It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry, then sign the petition to bring water back to public ownership.

Derbyshire Dales

Polluted by sewage 2,585 times in 2025 lasting 19,828 hours - That's 2.29 years!

Monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Select Another Constituency

Select the constituency from the drop-down
✔ means we have live data (𝑥 if not)

Live data for Derbyshire Dales in 2026

So far this year (as of 18 May 2026, 12:00) there has been 20,839 hours of sewage overflows, from 201 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 2.41 years!

Totals for Derbyshire Dales in 2025

82 Sites polluted by Severn Trent Water
2,585 sewage dumps
19,828 hours duration
That's 2.29 years. On average 7.1 times a day

Change Over Time

Take Action

Your local MP is John Whitby (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK
Post
Post

Constituencies near Derbyshire Dales

Waterways in Derbyshire Dales

We need your support!

Please consider a one-off or small recurring donation. We need your help to keep this site going.

Donate Now

Pollution Summary 2025

Here are all the reported sewage overflow totals for Derbyshire Dales 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 89 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 %
Severn Trent Water Bradwell Brook THE CRESCENT CSO 127 1,394 100
Severn Trent Water River Derwent MATLOCK LEA STW 77 1,281 100
Severn Trent Water River Ecclesbourne WIRKSWORTH STW 74 1,121 99.7
Severn Trent Water Bradwell Brook BRADWELL STW 71 1,108 100
Severn Trent Water Kniveton Brook KNIVETON STW 84 995 99.6
Severn Trent Water River Derwent WHATSTANDWELL STW 58 986 100
Severn Trent Water River Derwent MATLOCK BATH - DALE ROAD (COAL ME- 118 976 100
Severn Trent Water River Wye BAKEWELL SEWAGE TREATMENT WORKS 57 969 99.9
Severn Trent Water River Derwent BASLOW STW 86 915 100
Severn Trent Water River Derwent DARLEY DALE NO 11 CSO 84 803 99.9
Severn Trent Water Tideswell Brook TIDESWELL STW 68 772 99.9
Severn Trent Water River Wye THE POST OFFICE CSO 57 728 100
Severn Trent Water Henmore Brook HOGNASTON SEWAGE TREATMENT WORKS 61 667 94.4
Severn Trent Water Bentley Brook ASHBOURNE STW 44 638 99.9
Severn Trent Water Brailsford Brook BRAILSFORD SEWAGE TREATMENT WORKS 74 569 97.3
Severn Trent Water River Derwent HATHERSAGE STW 58 451 100
Severn Trent Water River Dove DOVERIDGE PUMPING STATION 29 366 100
Severn Trent Water River Derwent DALE ROAD NORTH CSO 71 314 99.6
Severn Trent Water River Derwent CSO @ DARLEY BRIDGE PUMPING STATION 63 299 100
Severn Trent Water Hilton Brook HILTON - EGGINGTON ROAD SPS 20 289 100
Severn Trent Water River Dove SUDBURY SEWAGE TREATMENT WORKS 41 263 99.5
Severn Trent Water River Lathkill BOWERS HALL CSO 54 262 99.4
Severn Trent Water River Trent GRINDLEFORD SEWAGE P S 35 251 77.9
Severn Trent Water Receiving Water Not Defined MH NEAR CROMFORD MILL POND 58 235 91.8
Severn Trent Water River Derwent DARLEY BRIDGE CSO 52 217 97.8
Severn Trent Water Bentley Brook CUBLEY SEWAGE TREATMENT WORKS 30 217 99.1
Severn Trent Water Cromford Canal CROMFORD - MARKET PLACE CSO 58 216 100
Severn Trent Water Digmer Brook HARTINGTON WWTW 18 182 99.6
Severn Trent Water River Derwent DALE ROAD NORTH (RLWY) CSO 44 177 99.7
Severn Trent Water River Wye HADDON ROAD PPG STN - STM/EMEG O.F 47 172 99.2
Severn Trent Water River Derwent OKER-SNITTERTON-SNITTERTON ROAD SPS 21 110 100
Severn Trent Water Thorpe Brook CHURCH LANE PUMPING STATION 19 107 87.5
Severn Trent Water Bentley Brook STONEY WAY COMBINED SEWER OVERFLOW 32 102 100
Severn Trent Water Marston Brook MARSTON MONTGOMERY STW 17 101 99.5
Severn Trent Water Biggin Brook HULLAND WARD STW 20 93 85.8
Severn Trent Water River Derwent RAILWAY BRIDGE/DALE ROAD CSO 23 86 98.8
Severn Trent Water Longford Brook YEAVELEY STW 24 78 65.8
Severn Trent Water Hilton Brook HATTON SEWAGE PUMPING STATION 11 77 100
Severn Trent Water River Dove MANOR HOUSE FARM 6 72 100
Severn Trent Water Foston Brook FOSTON PUMPING STATION 6 71 99.8
Severn Trent Water River Derwent DARLEY DALE - FOUR ENDS SPS 16 70 100
Severn Trent Water River Derwent DALE RD SOUTH-OFF OLD HACKNEY LANE 25 70 100
Severn Trent Water Henmore Brook KING EDWARD STREET CSO 21 64 100
Severn Trent Water Shirley Brook OSMASTON PUMPING STATION 16 64 99.9
Severn Trent Water Hilton Brook HILTON- MILL LANE CSO 5 52 100
Severn Trent Water River Derwent MATLOCK MH79 UDC - IMPERIAL ROAD CS 37 52 100
Severn Trent Water Lea Brook HOLLOWAY - LEA ROAD CSO 25 51 92.9
Severn Trent Water Bentley Brook WEBSTERS TERRACE CSO 22 50 99.5
Severn Trent Water River Wye KING STREET COMBINED SEWER OVERFLOW 32 50 100
Severn Trent Water Bentley Brook TANSLEY OLD COACH ROAD (POND) CSO 13 47 99.3
Severn Trent Water River Wye BASLOW ROAD CSO 16 46 99.9
Severn Trent Water Brailsford Brook BRAILSFORD COMBINED SEWER OVERFLOW 16 46 100
Severn Trent Water Bar Brook BASLOW SEWAGE P S 4 42 99.9
Severn Trent Water River Derwent RIDDINGS LANE CSO 48 41 99.3
Severn Trent Water Henmore/Scow Brook NEAR NESTLES SLUICE GATES 13 39 96.3
Severn Trent Water Henmore/Scow Brook NORTHERN AREA SEWERAGE 16 35 99.4
Severn Trent Water River Derwent LIME GROVE WALK/BANK ROAD PO CSO 61 33 100
Severn Trent Water River Derwent MH AT JUNCTION OF BLACK TOR ROAD 22 32 93.3
Severn Trent Water Dale Brook CALVER - SHEFFIELD ROAD CSO 9 27 100
Severn Trent Water Bentley Brook TANSLEY OLD COACH ROAD CSO 23 21 99.8
Severn Trent Water River Derwent ENDSOR SEWAGE P S 8 19 100
Severn Trent Water Franker Brook COWERS LANE PUMPING STATION 12 17 99.8
Severn Trent Water Bentley Brook MATLOCK-KNOWLESTON PLACE SPS 11 15 100
Severn Trent Water River Dove CROWDECOTE SEWAGE TREATMENT WORKS 9 15 100
Severn Trent Water Warney Brook TWO DALES - CHESTERFIELD RD CSO 15 14 99.8
Severn Trent Water Warney Brook TWO DALES GARAGE CSO 7 13 100
Severn Trent Water Warney Brook DARLEY DALE / DALE ROAD NORTH CSO 14 8 98.8
Severn Trent Water Bentley Brook MATLOCK GREEN_MORNINGTON RISE CSO 7 7 100
Severn Trent Water River Derwent HOMESFORD SEWAGE PUMPING STN 9 5 99
Severn Trent Water Shirley Brook SHIRLEY SEWAGE TREATMENT WORKS 5 5 100
Severn Trent Water Hood Brook HATHERSAGE MILL LANE CSO 6 4 92
Severn Trent Water Tideswell Brook LITTON COMBINED SEWER OVERFLOW 4 2 95.9
Severn Trent Water River Wye NORTH CHURCH STREET CSO 12 1 99.6
Severn Trent Water River Derwent BONSALL DALE MH AT JUNCTION 3 1 98.8
Severn Trent Water River Derwent BANK ROAD COMBINED SEWER OVERFLOW 4 1 100
Severn Trent Water Warney Brook TWO DALES - GREENWAY/ODDFORD LN CSO 6 0 100
Severn Trent Water River Derwent STATION ROAD CSO 6 0 98.8
Severn Trent Water River Derwent NORTHWOOD LANE CSO 4 0 91.4
Severn Trent Water Warney Brook TWO DALES - CHESTERFIELD ROAD CSO 3 0 99.5
Severn Trent Water River Derwent MH NEAR BONSALL CROSS 1 0 98.7
Severn Trent Water River Dove SCHOOL LANE CSO 1 0 97.1
Severn Trent Water Bentley Brook MATLOCK GREEN/LIME TREE RD CSO 1 0 99.3
Severn Trent Water River Derwent BAKEWELL ROAD / DIMPLE ROAD CSO 0 0 100
Severn Trent Water River Wye MARKET STREET CSO 0 0 99.9
Severn Trent Water River Derwent MH NR STARKHOLMES FOOTBRIDGE 0 0 0
Severn Trent Water River Wye SCHOOL LANE TERMINAL PS 0 0 100
Severn Trent Water River Derwent SEWER MH CROMFORD MEADOWS 0 0 100
Severn Trent Water River Derwent SEWER MH WOODEND LEA ROAD 0 0 100
Severn Trent Water Wyaston Brook WYASTON SEWAGE TREATMENT WORKS 0 0 99.4

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.

Top of the Poops

Analysing sewage pollution by the Water Industry

Follow on Instagram

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can
Yes! Support TOTP!

© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

Please don't scrape these pages - we can maybe share our data with you

Full Copyright information available at: our GitHub page