Top of the Poops | Constituency Sewage Map | Harrogate and Knaresborough

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Live data for Harrogate and Knaresborough in 2026

So far this year (as of 18 May 2026, 12:00) there has been 2,903 hours of sewage overflows, from 57 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s

Totals for Harrogate and Knaresborough in 2025

35 Sites polluted by Yorkshire Water

1,069 sewage dumps

3,909 hours duration

That's 5.43 months. On average 2.9 times a day

Change Over Time

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Constituencies near Harrogate and Knaresborough

Waterways in Harrogate and Knaresborough

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Harrogate and Knaresborough in 2025. 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 41 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year. Of these 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Yorkshire Water	Oak Beck	HARROGATE NORTH SEWAGE TREATMENT	93	612	99.8
Yorkshire Water	Nidd And S	KILLINGHALL/HAMPSTHWAITE/KETTLESING	69	457	91.85
Yorkshire Water	Oak Beck And Coppice Beck	HARROGATE HYDRO CSOS	269	386	95.03
Yorkshire Water	River Nidd	KNARESBOROUGH WPC WORKS	38	379	99.6
Yorkshire Water	Crimple Beck	CRIMPLE LANE CSO	55	292	99.8
Yorkshire Water	Tanner Beck	SSO AT STAVELEY	29	285	96
Yorkshire Water	Rud Beck	SHERWOOD DRIVE CSO	49	230	100
Yorkshire Water	River Nidd	MANSE LANE 57 CSO	59	199	99
Yorkshire Water	Hookstone Beck	HOOKSTONE ROAD CSO	25	140	100
Yorkshire Water	Crimple Beck	FULWITHMILL FARM N0 2 CSO	24	113	95.5
Yorkshire Water	River Nidd	CRAGG TOP COMBINED SEWER OVERFLOW	11	106	95.7
Yorkshire Water	Hookstone Beck	CSO-HARROGATE STRAY	18	90	100
Yorkshire Water	Crimple Beck Or River Crimple	BLACK SWAN CSO	27	82	99.2
Yorkshire Water	Crimple Beck	ALMSFORD AVENUE CSO	33	67	98.8
Yorkshire Water	Mill Stream	WATERSIDE 47 CSO	28	59	92.1
Yorkshire Water	River Crimple Via Sewer	CSO ADJ TO STATION BRIDGE	21	56	99.9
Yorkshire Water	New Cut	SSO AT GOLDSBOROUGH	35	52	100
Yorkshire Water	River Nidd	ABBEY ROAD NO 2 CSO	19	48	80.6
Yorkshire Water	Mill Stream	WATERSIDE 48 CSO	24	42	88.6
Yorkshire Water	River Nidd	SPITAL CROFT CSO	21	42	99.4
Yorkshire Water	Bilton Beck	BILTON LANE COMBINED SEWER OVERFLOW	23	36	92
Yorkshire Water	Jumwell Beck	LOW MOOR LANE SPS	8	27	100
Yorkshire Water	Nidd	KILLINGHALL NO 2 CSO	11	26	100
Yorkshire Water	Oak Beck	OAKDALE AVENUE CSO	18	19	100
Yorkshire Water	River Nidd	WATERSIDE 49 CSO	16	14	98.3
Yorkshire Water	Culverted Star Beck	FOREST LANE CSO	9	12	100
Yorkshire Water	Culverted Rud Beck/Publicsewer	HOOKSTONE DRIVE NO 2 CSO	9	10	92.3
Yorkshire Water	Clvrt Bilton Beck	HAMBLETON ROAD CSO	4	4	85.4
Yorkshire Water	Oak Beck	OAKDALE HARROGATE CSO	3	4	99.8
Yorkshire Water	Frogmire Dyke	BOROUGHBRIDGE ROAD CSO	5	2	98.3
Yorkshire Water	Oak Beck Via Public Sewer	UNITY GROVE CSO	5	2	85.7
Yorkshire Water	Oak Beck Via A Public Sewer	109 SKIPTON ROAD CSO	6	2	100
Yorkshire Water	Rud Beck Via Public Sewer	HOOKSTONE GRANGE WAY CSO	1	1	99.9
Yorkshire Water	Rud Beck Via A Public Sewer	WEDDERBURN SCHOOL CSO	3	1	100
Yorkshire Water	Oak Beck Via Public Sewer	35 SKIPTON ROAD CSO	1	0	94.8
Yorkshire Water	Oak Beck Via A Public Sewer	33 SKIPTON ROAD CSO	0	0	0
Yorkshire Water	Oak Beck Via A Public Sewer	83 SKIPTON ROAD CSO	0	0	100
Yorkshire Water	River Nidd	ABBEY MILL CSO	0	0	74.6
Yorkshire Water	Rud Beck Via A Public Sewer	GREENFIELDS ROAD NO3 CSO	0	0	100
Yorkshire Water	Hoohstone Beck	STRAY REIN CSO	0	0	100
Yorkshire Water	River Nidd	VILLAGE GREEN CSO	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. 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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