Truro and Falmouth - 2025 Sewage

Polluted by sewage 27,883 hours in 2025 - That's 3.23 years

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

Which Year?

Select Another Constituency

Select the constituency from the drop-down
✔ 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 Truro and Falmouth 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.

Take Action

Your local MP is Jayne Kirkham (Labour/Co-operative) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK
Post
Post

Constituencies near Truro and Falmouth

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Truro and Falmouth, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online
Monitoring Offline
Polluting
Potentially Polluting
Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
We need your support!

We managed to raise £150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.

Donate Now

Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
South West Water CHACEWATER STW_SSO_CHACEWATER Unknown 125 2,732 h 15m 113.83
South West Water PONSANOOTH STW_SSO_PONSANOOTH River Kennal 90 1,827 h 40m 76.12
South West Water GOONHAVERN STW_SSO_GOONHAVERN Bolingey Stream 103 1,704 h 57m 71
South West Water 39 ST MICHAELS ROAD_CSO_PONSONOOTH River Kennall 117 1,649 h 39m 68.71
South West Water PONSANOOTH STW_SSO_PONSANOOTH River Kennal 58 1,368 h 59m 57
South West Water GRAMPOUND ROAD SPST_PSCSOEO_GRAMPOUND River Fal 96 1,356 h 26m 56.5
South West Water CHACEWATER STW_SSO_CHACEWATER Unknown 56 1,339 h 31m 55.79
South West Water 39 ST MICHAELS ROAD_CSO_PONSONOOTH River Kennall 56 1,294 h 40m 53.92
South West Water GRAMPOUND ROAD SPST_PSCSOEO_GRAMPOUND River Fal 54 1,118 h 38m 46.58
South West Water GOONHAVERN STW_SSO_GOONHAVERN Bolingey Stream 53 1,058 h 36m 44.08
South West Water MYLOR STW_SSO_MYLOR BRIDGE Mylor Creek 50 971 h 40.46
South West Water MORLAIX AV_CSO_FYFFES SLIPWAY Truro River 49 944 h 12m 39.33
South West Water MYLOR STW_SSO_MYLOR BRIDGE Mylor Creek 33 731 h 21m 30.46
South West Water COMMERCIAL ROAD SPS_PSCSOEO_PENRYN Penryn River 52 596 h 25m 24.83
South West Water MITCHELL SPST_PSCSOEO_TRURO Benny Stream 32 565 h 5m 23.54
South West Water PRAZE TANK_CSO_PENRYN Praze Stream 30 557 h 10m 23.21
South West Water GOONHAVERN STW_SO_GOONHAVERN Bolingey Stream 53 449 h 13m 18.71
South West Water GOONHAVERN STW_SO_GOONHAVERN Bolingey Stream 31 437 h 30m 18.21
South West Water FALMOUTH STW_SSO_FALMOUTH Penryn River 23 410 h 45m 17.08
South West Water VERYAN STW_SO_VERYAN Carne Stream 18 407 h 41m 16.96
South West Water LADOCK VALLEY STW_SSO_TRESILLIAN Tresillian River Estuary 27 394 h 17m 16.42
South West Water SWANVALE SPS_PSCSOEO_FALMOUTH Falmouth Bay/ Bickland Wat 18 357 h 37m 14.88
South West Water EDWARD ST_CSO_TRURO River Kenwyn 56 354 h 58m 14.75
South West Water NEWHAM STW_SSO_TRURO Truro River 23 344 h 8m 14.33
South West Water NEWHAM STW_SSO_TRURO Truro River 26 337 h 7m 14.04
South West Water LADOCK VALLEY STW_SSO_TRESILLIAN Tresillian River Estuary 29 334 h 20m 13.92
South West Water SWANVALE SPS_PSCSOEO_FALMOUTH Falmouth Bay/ Bickland Wat 23 332 h 59m 13.83
South West Water CHACEWATER BROOK_CSO_TRURO Carnon River 20 322 h 12m 13.42
South West Water COMMERCIAL ROAD SPS_PSCSOEO_PENRYN Penryn River 25 295 h 12.29
South West Water LEMON ARMS SPST_PSCSOEO_MYLOR BRIDGE Mylor Creek 20 286 h 6m 11.92
South West Water GORRAN HAVEN SPST_PSCSOEO_GORRAN HAVEN Atlantic Ocean 22 243 h 49m 10.12
South West Water HIGH ST_CSO_FALMOUTH Penryn River 71 222 h 57m 9.25
South West Water TREVILLA SPS_PSCSOEO_FEOCK Pill Creek 16 193 h 24m 8.04
South West Water FALMOUTH STW_SSO_FALMOUTH Penryn River 16 171 h 57m 7.12
South West Water GORRAN HAVEN SPST_PSCSOEO_GORRAN HAVEN Atlantic Ocean 27 146 h 13m 6.08
South West Water CHACEWATER BROOK_CSO_TRURO Carnon River 31 134 h 28m 5.58
South West Water PRAZE TANK_CSO_PENRYN Praze Stream 29 127 h 17m 5.29
South West Water HIGH ST_CSO_FALMOUTH Penryn River 28 123 h 56m 5.12
South West Water XX NORTH PARADE_CSO_FALMOUTH Penryn River 68 118 h 35m 4.92
South West Water GORRAN CHURCHTOWN SPST_PSCSOEO_GORRAN Portmellon Stream 11 107 h 3m 4.46
South West Water QUENCHWELL SPS_PSCSOEO_CARNON DOWNS Carnon River 12 103 h 10m 4.29
South West Water BOSVIGO LN_CSO_TRURO Freshwater 15 98 h 31m 4.08
South West Water XX NORTH PARADE_CSO_FALMOUTH Penryn River 26 89 h 3m 3.71
South West Water QUENCHWELL SPS_PSCSOEO_CARNON DOWNS Carnon River 16 78 h 57m 3.25
South West Water CARNON DOWNS STW_SO_CARNON DOWNS Carnon River 12 69 h 28m 2.88
South West Water TREGONY SPST_PSCSOEO_TREGONY River Fal 8 61 h 49m 2.54
South West Water NEWLYN EAST STW_SO_NEWLYN EAST River Gannel 43 59 h 24m 2.46
South West Water NORTH PARADE_CSO_FALMOUTH Penryn River 52 57 h 41m 2.38
South West Water ROBERTS OPE_CSO_TRURO River Kenwyn[S] 35 56 h 4m 2.33
South West Water TREVILLA SPS_PSCSOEO_FEOCK Pill Creek 15 55 h 56m 2.29
South West Water DEVORAN SPS_PSCSOEO_DEVORAN River Carnon Estuary 7 54 h 29m 2.25
South West Water BOSVIGO LN_CSO_TRURO Freshwater 4 47 h 2m 1.96
South West Water GREENBANK GARDENS_CSO_FALMOUTH Penryn River 29 46 h 29m 1.92
South West Water FLUSHING SPST_PSCSOEO_FALMOUTH Penryn River 35 39 h 45m 1.62
South West Water O/S XX THOMAS ST_CSO_PENRYN Penryn River 29 38 h 11m 1.58
South West Water GREENBANK GARDENS_CSO_FALMOUTH Penryn River 16 36 h 38m 1.5
South West Water NEWLYN EAST STW_SO_NEWLYN EAST River Gannel 23 28 h 19m 1.17
South West Water KILLIGREW ST_CSO_FALMOUTH Penryn River 23 24 h 17m 1
South West Water BLACKWATER STW_SO_BLACKWATER Unknown 27 20 h 37m 0.83
South West Water PORTSCATHO INLET SPS_PSCSOEO_PORTSCATHO Pencabe Drang 13 20 h 12m 0.83
South West Water FLUSHING SPST_PSCSOEO_FALMOUTH Penryn River 9 20 h 5m 0.83
South West Water TRELANDER HIGHWAY_CSO_TRURO River Allen 23 17 h 23m 0.71
South West Water VICTORIA SQUARE_CSO_TRURO River Kenwyn 18 17 h 3m 0.71
South West Water O/S XX THOMAS ST_CSO_PENRYN Penryn River 12 16 h 45m 0.67
South West Water VICTORIA SQUARE_CSO_TRURO River Kenwyn 12 14 h 59m 0.58
South West Water MYLOR STW_SO_MYLOR BRIDGE Mylor Creek 4 14 h 9m 0.58
South West Water BLACKWATER STW_SO_BLACKWATER Unknown 13 14 h 1m 0.58
South West Water KILLIGREW ST_CSO_FALMOUTH Penryn River 9 13 h 52m 0.54
South West Water CALENICK SPST_PSCSOEO_TRURO River Tinney 2 13 h 33m 0.54
South West Water TRELANDER HIGHWAY_CSO_TRURO River Allen 13 12 h 56m 0.5
South West Water OLD BRIDGE ST CAR PARK_CSO_TRURO River Allen 16 12 h 31m 0.5
South West Water MITCHELL SPST_PSCSOEO_TRURO Benny Stream 11 11 h 2m 0.46
South West Water QUEEN MARY GARDENS SPS_PSCSOEO_FALMOUTH Falmouth Bay 13 9 h 45m 0.38
South West Water GORRAN CHURCHTOWN SPST_PSCSOEO_GORRAN Portmellon Stream 16 9 h 34m 0.38
South West Water CHACEWATER STW_SO_CHACEWATER Unknown 11 9 h 9m 0.38
South West Water ST MAWES No1 SPS_PSCSOEO_ST MAWES Carrick Roads 12 8 h 33m 0.33
South West Water LEMON MEWS_CSO_TRURO River Kenwyn 4 8 h 21m 0.33
South West Water ST MAWES No1 SPS_PSCSOEO_ST MAWES Carrick Roads 10 8 h 0.33
South West Water QUEEN MARY GARDENS SPS_PSCSOEO_FALMOUTH Falmouth Bay 9 7 h 29m 0.29
South West Water OLD HILL SPS_PSCSOEO_FALMOUTH Penryn River 7 7 h 10m 0.29
South West Water PAULS TERRACE_CSO_TRURO River Allen 5 6 h 21m 0.25
South West Water GROVE PLACE NO. 1_CSO_FALMOUTH Penryn River 5 6 h 15m 0.25
South West Water EDWARD ST_CSO_TRURO River Kenwyn 9 6 h 4m 0.25
South West Water GROVE PLACE NO. 1_CSO_FALMOUTH Penryn River 4 5 h 41m 0.21
South West Water ELLENGLAZE SPS_PSCSOEO_CUBERT Stream 4 5 h 33m 0.21
South West Water RUZZA SPS_PSCSOEO_NEWQUAY Porth Joke 6 5 h 5m 0.21
South West Water OLD HILL SPS_PSCSOEO_FALMOUTH Penryn River 4 5 h 2m 0.21
South West Water OLD BRIDGE ST CAR PARK_CSO_TRURO River Allen 1 4 h 54m 0.17
South West Water NEWHAM ROAD SPST_PSCSOEO_TRURO Truro River 3 4 h 29m 0.17
South West Water CARNON DOWNS STW_SO_CARNON DOWNS Carnon River 6 3 h 37m 0.12
South West Water ST GEORGES ROAD_CSO_TRURO River Kenwyn 5 3 h 17m 0.12
South West Water NEWHAM ROAD SPST_PSCSOEO_TRURO Truro River 3 3 h 14m 0.12
South West Water CRANTOCK BEACH SPS_PSCSOEO_CRANTOCK Crantock Beach 2 2 h 51m 0.08
South West Water CRANTOCK BEACH SPS_PSCSOEO_CRANTOCK Crantock Beach 3 2 h 36m 0.08
South West Water TREGONY SPST_PSCSOEO_TREGONY River Fal 2 2 h 17m 0.08
South West Water CALENICK SPST_PSCSOEO_TRURO River Tinney 2 1 h 52m 0.04
South West Water HENDRA RD_CSO_TRURO River Kenwyn 6 1 h 46m 0.04
South West Water CALENICK ST REPEATER STATION_CSO_TRURO River Kenwyn Via Sws 6 1 h 34m 0.04
South West Water CAMPFIELD HILL_CSO_TRURO River Allen 3 1 h 11m 0.04
South West Water ST CLEMENTS HILL_CSO_TRURO River Allen Via Sws 4 1 h 6m 0.04
South West Water VERYAN STW_SO_VERYAN Carne Stream 2 1 h 5m 0.04
South West Water DEVORAN SPS_PSCSOEO_DEVORAN River Carnon Estuary 2 0 h 56m 0
South West Water FAIRMANTLE ST CAR PARK_CSO_TRURO River Kenwyn 2 0 h 38m 0
South West Water TEHIDY TERRACE_CSO_FALMOUTH Penryn River 1 0 h 37m 0
South West Water PAULS TERRACE_CSO_TRURO River Allen 3 0 h 35m 0
South West Water FRANCIS ST_CSO_TRURO River Kenwyn 4 0 h 27m 0
South West Water KING ST_CSO_TRURO River Kenwyn Via Sws 2 0 h 26m 0
South West Water PORTLOE FINESCN_PSCSOEO_PORTLOE English Channel 1 0 h 17m 0
South West Water ST GEORGES ROAD_CSO_TRURO River Kenwyn 1 0 h 16m 0
South West Water WEBBER ST_CSO_FALMOUTH Penryn River 0 0 h 0
South West Water HENDRA RD_CSO_TRURO River Kenwyn 0 0 h 0
South West Water PORTSCATHO INLET SPS_PSCSOEO_PORTSCATHO Pencabe Drang 0 0 h 0
South West Water ROBERTS OPE_CSO_TRURO River Kenwyn[S] 0 0 h 0
South West Water ST CLEMENTS HILL_CSO_TRURO River Allen Via Sws 0 0 h 0
South West Water LEMON MEWS_CSO_TRURO River Kenwyn 0 0 h 0
South West Water TABERNACLE ST_CSO_TRURO River Kenwyn Via Sws 0 0 h 0
South West Water MORLAIX AV_CSO_FYFFES SLIPWAY Truro River 0 0 h 0
South West Water NORTH PARADE_CSO_FALMOUTH Penryn River 0 0 h 0
South West Water CALENICK ST REPEATER STATION_CSO_TRURO River Kenwyn Via Sws 0 0 h 0
South West Water FRANCIS ST_CSO_TRURO River Kenwyn 0 0 h 0
South West Water CAMPFIELD HILL_CSO_TRURO River Allen 0 0 h 0
South West Water ELLENGLAZE SPS_PSCSOEO_CUBERT Stream 0 0 h 0
South West Water WEBBER ST_CSO_FALMOUTH Penryn River 0 0 h 0
South West Water TEHIDY TERRACE_CSO_FALMOUTH Penryn River 0 0 h 0
South West Water RUZZA SPS_PSCSOEO_NEWQUAY Porth Joke 0 0 h 0
South West Water FAIRMANTLE ST CAR PARK_CSO_TRURO River Kenwyn 0 0 h 0
South West Water PORTLOE FINESCN_PSCSOEO_PORTLOE English Channel 0 0 h 0
South West Water MYLOR STW_SO_MYLOR BRIDGE Mylor Creek 0 0 h 0
South West Water CHACEWATER STW_SO_CHACEWATER Unknown 0 0 h 0
South West Water SWANPOOL SPS_PSCSOEO_FALMOUTH Swanpool 0 0 h 0
South West Water KING ST_CSO_TRURO River Kenwyn Via Sws 0 0 h 0

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.

Top of the Poops

Analysing sewage pollution by the Water Industry

Follow on Instagram

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can
Yes! Support TOTP!

© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

Full Copyright information available at: our GitHub page