Top of the Poops | Waterway | River Nidd | Polluted by Yorkshire Water

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Totals for River Nidd in 2025

17 Sites polluted by Yorkshire Water

663 sewage dumps
6,002 h duration

That's 8.34 months. On average 1.8 times a day

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Constituencies along River Nidd

Places along River Nidd

Pollution Summary 2025

Here are all the reported sewage overflow totals for River Nidd in 2025. Sometimes sewage can be being dumped for months at a time.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Yorkshire Water	River Nidd	DARLEY SEWAGE TREATMENT WORKS	130	1,641	100
Yorkshire Water	River Nidd	PATELEY BRIDGE STW	94	1,325	100
Yorkshire Water	River Nidd	NORTH DEIGHTON STW	62	1,091	100
Yorkshire Water	River Nidd	KNARESBOROUGH WPC WORKS	38	379	99.6
Yorkshire Water	River Nidd	NUN MONKTON SEWAGE TREATMENT WORKS	50	329	99.9
Yorkshire Water	River Nidd	DACRE SEWAGE PUMPING STATION	48	281	100
Yorkshire Water	River Nidd	KIRK HAMMERTON STW	52	221	99.85
Yorkshire Water	River Nidd	CATTAL SEWAGE TREATMENT WORKS	28	219	100
Yorkshire Water	River Nidd	MANSE LANE 57 CSO	59	199	99
Yorkshire Water	River Nidd	CRAGG TOP COMBINED SEWER OVERFLOW	11	106	95.7
Yorkshire Water	River Nidd	ABBEY ROAD NO 2 CSO	19	48	80.6
Yorkshire Water	River Nidd	GLASSHOUSES BRIDGE CSO	18	47	100
Yorkshire Water	River Nidd	SPITAL CROFT CSO	21	42	99.4
Yorkshire Water	River Nidd	SHOW GROUND CSO	8	39	100
Yorkshire Water	River Nidd	WATERSIDE 49 CSO	16	14	98.3
Yorkshire Water	River Nidd	BIRSTWITH NO2 SPS	5	14	100
Yorkshire Water	River Nidd	MOOR MONKTON EAST SPS	4	1	100
Yorkshire Water	River Nidd	ABBEY MILL CSO	0	0	74.6
Yorkshire Water	River Nidd	VILLAGE GREEN CSO	0	0	100
Yorkshire Water	River Nidd	PROPOSED SSO NO 14 MANHOLE	0	0	58.8

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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Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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