East Grinstead and Uckfield was polluted by sewage 1,541 times in 2024
lasting 15,521 hours - that's 1.8 years!
- but monitoring was disabled in some locations, so could be more

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Live data for East Grinstead and Uckfield in 2025

So far this year (as of Apr 16, 2025, 5:45 PM) there has been 4,765 hours of sewage overflows - that's 0.55 years!

Totals for East Grinstead and Uckfield in 2024

37 Sites polluted by Southern Water, Thames Water

1,541 sewage dumps
15,521 h duration

That's 1.8 years! On average 4.2 times a day

Change Over Time

Take Action

Your local MP is Mims Davies (Conservative) - Find out more about their interests, donors, and voting at They Work For You

Constituencies near East Grinstead and Uckfield

Waterways in East Grinstead and Uckfield

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for East Grinstead and Uckfield, 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 East Grinstead and Uckfield 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 1 of the total 42 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Southern Water	River Ouse	DANEHILL S.T.W.	110	1,862	99.9
Southern Water	Cockhaise Brook	HORSTED KEYNES WWTW	99	1,755	99.7
Southern Water	River Uck	BUXTED WWTW	97	1,456	96.2
Southern Water	River Medway	HARTFIELD ROAD CSO	95	979	99.9
Southern Water	Shortbridge Stream	FAIRWARP PUMPING STATION	64	951	99.9
Southern Water	Bevern Stream	BARCOMBE NEW S.T.W.	105	867	99.9
Southern Water	River Adur	WIVELSFIELD S.T.W.	81	860	99.9
Southern Water	River Ouse	BALCOMBE WASTEWATER TREATMENT WORKS	98	783	92.45
Southern Water	River Ouse	SCAYNES HILL WWTW	59	638	99.8
Southern Water	River Ouse	JACKIES LANE NEWICK CEO	75	632	99.9
Southern Water	Freshwater River	HAZELDEN PS CSO	71	627	99.8
Southern Water	Shortbridge Stream	MARESFIELD WWTW	45	521	99.7
Southern Water	River Ouse	NEWICK WWTW	56	504	99.7
Southern Water	Coombe Brook	WEST HOATHLY S.T.W.	54	503	99.2
Southern Water	Freshwater River	PARTRIDGE PLACE PUMPING STATION	61	466	99.9
Southern Water	Lywood Stream	ARDINGLY WWTW	36	375	99.9
Southern Water	River Medway	WITHYPITTS PUMPING STATION	51	318	99.9
Southern Water	Pippingford Brook	NUTLEY WWTW	32	216	99.8
Southern Water	North End Stream.River Ouse	COOKSBRIDGE WWPS COOKSBRIDGE	28	209	99.9
Southern Water	River Medway	CSO AT STATION ROAD - FOREST ROW	29	206	47.6
Thames Water	Gatwick Stream	Pease Pottage	19	196	98.3
Southern Water	Ridgewood Stream	UCKFIELD WASTEWATER TREATMENT WORKS	19	178	98.4
Southern Water	Freshwater River	COOPERS GREEN PS, UCKFIELD	28	90	99.2
Southern Water	River Medway	HAZEL WAY PUMPING STATION	18	89	99.8
Southern Water	Balcombe Lake	ST JAMES COTTAGE BALCOMBE CSO	16	42	95.2
Southern Water	Eden Vale Stream	CHARLWOODS ROAD EAST GRINSTEAD CSO	15	38	76
Southern Water	Sunnyside Stream	LUXFORD LN-EAST GRINSTEAD S.T.W.	8	35	99.7
Southern Water	Freshwater River	HIGH STREET UCKFIELD CSO	26	30	100
Southern Water	Freshwater River	NURSERY LANE PUMPING STATION	14	20	99.9
Southern Water	Longford Stream	SOUTH STREET CHAILEY SPS	5	20	100
Southern Water	Freshwater River	BLACKMORES FARM CSO	3	11	65.5
Southern Water	Lywood Stream River Ouse	ARDINGLY WWTW, ARDINGLY	4	7	99.9
Southern Water	Cockhaise Brook	WEST HOATHLY CEO	3	7	32.5
Southern Water	R Medway	DALLAWAY GDNS E GRINSTEAD CSO	10	6	81.8
Southern Water	Freshwater River	BELL LANE PUMPING STATION	4	6	99.6
Southern Water	Unamed Medway Via Pond	MOUNT NODDY CEM. EAST GRINSTEAD CSO	1	0	85.7
Southern Water	Freshwater River	FRAMFIELD ROAD SEWAGE PUMPING	2	0	99.9
Southern Water	Framfield Stream	CSO, FRAMFIELD ROAD, UCKFIELD, E/S	0	0	70
Southern Water	River Ouze	SCHOOL LANE DANEHILL CSO	0	0	74.6
Southern Water	Shovelstrode Stream	GLEAVE CLOSE EAST GRINSTEAD CEO	0	0	99.7
Southern Water	Felbridge Wtr	FERNHILL CLOSE CRAWLEY DOWN	0	0	0
Southern Water	Tickerage Stream	BRITTS FARM BUXTED CEO	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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