Calder Valley

Polluted by sewage 2,938 times in 2024 lasting 16,478 hours - That's 1.91 years!

Monitoring fell below 50% in some locations so could be more

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Constituency

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✔ means we have experimental daily data since 2023

Totals for Calder Valley in 2024

63 Sites polluted by Yorkshire Water

2,938 sewage dumps

16,478 hours duration

That's 1.91 years! On average 8 times a day

Change Over Time

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Constituencies near Calder Valley

Waterways in Calder Valley

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Calder Valley 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 73 CSO locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Yorkshire Water	Black Brook	WEST VALE CSO	177	2,082	100
Yorkshire Water	River Calder	EASTWOOD WWTW	138	1,980	99.4
Yorkshire Water	River Calder	BONEGATE LN, ALEGER ST & THORNHILL	331	1,747	99.97
Yorkshire Water	River Calder	HIGH ROYD SEWAGE TREATMENT WORKS	219	1,683	99.87
Yorkshire Water	River Calder	PRINCESS BRIDGE NO 2 CSO	116	1,168	100
Yorkshire Water	River Calder	EASTWOOD NO2 CSO	101	870	100
Yorkshire Water	River Calder	BREARLEY MAIN SEWER CSO	92	689	97.9
Yorkshire Water	Colden Water	DELIGHT SPS	49	643	99.1
Yorkshire Water	River Ryburn	RIPPONDEN WOOD STW	80	478	100
Yorkshire Water	Luddenden Brook	NEW ROAD CSO	59	426	80.4
Yorkshire Water	Bottom Hall Beck	WYKE BECK CSO	89	387	98.2
Yorkshire Water	Cragg Brook	CRAGG ROAD NO 2 CSO	44	310	100
Yorkshire Water	Oak Hill Clough	FIELDEN TERRACE CSO	100	302	99.8
Yorkshire Water	Canker Dyke	HUDDERSFIELD ROAD/SOUTH LANE CSO	73	273	99.7
Yorkshire Water	Clifton Beck	WYKE OLD LANE CSO	80	272	100
Yorkshire Water	Canker Dyke	HUDDERSFIELD ROAD CSO	87	265	99.7
Yorkshire Water	Wyke Beck	BAILIFF BRIDGE CSO	114	242	95.23
Yorkshire Water	Canker Dyke	WISTONS LANE/ELLAND LINK CSO	47	206	100
Yorkshire Water	River Calder	ELLEN HOUSE ROAD	28	199	100
Yorkshire Water	River Calder	FIELDING STREET CSO	38	195	100
Yorkshire Water	River Calder	ASHENHURST ROAD	75	189	99.9
Yorkshire Water	Barsey Clough	BARSEY GREEN STW	31	179	99.8
Yorkshire Water	Hebden Water	SALEM CRICKET GROUND CSO	19	173	79.7
Yorkshire Water	River Calder	ELLAND LOWFIELDS SPS	55	139	99.95
Yorkshire Water	Black Brook	SADDLEWORTH ROAD CSO	37	129	100
Yorkshire Water	River Calder	BURNLEY ROAD CORNHOLME CSO	30	113	100
Yorkshire Water	River Calder	WOODHOUSE LANE CSO	71	104	99.9
Yorkshire Water	River Calder	HAZELWOOD STREET CSO	36	95	99
Yorkshire Water	River Calder	WEST VALE	34	93	100
Yorkshire Water	Walsden Water	LONGFIELD ROAD	26	89	96.8
Yorkshire Water	River Calder	POLLARD STREET NO 2 CSO	34	84	100
Yorkshire Water	Hebden Water	HEPTONSTALL ROAD CSO	22	66	100
Yorkshire Water	Hebden Water	OLD GATE CSO	25	65	100
Yorkshire Water	River Calder	BRIDGE LANE/MARKET STREET	11	61	92.8
Yorkshire Water	River Calder	BIRDS ROYD LANE CSO	55	55	100
Yorkshire Water	River Calder	BRAMSTON STREET CSO	35	54	45.1
Yorkshire Water	Culverted Holywell Brook	HOLYWELL BROOK CSO	5	48	93.2
Yorkshire Water	Clifton Beck	HOYLE HOUSE BRIDGE CSO	30	44	100
Yorkshire Water	Black Brook	HOYLES MEMORIAL GARDENS CSO	28	38	99.5
Yorkshire Water	River Calder	RIVER STREET CSO	16	31	51.4
Yorkshire Water	River Calder	LOWER EDGE ROAD CSO	21	28	93.2
Yorkshire Water	Canker Dyke	EASTGATE, ELLAND CSO	30	27	100
Yorkshire Water	Holywell Brook	STAINLAND ROAD CSO	14	21	99.9
Yorkshire Water	Black Brook	BROW BRIDGE CSO	21	18	99.8
Yorkshire Water	Ibbot Royd Clough	IBBOT ROYD CSO	7	14	99.9
Yorkshire Water	River Calder	MITCHELL STREET CSO	7	13	78.9
Yorkshire Water	River Calder	FERNHILL CSO	11	13	95.2
Yorkshire Water	Carver Clough	CARVER CLOUGH NO 2 CSO	6	12	100
Yorkshire Water	Holywell Brook	FOREST HILL ROAD CSO	13	10	96.1
Yorkshire Water	River Calder	DYEHOUSE LANE CSO	27	7	100
Yorkshire Water	River Calder	GAS WORKS LANE	1	5	99.9
Yorkshire Water	Hebden Water	LOWER MILL CSO	5	4	100
Yorkshire Water	River Calder	ELLAND LANE CSO	5	3	100
Yorkshire Water	Holywell Brook	STAINLAND ROAD CSO	8	2	92.7
Yorkshire Water	Hebden Water	BIRCHCLIFFE ROAD CSO	4	1	100
Yorkshire Water	Black Brook	HOULTS LANE CSO	4	1	79.2
Yorkshire Water	Black Brook	SUNNYBANK CSO	6	1	100
Yorkshire Water	Culverted White Lee Clough	MIDGELEY ROAD CSO	3	1	99.9
Yorkshire Water	River Calder	PARK ROAD CSO	3	0	99.9
Yorkshire Water	River Calder	LORDS LANE BRIGHOUSE CSO	1	0	100
Yorkshire Water	Black Brook	ROCHDALE ROAD CSO	2	0	99.5
Yorkshire Water	River Calder	SCOUT ROAD CSO	1	0	100
Yorkshire Water	Calder And S	EAST COWICK SEWAGE PUMPING STATION	1	0	99.9
Yorkshire Water	River Calder	PARK ROAD SPS	0	0	100
Yorkshire Water	River Calder	CROW NEST BRIDGE CSO	0	0	100
Yorkshire Water	River Calder	HANGINGROYD ROAD CSO	0	0	98.6
Yorkshire Water	River Calder	LILLANDS LANE CSO	0	0	100
Yorkshire Water	River Calder	THE DRIVE/CALDENE AVENUE CSO	0	0	98.7
Yorkshire Water	River Ryburn	OLD BRIDGE INN CSO	0	0	100
Yorkshire Water	River Calder	REDACRE STW	0	0	99.8
Yorkshire Water	Walsden Water	SKEW BRIDGE CSO	0	0	91.9
Yorkshire Water	Walsden Water	HALL STREET SSO	0	0	96.6
Yorkshire Water	River Calder	MILLGATE SPS	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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Calder Valley Polluted by sewage 2,938 times in 2024 lasting 16,478 hours - That's 1.91 years! Monitoring fell below 50% in some locations so could be more

Calder Valley