Water Penryn River FLUSHING PUMPING STATION 96 425 100
South West Water Mylor Creek MYLOR BRIDGE PSCSO/EO 28 248 100
South West Water River Kenwyn VICTORIA SQUARE CSO 47 230 100
South West Water Trevaunance Stream PETERVILLE PUMPING STATION 33 219 100
South West Water Carrick Roads ST MAWES NO.1 PS 22 208 100
South West Water Penryn River CSO IN HIGH STREET 78 202 100
South West Water Carnon River QUENCHWELL PUMPING STATION 26 202 100
South West Water River Fal TREGONY BRIDGE PUMPING STATION 10 93 100
South West Water Falmouth Bay/ Bickland Wat SWANVALE PUMPING STATION 35 65 93.7
South West Water River Gannel ST NEWLYN EAST WWTW 69 60 100
South West Water River Allen Via Sws ST CLEMENT'S HILL CSO 4 51 89.3
South West Water Penryn River CSO AT KILLIGREW STREET 78 50 100
South West Water Unknown BLACKWATER STW 62 44 100
South West Water Penryn River CSO AT NORTH PARADE 41 41 100
South West Water Porth Joke RUZZA PUMPING STATION 9 31 100
South West Water Penryn River WEBBER STREET CSO 42 25 100
South West Water Truro River NEWHAM ROAD PUMPING STATION 25 23 100
South West Water Penryn River ST THOMAS STREET CSO 24 22 93.5
South West Water River Allen TRELANDER HIGHWAY CSO 34 19 100
South West Water Falmouth Bay QUEEN MARY GARDENS PUMPING STATION 26 18 100
South West Water Penryn River GROVE PLACE NO.1 CSO 10 14 82.3
South West Water River Kenwyn FRANCES STREET CSO TRURO 2 12 66.5
South West Water Atlantic Ocean ST AGNES WASTEWATER TREATMENT WORKS 14 12 100
South West Water Trevaunance Stream COVE PUMPING STATION 17 12 100
South West Water River Kenwyn EDWARD STREET CSO 16 10 100
South West Water River Tinney CALENICK PUMPING STATION 7 9 100
South West Water Penryn River CSO AT DUNSTANVILLE TERRACE 44 6 100
South West Water River Kenwyn HENDRA ROAD CSO 26 6 100
South West Water Penryn River OLD HILL PS 8 6 100
South West Water River Kenwyn Via Sws CALENICK STREET CSO 3 4 70.4
South West Water Pencabe Drang PORTSCATHO SEWAGE TREATMENT WORKS 11 2 100
South West Water River Carnon Estuary DEVORAN PUMPING STATION 2 2 100
South West Water River Allen OLD BRIDGE STREET CAR PARK CSO 5 2 100
South West Water Carne Stream VERYAN STW 7 1 100
South West Water Truro River MORLAIX AVENUE (FYFFES SLIPWAY) CSO 7 0 100
South West Water River Allen PAULS TERRACE CSO 3 0 84.4
South West Water River Allen CAMPFIELD HILL CSO 2 0 100
South West Water Penryn River TEHIDY TERRACE CSO 6 0 100
South West Water River Kenwyn LEMON MEWS CSO 0 0 100
South West Water Stream ELLENGLAZE PSCSO/EO 0 0 100
South West Water Tresillian River Estuary BOAT YARD PS CSO/EO 0 0 100
South West Water River Kenwyn FAIRMANTLE STREET CSO 0 0 100
South West Water Unknown VICTORIA QUAY PSCSO/EO 0 0 100
South West Water English Channel PORTLOE WASTEWATER TREATMENT WORKS 0 0 100
South West Water Penryn River CSO OFF PENDARVES ROAD 0 0 0
South West Water Bolingey Stream STATION ROAD PUMPING STATION 0 0 100
South West Water Penryn River CSO AT SMITHICK HILL 0 0 0
South West Water River Kenwyn Via Sws KING STREET CSO 0 0 50.9
South West Water River Kenwyn CASTLE STREET CSO 0 0 100
South West Water Truro River Estuary System VICTORIA LODGE PS CSO/EO 0 0 100
South West Water River Kenwyn ST GEORGES ROAD (REAR OF NO16) CSO 0 0 100
South West Water Swanpool SWANPOOL PSCSO/EO 0 0 99.5
South West Water Penryn River OLD HILL (TRESAWLE RD) CSO 0 0 5.6
South West Water Penryn River PRINCE OF WALES PUMPING STATION 0 0 0
South West Water Kenwyn River O/S 8 CALLENICK STREET CSO 0 0 0
South West Water River Kenwyn Via Sws TABERNACLE STREET CSO 0 0 100
South West Water River Kenwyn[S] ROBERTS OPE CSO 0 0 0
South West Water Freshwater BOSVIGO LANE CSO 0 0 100
South West Water Penryn River CSO AT MARKET STREET 0 0 94.4

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This 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.