South East Cornwall was polluted by sewage 4,966 times in 2024
lasting 50,747 hours - that's 5.87 years!

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Live data for South East Cornwall in 2025

So far this year (as of Apr 15, 2025, 10:30 AM) there has been 10,471 hours of sewage overflows - that's 1.21 years!

Totals for South East Cornwall in 2024

89 Sites polluted by South West Water

4,966 sewage dumps
50,747 h duration

That's 5.87 years! On average 13.6 times a day

Change Over Time

Take Action

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Constituencies near South East Cornwall

Waterways in South East Cornwall

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for South East 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 South East 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 104 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 Tamar	METHERELL WWTW	217	4,637	100
South West Water	River Tamar	GUNNISLAKE WWTW	244	3,284	100
South West Water	St Neot River	ST NEOT STW	245	2,521	99.9
South West Water	River Lynher	GOLBERDON STW	148	2,451	100
South West Water	River Fowey	COULSON PARK PUMPING STATION	126	2,364	99.1
South West Water	Tremar Stream	ST CLEER WASTEWATER TREATMENT WORKS	125	2,323	100
South West Water	River Fowey	COMMONMOOR STW	160	2,245	100
South West Water	River Seaton	MENHENIOT WWTW	121	1,942	97.2
South West Water	River Lerryn	LERRYN PSCSO/EO	101	1,913	99.8
South West Water	River Seaton	MINIONS STW	163	1,743	99
South West Water	Unknown	ST AUSTELL NORTH STW	94	1,678	100
South West Water	River Tamar	LATCHLEY STW	119	1,654	100
South West Water	English Channel	SEATON PUMPING STATION	90	1,590	99.7
South West Water	River Pol	PELYNT WASTEWATER TREATMENT WORKS	99	1,504	91.7
South West Water	River Tamar Estuary	ST DOMINICK WWTW	131	1,481	97
South West Water	River Loveny	CHAPEL CAR PARK PSCSO/EO	81	1,317	100
South West Water	Whitsand Bay	PORTWRINKLE PSCSO/EO	66	1,229	97.7
South West Water	River Tamar	CHILSWORTHY WWTW	174	1,156	98
South West Water	River Tamar	ST DOMINICK PUMPING STATION	80	1,150	100
South West Water	Haye Valley Stream	CALLINGTON WWTW	74	1,128	100
South West Water	River Tamar	HAREWOOD ROAD CSO	152	987	98.6
South West Water	Cawsand Bay Estaurine Via Sws	CAWSAND SOUTH PUMPING STATION	53	887	99.7
South West Water	River Seaton	CROWSNEST STW	73	819	99.4
South West Water	Landrake Stream	LANDRAKE WASTEWATER TREATMENT WORKS	57	808	100
South West Water	Pont Pill	LANREATH PUMPING STATION	56	668	100
South West Water	River Tamar	PLAYING FIELDS PUMPING STATION	114	666	100
South West Water	East Looe River	LISKEARD STW	64	620	99.6
South West Water	St John'S Lake	TORPOINT WASTEWATER TREATMENT WORKS	55	516	100
South West Water	Polbathic Lake	ST GERMANS WWTW	37	373	100
South West Water	Millbrook Lake	MILLBROOK STW	27	359	100
South West Water	Unknown	HARROWBARROW WWTW	79	355	97.7
South West Water	West Looe River	DULOE STW	118	342	100
South West Water	River Tiddy	PENSILVA PUMPING STATION	27	313	100
South West Water	River Lynher Estuary	ANTONY STW (INLET TO WORKS) SSO	71	304	76.3
South West Water	Haye Valley Stream	HAYE ROAD COMBINED SEWER OVERFLOW	79	266	95.5
South West Water	Looe River	HEALTH CENTRE CAR PARK PSEO/CSO	75	246	100
South West Water	Unnamed To West Looe Rivr	DOBWALLS SPS	21	180	100
South West Water	Saltmill Creek	RIVERVIEW PSCSO/EO	20	175	100
South West Water	River Lyner	FORDER NO 1 PSCSO/EO	25	173	97.2
South West Water	River Lynher	HATT WASTEWATER TREATMENT WORKS	16	170	99.6
South West Water	English Channel	POLPERRO WWTW	26	163	96.3
South West Water	Unknown	RILLA MILL WWTW	19	151	86.2
South West Water	Looe Bay	HANNAFORE PUMPING STATION	59	136	100
South West Water	Hamoaze	MACEY STEPS CSO	61	129	97.4
South West Water	Plymouth Sound	CATTEDOWN ROAD PUMPING STATION	31	114	100
South West Water	Un-Named Watercourse	TREDINNICK STW	36	111	100
South West Water	Looe Bay	PLAIDY PUMP STATION	72	96	100
South West Water	River Lynher	PILLATON WASTEWATER TREATMEMT WORKS	12	94	98.5
South West Water	Looe River	WEST LOOE SQUARE CSO	29	91	100
South West Water	Plymouth Sound	CHAPELDOWN PUMPING STATION	40	81	100
South West Water	River Tamar Via Sws	GUNNISLAKE NO.2 CSO	70	81	100
South West Water	Saltmill Creek	HOMER PARK CSO	10	69	100
South West Water	River Tamar	CARGREEN PSCSO/EO	44	67	99.4
South West Water	River Tamar	ROWING CLUB NO2 CSO	38	67	100
South West Water	St Mellion Stream	ST MELLION PUMPING STATION	19	65	100
South West Water	East Looe River	SUNGIRT LANE CSO	21	60	100
South West Water	English Channel	DOWNDERRY	15	60	99.1
South West Water	Cawsand Bay	KINGSAND SEWAGE PUMPING STATION	65	59	100
South West Water	Saltmill Creek	ADIT LANE CSO	57	56	91.7
South West Water	River Tamar	LOWER KELLY PSCSO/EO	26	54	100
South West Water	River Tamar	THANCKES PARK PUMPING STATION	52	51	100
South West Water	Looe River	LOOE BULLER QUAY	10	46	24.3
South West Water	East Looe River	TREWIDLAND STW	18	38	100
South West Water	Polbathic Stream	POLBATHIC VILLAGE PS	16	28	100
South West Water	East Looe River	NEW ROAD CSO	6	24	100
South West Water	River Seaton	FACTORY HOUSES PUMPING STATION	9	21	100
South West Water	Blunts Stream	BLUNTS STW	15	19	100
South West Water	River Seaton	WIDEGATES WWTW	31	17	100
South West Water	River Lynher	SHEVIOCK STW SO	11	15	100
South West Water	River Tamar Estuary	COOMBE ROAD CSO	8	14	91.7
South West Water	River Tamar Estuary	COWDRY CLOSE CSO	20	11	100
South West Water	Cawsand Bay	NORTH ROCK SEWAGE PUMPING STATION	10	11	99.9
South West Water	River Tiddy	QUETHIOCK WWTW	7	10	100
South West Water	River Fowey	EAST TAPHOUSE WWTW	13	10	99.9
South West Water	St Johns Leat	ST JOHN STW	16	8	80.6
South West Water	River Lyner	FORDER NO 2 PSCSO/EO	6	8	97.2
South West Water	River Lyner	LANDRAKE PUMPING STATION	8	6	95
South West Water	River Tamar	KINGSWOOD ROAD PUMPING STATION	1	4	100
South West Water	River Seaton	CHURCH SQUARE CSO	6	4	100
South West Water	River Tamar	BRUNEL BRIDGE CSO	21	3	100
South West Water	River Fowey Estuary	BODINNICK COMBINED SEWER OVERFLOW	4	2	91.7
South West Water	River Tamar	ROWING CLUB NO1 CSO	16	2	100
South West Water	River Tamar Estuary	WATERSIDE PUMPING STATION	4	2	100
South West Water	River Tamar	THE QUAY COMBINED SEWER OVERFLOW	10	1	99.4
South West Water	Tamar Estuary	OLD FERRY ROAD CSO	5	1	99.4
South West Water	River Fowey Estuary	POLRUAN QUAY PS	5	1	100
South West Water	Millbrook Via Sws	DAWES LANE COMBINED SEWER OVERFLOW	6	1	100
South West Water	Par Sands	RESCORLA CSO	4	0	69.1
South West Water	River Lynher Estuary	MOORLANDS PSCSO/EO	1	0	100
South West Water	Whitsand Bay	PORTWRINKLE TANK CSO	0	0	97.7
South West Water	River Seaton	SCAWNS HILL CSO	0	0	95.9
South West Water	River Tamar	GUNNISLAKE NO.1 CSO	0	0	98.8
South West Water	River Fowey	LANTEGLOS PSCSO/EO	0	0	100
South West Water	River Tamar Estuary	CULVER ROAD CSO	0	0	100
South West Water	River Lyner	UPTON CROSS COMBINED SEWER OVERFLOW	0	0	97.9
South West Water	East Looe River	VALLEY VIEW PSCSO/EO	0	0	99.8
South West Water	East Looe River	MINIONS CSO	0	0	95.8
South West Water	West Looe River	ST KEYNE NO.1 PSCSO/EO	0	0	99.8
South West Water	Stream	ST MELLION PUMPING STATION	0	0	100
South West Water	Saltmill Creek	RIVERVIEW CSO	0	0	100
South West Water	River Tamar Estuary	SPENCER GARDENS CSO	0	0	100
South West Water	Hamoaze	WILCOVE STW	0	0	95.8
South West Water	River Seaton	LAKE LANE PUMPING STATION	0	0	100
South West Water	Polbathic Lake	LYNHER PSCSO/EO	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. 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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