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Fal Estuary

Polluted by sewage 1,644 times in 2025 - lasting 13,633 hours - That's 1.58 years!

Totals for Fal Estuary in 2025

49 Sites polluted by South West Water

1,644 sewage dumps

13,633 hours duration

That's 1.58 years. On average 4.5 times a day

How does Fal Estuary compare?

Fal Estuary was the #1 most polluted shellfish area in England & Wales, by duration of sewage overflows, as reported by the water companies

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Fal Estuary in 2025.

Accuracy Warning

We use data from the water companies, but we are seeing many anomalies that make us believe that location information is quite poor. The situation is likely far worse than reported here.

In particular: Totals on this page can differ from totals in the Ranked Shellfish page - number on this page are higher - this is due to a lack of standardization on shellfish area names. This page more accurately counts the differing names. For example "Solway" and "SOLWAY" are counted as different in the rankings, but correctly aggregated here.

Other CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s may also be located nearby, however the water companies claim that these do not affect the water quality here.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
South West Water	Unknown	CHACEWATER STW	159	3,542	99.7
South West Water	River Kennall	39 ST MICHAELS COMBINED SEWER OF	153	2,438	100
South West Water	Mylor Creek	MYLOR BRIDGE WWTW	83	1,699	100
South West Water	Penryn River	COMMERCIAL ROAD PUMPING STATION	75	857	100
South West Water	Tresillian River Estuary	LADOCK VALLEY STW	55	715	100
South West Water	Truro River Estuary	NEWHAM WASTEWATER TREATMENT WORKS	51	668	100
South West Water	Praze Stream	PRAZE TANK CSO	49	663	93.7
South West Water	Penryn River	FALMOUTH STW INLET & STORM PS	38	582	100
South West Water	Mylor Creek	MYLOR BRIDGE PSCSO/EO	38	390	100
South West Water	Penryn River	CSO IN HIGH STREET	101	352	100
South West Water	Carnon River	CARNON DOWNS WWTW	21	337	99.1
South West Water	Pill Creek	LOWER TREVILLA PUMPING STATION	26	223	100
South West Water	Penryn River	CSO AT NORTH PARADE	97	212	100
South West Water	Carnon River	QUENCHWELL PUMPING STATION	27	182	100
South West Water	Freshwater	BOSVIGO LANE CSO	8	95	100
South West Water	Penryn River	CSO AT DUNSTANVILLE TERRACE	47	85	100
South West Water	River Fal	TREGONY BRIDGE PUMPING STATION	10	64	100
South West Water	River Kenwyn[S]	ROBERTS OPE CSO	38	56	100
South West Water	River Carnon Estuary	DEVORAN PUMPING STATION	9	55	100
South West Water	Penryn River	CSO OFF PENDARVES ROAD	32	49	100
South West Water	Penryn River	CSO AT KILLIGREW STREET	37	41	100
South West Water	Unknown	BLACKWATER STW	41	38	100
South West Water	River Kenwyn	VICTORIA SQUARE CSO	41	36	97.9
South West Water	River Allen	TRELANDER HIGHWAY CSO	46	32	100
South West Water	River Kenwyn	EDWARD STREET CSO	57	31	98
South West Water	Penryn River	ST THOMAS STREET CSO	23	25	100
South West Water	Penryn River	FLUSHING PUMPING STATION	12	23	100
South West Water	Carrick Roads	ST MAWES NO.1 PS	34	22	100
South West Water	River Allen	OLD BRIDGE STREET CAR PARK CSO	18	17	100
South West Water	River Tinney	CALENICK PUMPING STATION	6	17	100
South West Water	Mylor Creek	MYLOR BRIDGE WWTW	4	14	100
South West Water	Penryn River	GROVE PLACE NO.1 CSO	10	12	100
South West Water	Penryn River	OLD HILL PS	10	12	100
South West Water	Unknown	CHACEWATER STW	11	10	96.3
South West Water	Truro River	NEWHAM ROAD PUMPING STATION	5	8	100
South West Water	River Allen	PAULS TERRACE CSO	8	3	94
South West Water	River Kenwyn	HENDRA ROAD CSO	12	2	91.9
South West Water	River Kenwyn	ST GEORGES ROAD (REAR OF NO16) CSO	8	2	100
South West Water	River Kenwyn Via Sws	CALENICK STREET CSO	120	1	99
South West Water	River Allen Via Sws	ST CLEMENT'S HILL CSO	4	1	100
South West Water	River Allen	CAMPFIELD HILL CSO	3	1	100
South West Water	Truro River	MORLAIX AVENUE (FYFFES SLIPWAY) CSO	2	0	96.8
South West Water	Penryn River	TEHIDY TERRACE CSO	3	0	92.3
South West Water	River Kenwyn	FRANCES STREET CSO TRURO	2	0	100
South West Water	River Kenwyn	FAIRMANTLE STREET CSO	2	0	100
South West Water	River Kenwyn Via Sws	KING STREET CSO	3	0	100
South West Water	Penryn River	FALMOUTH STW INLET & STORM PS	1	0	100
South West Water	River Kenwyn Via Sws	TABERNACLE STREET CSO	2	0	100
South West Water	River Kenwyn	LEMON MEWS CSO	2	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.

Analysing sewage pollution by the Water Industry

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