North Cornwall was polluted by sewage 3,611 times in 2024
lasting 40,730 hours - that's 4.71 years!

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Live data for North Cornwall in 2025

So far this year (as of Apr 16, 2025, 6:15 PM) there has been 11,311 hours of sewage overflows - that's 1.31 years!

Totals for North Cornwall in 2024

74 Sites polluted by South West Water

3,611 sewage dumps
40,730 h duration

That's 4.71 years! On average 9.9 times a day

Change Over Time

Take Action

Your local MP is Ben Maguire (Liberal Democrat) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near North Cornwall

Waterways in North Cornwall

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for North Cornwall, 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.

Pollution Summary 2024

Here are all the reported sewage overflow totals for North Cornwall in 2024. 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 0 of the total 80 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
South West Water	River Allen	DELABOLE WASTEWATER TREATMENT WORKS	236	4,058	99.85
South West Water	Penpont Water	ALTARNUN STW (STORM TANK)	206	3,917	100
South West Water	Coombe Valley Stream	KILKHAMPTON WWTW	131	2,204	99.8
South West Water	River Inny	POLYPHANT PSCSO/EO	119	2,197	99.5
South West Water	River Inny	BEALS MILL WWTW	126	2,171	98.4
South West Water	River Inny	BEALS MILL NO 2 CSO	87	1,953	100
South West Water	Mother Iveys Bay	ST MERRYN COMBINED SEWER OVERFLOW	121	1,822	100
South West Water	River Inny	LEZANT PSCSO/EO	99	1,735	96.8
South West Water	River Inny	TREBULLETT STW	113	1,707	99.6
South West Water	River Kensey	EGLOSKERRY STW	141	1,665	93.3
South West Water	River Inny	BEALS MILL PUMPING STATION	86	1,643	100
South West Water	River Camel/St Lawrence Str	BODMIN NANSTALLON WWTW	92	1,625	100
South West Water	River Tamar	ST LEONARDS WWTW	115	1,618	97.4
South West Water	Bude Bay	HELEBRIDGE WWTW	153	1,411	96.65
South West Water	Lowley Brook	SOUTH PETHERWIN PSCSO/EO	72	1,373	100
South West Water	River Ottery	NORTH PETHERWIN WWTW	83	987	98.1
South West Water	Little Petherick Creek	LITTLE PETHERICK WWTW	107	908	98.3
South West Water	Trevone Bay	TREVONE PUMPING STATION	43	862	99.7
South West Water	River Inny	BEALS MILL NO 1 CSO	64	716	100
South West Water	Unknown	STOKE CLIMSLAND STW	102	589	100
South West Water	River Yeolm	YEOLMBRIDGE CSO	59	455	98.5
South West Water	River Camel	CAMELFORD WWTW	46	441	100
South West Water	Widemouth Bay	MADEIRA DRIVE PSCSO/EO	52	368	100
South West Water	River Lynher	NORTH HILL WWTW	85	340	100
South West Water	River Menahyl	ST COLUMB STW	48	332	100
South West Water	Atlantic Ocean	BOSSINEY BACK LANE PUMPING STATION	39	324	100
South West Water	River Lyner	BATHPOOL STW	20	296	99.9
South West Water	River Allen	ST MABYN WWTW	17	290	100
South West Water	River Kensey	NEWPORT INDUSTRIAL ESTATE CSO	92	273	95.9
South West Water	River Thrushel	LIFTON WASTEWATER TREATMENT WORKS	46	248	98.3
South West Water	Unknown	WEEK ST MARY STW	47	215	100
South West Water	River Ottery	YEOLMBRIDGE PS	86	212	100
South West Water	Lowley Brook	SCARNE INDUSTRIAL ESTATE PSCSO/EO	30	181	100
South West Water	River Need	JACOBSTOW STW	19	172	100
South West Water	River Camel Estuary	PADSTOW FORESHORE PUMPING STATION	33	156	99.7
South West Water	Atlantic Ocean	TINTAGEL CASTLE ROAD PUMP STATION	19	118	99.8
South West Water	River Amble	CHAPEL AMBLE WWTW	28	116	100
South West Water	River Allen	ST TEATH WASTEWATER TREATMENT WORKS	119	102	100
South West Water	River Ottery	EGLOSKERRY PUMPING STATION	15	95	99.6
South West Water	St Lawrence Stream	DRAGONS PIT COMBINED SEWER OVERFLOW	75	86	100
South West Water	Unknown	TREKNOW STW	8	84	100
South West Water	Camel Estuary	WADEBRIDGE PS	22	74	100
South West Water	Treyarnon Stream	TREHEMBORNE PS	14	74	100
South West Water	River Menalhyl	ST MAWGAN PSCSO/EO	14	69	100
South West Water	St Lawrence Stream	BLOWING HOUSE LANE CSO	55	65	100
South West Water	River Camel	OLD COACH ROAD	9	51	100
South West Water	Unknown	ST GENNYS STW	19	38	100
South West Water	River Otter	LANGORE PUMPING STATION	16	31	100
South West Water	River Tamar	LAWHITTON WWTW CSO	14	28	99.9
South West Water	Camel Estuary	PADSTOW HARBOUR PUMPING STATION	3	28	100
South West Water	Camel Estuary	PORTHILLY COVE PS	16	26	100
South West Water	Peneont Water	WAR MEMORIAL PSCSO/EO	7	25	100
South West Water	Bodmin Town Leat	OLD JAIL COMBINED SEWER OVERFLOW	36	25	100
South West Water	River Strat	BARN ORCHARD COTTAGES PS	3	22	100
South West Water	Penpont	LEWANNICK STW	12	19	99.9
South West Water	Coombe Valley Str	STIBB SEWAGE TREATMENT WORKS	7	10	100
South West Water	Coastal Stream	PORT GAVERNE CSO	8	8	100
South West Water	Port Issac Bay, Atlantic	PORT ISAAC WWTW CSO	10	7	98.3
South West Water	Camel Estuary	MOYLE ROAD CSO	14	6	100
South West Water	River Kensey	TREGADILLET PS	3	5	100
South West Water	Alren Stream	OLD MILL PS	7	5	99.8
South West Water	Haven, Atlantic Ocean	PORT ISAAC PUMPING STATION	5	3	100
South West Water	Camel Estuary	ROCK PUMPING STATION	2	2	100
South West Water	Lanivet Stream	LANIVET INN COMBINED SEWER OVERFLOW	14	2	100
South West Water	River Neet	CASTLE PUMPING STATION	5	1	99.8
South West Water	River Neet	THE STRAND CSO	7	1	100
South West Water	River Camel	MARKET SQUARE CSO	1	1	99.7
South West Water	River Neet	NANNY MOORES BRIDGE CSO	1	1	93.6
South West Water	River Neet	STRATTON PS	1	0	99.5
South West Water	Bude Bay	SUMMERLEAZE CAR PARK CSO	1	0	100
South West Water	River Menathyl	COLUMB MAJOR CSO	3	0	100
South West Water	River Kensey	ST THOMAS ROAD CSO	1	0	100
South West Water	Camel Estuary	EGLOSHAYLE PUMPING STATION	1	0	97.5
South West Water	River Camel	METHODIST CHURCH CSO	1	0	100
South West Water	River Neet	CROOKLETS CAR PARK CSO	0	0	100
South West Water	Atlantic Ocean	BOSCASTLE HARBOUR PUMPING STATION	0	0	76.4
South West Water	Porth Stream	ROSEWASTIS PSCSO/EO	0	0	100
South West Water	Unknown	ST BREWARD STW	0	0	99.9
South West Water	Mill Leat	PENPONT VIEW CSO	0	0	55
South West Water	River Ottery	NORTH PETHERWIN PSCSO/EO	0	0	99.9

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. 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.

Analysing sewage pollution by the Water Industry

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