Derbyshire Dales

Polluted by sewage 3,669 times in 2024 lasting 28,238 hours - That's 3.27 years!

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

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✔ means we have experimental daily data since 2023

Live data for Derbyshire Dales in 2025

So far this year (as of May 28, 2025, 11:30 PM) there has been 8,183 hours of sewage overflows - that's 0.95 years!

Totals for Derbyshire Dales in 2024

86 Sites polluted by Severn Trent Water

3,669 sewage dumps

28,238 hours duration

That's 3.27 years! On average 10.1 times a day

Change Over Time

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Constituencies near Derbyshire Dales

Waterways in Derbyshire Dales

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Derbyshire Dales, 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.

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Derbyshire Dales 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 91 CSO locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Severn Trent Water	River Derwent	WHATSTANDWELL STW	112	2,063	99.8
Severn Trent Water	Digmer Brook	HARTINGTON WWTW	103	1,894	95.6
Severn Trent Water	River Derwent	MATLOCK LEA STW	123	1,773	95.6
Severn Trent Water	River Lathkill	BOWERS HALL CSO	124	1,727	97.1
Severn Trent Water	Brailsford Brook	BRAILSFORD SEWAGE TREATMENT WORKS	138	1,712	72.1
Severn Trent Water	River Wye	BAKEWELL SEWAGE TREATMENT WORKS	95	1,626	100
Severn Trent Water	River Derwent	BASLOW STW	116	1,316	100
Severn Trent Water	River Wye	HADDON ROAD PPG STN - STM/EMEG O.F	88	1,168	100
Severn Trent Water	Bradwell Brook	BRADWELL STW	87	968	100
Severn Trent Water	River Ecclesbourne	WIRKSWORTH STW	74	846	75.6
Severn Trent Water	Tideswell Brook	TIDESWELL STW	92	836	96
Severn Trent Water	River Derwent	DARLEY DALE NO 11 CSO	91	818	98.9
Severn Trent Water	Hilton Brook	HILTON - EGGINGTON ROAD SPS	51	714	96.6
Severn Trent Water	River Derwent	RIDDINGS LANE CSO	113	640	100
Severn Trent Water	Kniveton Brook	KNIVETON STW	94	615	94.7
Severn Trent Water	Bradwell Brook	THE CRESCENT CSO	97	615	95.3
Severn Trent Water	River Derwent	MATLOCK BATH - DALE ROAD (COAL ME-	109	601	97.3
Severn Trent Water	River Dove	DOVERIDGE PUMPING STATION	43	514	99.9
Severn Trent Water	River Derwent	DARLEY BRIDGE CSO	72	469	100
Severn Trent Water	Longford Brook	YEAVELEY STW	65	451	39.45
Severn Trent Water	Bentley Brook	WEBSTERS TERRACE CSO	76	440	93.2
Severn Trent Water	River Derwent	HATHERSAGE STW	72	427	100
Severn Trent Water	Henmore Brook	HOGNASTON SEWAGE TREATMENT WORKS	102	426	99.7
Severn Trent Water	River Dove	SUDBURY SEWAGE TREATMENT WORKS	59	424	100
Severn Trent Water	Hilton Brook	HATTON SEWAGE PUMPING STATION	30	388	100
Severn Trent Water	Biggin Brook	HULLAND WARD STW	54	342	99.8
Severn Trent Water	River Derwent	DALE ROAD NORTH CSO	76	293	100
Severn Trent Water	Receiving Water Not Defined	MH NEAR CROMFORD MILL POND	78	287	100
Severn Trent Water	Cromford Canal	CROMFORD - MARKET PLACE CSO	61	276	99.4
Severn Trent Water	River Derwent	OKER-SNITTERTON-SNITTERTON ROAD SPS	54	267	98.6
Severn Trent Water	Bentley Brook	ASHBOURNE STW	28	247	100
Severn Trent Water	River Dove	MANOR HOUSE FARM	21	234	100
Severn Trent Water	Wyaston Brook	WYASTON SEWAGE TREATMENT WORKS	116	229	98.5
Severn Trent Water	Bentley Brook	CUBLEY SEWAGE TREATMENT WORKS	36	188	100
Severn Trent Water	River Derwent	CSO @ DARLEY BRIDGE PUMPING STATION	48	186	100
Severn Trent Water	River Derwent	DALE ROAD NORTH (RLWY) CSO	48	171	100
Severn Trent Water	River Wye	THE POST OFFICE CSO	22	154	53.3
Severn Trent Water	Bentley Brook	TANSLEY OLD COACH ROAD CSO	67	152	96.1
Severn Trent Water	Shirley Brook	OSMASTON PUMPING STATION	19	138	100
Severn Trent Water	Brailsford Brook	BRAILSFORD COMBINED SEWER OVERFLOW	40	137	100
Severn Trent Water	Foston Brook	FOSTON PUMPING STATION	12	102	100
Severn Trent Water	Hilton Brook	HILTON SPS	13	100	98.6
Severn Trent Water	River Trent	GRINDLEFORD SEWAGE P S	24	94	100
Severn Trent Water	Thorpe Brook	CHURCH LANE PUMPING STATION	12	85	100
Severn Trent Water	River Derwent	DARLEY DALE - FOUR ENDS SPS	20	75	98
Severn Trent Water	Henmore Brook	KING EDWARD STREET CSO	26	75	98.3
Severn Trent Water	Marston Brook	MARSTON MONTGOMERY STW	22	75	97.1
Severn Trent Water	River Derwent	MH AT JUNCTION OF BLACK TOR ROAD	30	68	93.6
Severn Trent Water	River Derwent	DALE RD SOUTH-OFF OLD HACKNEY LANE	24	67	100
Severn Trent Water	Franker Brook	COWERS LANE PUMPING STATION	18	66	96.7
Severn Trent Water	River Derwent	SEWER MH CROMFORD MEADOWS	9	66	100
Severn Trent Water	River Derwent	MH NR STARKHOLMES FOOTBRIDGE	35	65	100
Severn Trent Water	River Derwent	LIME GROVE WALK/BANK ROAD PO CSO	84	65	92.3
Severn Trent Water	Lea Brook	HOLLOWAY - LEA ROAD CSO	12	52	91.4
Severn Trent Water	Dale Brook	CALVER - SHEFFIELD ROAD CSO	4	52	100
Severn Trent Water	Bentley Brook	TANSLEY OLD COACH ROAD (POND) CSO	17	51	97.9
Severn Trent Water	Henmore/Scow Brook	NEAR NESTLES SLUICE GATES	21	36	95.2
Severn Trent Water	Bentley Brook	STONEY WAY COMBINED SEWER OVERFLOW	16	35	100
Severn Trent Water	River Wye	BASLOW ROAD CSO	20	33	100
Severn Trent Water	Bar Brook	BASLOW SEWAGE P S	5	32	100
Severn Trent Water	Hood Brook	HATHERSAGE MILL LANE CSO	12	19	100
Severn Trent Water	River Derwent	RAILWAY BRIDGE/DALE ROAD CSO	40	19	99.2
Severn Trent Water	Warney Brook	TWO DALES - CHESTERFIELD RD CSO	17	18	89
Severn Trent Water	River Derwent	MATLOCK MH79 UDC - IMPERIAL ROAD CS	37	11	100
Severn Trent Water	River Wye	KING STREET COMBINED SEWER OVERFLOW	9	10	100
Severn Trent Water	River Derwent	HOMESFORD SEWAGE PUMPING STN	13	9	93.2
Severn Trent Water	River Derwent	ENDSOR SEWAGE P S	9	7	98.8
Severn Trent Water	Bentley Brook	MATLOCK-KNOWLESTON PLACE SPS	9	7	100
Severn Trent Water	Bentley Brook	MATLOCK GREEN_MORNINGTON RISE CSO	6	6	92.1
Severn Trent Water	River Wye	MARKET STREET CSO	9	6	100
Severn Trent Water	Warney Brook	TWO DALES - CHESTERFIELD ROAD CSO	5	4	100
Severn Trent Water	River Derwent	BONSALL DALE MH AT JUNCTION	7	4	100
Severn Trent Water	Warney Brook	DARLEY DALE / DALE ROAD NORTH CSO	14	3	100
Severn Trent Water	River Derwent	CHURCH ROAD CSO	24	3	100
Severn Trent Water	River Dove	CROWDECOTE SEWAGE TREATMENT WORKS	1	2	100
Severn Trent Water	Tideswell Brook	LITTON COMBINED SEWER OVERFLOW	4	2	95.9
Severn Trent Water	Warney Brook	TWO DALES - GREENWAY/ODDFORD LN CSO	9	1	94.5
Severn Trent Water	River Derwent	NORTHWOOD LANE CSO	4	0	100
Severn Trent Water	Shirley Brook	SHIRLEY SEWAGE TREATMENT WORKS	2	0	99.9
Severn Trent Water	River Wye	NORTH CHURCH STREET CSO	5	0	100
Severn Trent Water	River Dove	SCHOOL LANE CSO	3	0	98.5
Severn Trent Water	River Derwent	BANK ROAD COMBINED SEWER OVERFLOW	2	0	100
Severn Trent Water	Groundwater	SHELDON STW	1	0	100
Severn Trent Water	River Derwent	BAKEWELL ROAD / DIMPLE ROAD CSO	1	0	100
Severn Trent Water	Warney Brook	TWO DALES GARAGE CSO	6	0	100
Severn Trent Water	River Derwent	STATION ROAD CSO	2	0	100
Severn Trent Water	River Wye	SCHOOL LANE TERMINAL PS	0	0	98.8
Severn Trent Water	River Derwent	SEWER MH WOODEND LEA ROAD	0	0	100
Severn Trent Water	River Derwent	MH NEAR BONSALL CROSS	0	0	99.8
Severn Trent Water	Bentley Brook	MATLOCK GREEN/LIME TREE RD CSO	0	0	100
Severn Trent Water	Bentley Brook	WOLD RESERVOIR & MATLOCK BANK - SWS	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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Derbyshire Dales Polluted by sewage 3,669 times in 2024 lasting 28,238 hours - That's 3.27 years! Monitoring fell below 50% in some locations so could be more

Derbyshire Dales