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North Cornwall

Polluted by sewage 2,957 times in 2025 lasting 30,571 hours - That's 3.54 years!

Monitoring was disabled in some locations, so could be more

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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 North Cornwall in 2026

So far this year (as of 18 May 2026, 12:00) there has been 24,420 hours of sewage overflows, from 160 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 2.83 years!

Totals for North Cornwall in 2025

72 Sites polluted by South West Water
2,957 sewage dumps
30,571 hours duration
That's 3.54 years. On average 8.1 times a day

Change Over Time

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Pollution Summary 2025

Here are all the reported sewage overflow totals for North 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 2 of the total 80 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year. Of these 2 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
South West Water Penpont Water ALTARNUN STW (STORM TANK) 165 3,294 100
South West Water River Allen DELABOLE WASTEWATER TREATMENT WORKS 159 2,910 99.4
South West Water River Inny BEALS MILL WWTW 125 1,867 100
South West Water River Inny POLYPHANT PSCSO/EO 132 1,730 100
South West Water River Inny BEALS MILL PUMPING STATION 77 1,618 100
South West Water River Tamar ST LEONARDS WWTW 113 1,421 100
South West Water Mother Iveys Bay ST MERRYN COMBINED SEWER OVERFLOW 107 1,380 100
South West Water River Inny TREBULLETT STW 95 1,319 100
South West Water Lowley Brook SOUTH PETHERWIN PSCSO/EO 69 1,313 100
South West Water River Ottery NORTH PETHERWIN WWTW 74 1,302 100
South West Water Coombe Valley Stream KILKHAMPTON WWTW 100 1,243 99.5
South West Water River Kensey EGLOSKERRY STW 116 1,174 98.2
South West Water Bude Bay HELEBRIDGE WWTW 119 1,035 74.6
South West Water River Inny LEZANT PSCSO/EO 59 901 98.1
South West Water Little Petherick Creek LITTLE PETHERICK WWTW 112 815 99.7
South West Water Unknown STOKE CLIMSLAND STW 105 802 100
South West Water River Camel/St Lawrence Str BODMIN NANSTALLON WWTW 47 791 100
South West Water Trevone Bay TREVONE PUMPING STATION 23 441 99.4
South West Water Peneont Water WAR MEMORIAL PSCSO/EO 25 432 100
South West Water River Yeolm YEOLMBRIDGE CSO 47 403 98.3
South West Water River Lyner BATHPOOL STW 26 399 98.4
South West Water River Kensey NEWPORT INDUSTRIAL ESTATE CSO 118 386 100
South West Water River Ottery YEOLMBRIDGE PS 96 353 99.9
South West Water River Camel CAMELFORD WWTW 45 322 99.9
South West Water Unknown TREKNOW STW 17 296 100
South West Water Widemouth Bay MADEIRA DRIVE PSCSO/EO 41 243 100
South West Water River Ottery EGLOSKERRY PUMPING STATION 22 236 100
South West Water Atlantic Ocean TINTAGEL CASTLE ROAD PUMP STATION 26 215 100
South West Water Atlantic Ocean BOSSINEY BACK LANE PUMPING STATION 22 206 100
South West Water Lowley Brook SCARNE INDUSTRIAL ESTATE PSCSO/EO 24 179 100
South West Water Treyarnon Stream TREHEMBORNE PS 22 140 100
South West Water River Camel OLD COACH ROAD 17 135 100
South West Water Unknown WEEK ST MARY STW 40 121 100
South West Water River Amble CHAPEL AMBLE WWTW 20 117 100
South West Water Camel Estuary WADEBRIDGE PS 18 106 100
South West Water River Allen ST TEATH WASTEWATER TREATMENT WORKS 101 101 97.6
South West Water River Lynher NORTH HILL WWTW 19 99 98.4
South West Water River Camel Estuary PADSTOW FORESHORE PUMPING STATION 26 98 100
South West Water Alren Stream OLD MILL PS 25 98 91.3
South West Water River Menahyl ST COLUMB STW 16 74 100
South West Water River Menalhyl ST MAWGAN PSCSO/EO 10 61 100
South West Water River Need JACOBSTOW STW 13 49 99.2
South West Water Unknown ST GENNYS STW 19 34 99.7
South West Water River Allen ST MABYN WWTW 7 30 99.1
South West Water Unknown ST BREWARD STW 41 29 100
South West Water Bodmin Town Leat OLD JAIL COMBINED SEWER OVERFLOW 42 27 98.5
South West Water River Tamar LAWHITTON WWTW CSO 12 25 100
South West Water River Strat BARN ORCHARD COTTAGES PS 4 24 98.4
South West Water Coombe Valley Str STIBB SEWAGE TREATMENT WORKS 14 22 100
South West Water St Lawrence Stream BLOWING HOUSE LANE CSO 23 19 99.4
South West Water River Otter LANGORE PUMPING STATION 21 19 100
South West Water St Lawrence Stream DRAGONS PIT COMBINED SEWER OVERFLOW 36 17 100
South West Water Haven, Atlantic Ocean PORT ISAAC PUMPING STATION 16 15 100
South West Water Camel Estuary PADSTOW HARBOUR PUMPING STATION 3 9 100
South West Water Camel Estuary PORTHILLY COVE PS 5 8 100
South West Water Coastal Stream PORT GAVERNE CSO 9 6 100
South West Water River Neet STRATTON PS 3 6 100
South West Water Atlantic Ocean BOSCASTLE HARBOUR PUMPING STATION 5 5 100
South West Water Camel Estuary ROCK PUMPING STATION 3 5 100
South West Water Camel Estuary MOYLE ROAD CSO 16 3 100
South West Water Lanivet Stream LANIVET INN COMBINED SEWER OVERFLOW 11 2 100
South West Water Penpont LEWANNICK STW 2 1 100
South West Water River Kensey ST THOMAS ROAD CSO 5 1 100
South West Water River Neet NANNY MOORES BRIDGE CSO 1 0 98.6
South West Water River Neet THE STRAND CSO 6 0 98.8
South West Water River Kensey TREGADILLET PS 3 0 100
South West Water Camel Estuary EGLOSHAYLE PUMPING STATION 5 0 100
South West Water River Menathyl COLUMB MAJOR CSO 1 0 100
South West Water Port Issac Bay, Atlantic PORT ISAAC WWTW CSO 3 0 100
South West Water River Camel MARKET SQUARE CSO 4 0 100
South West Water River Camel METHODIST CHURCH CSO 3 0 100
South West Water River Neet CASTLE PUMPING STATION 1 0 100
South West Water River Inny BEALS MILL NO 1 CSO 0 0 0
South West Water River Inny BEALS MILL NO 2 CSO 0 0 0
South West Water River Neet CROOKLETS CAR PARK CSO 0 0 100
South West Water River Thrushel LIFTON WASTEWATER TREATMENT WORKS 0 0 100
South West Water River Ottery NORTH PETHERWIN PSCSO/EO 0 0 100
South West Water Mill Leat PENPONT VIEW CSO 0 0 100
South West Water Porth Stream ROSEWASTIS PSCSO/EO 0 0 100
South West Water Bude Bay SUMMERLEAZE CAR PARK CSO 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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Analysing sewage pollution by the Water Industry

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