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Derbyshire Dales was polluted by sewage 3,411 times in 2023
lasting 28,488 hours - that's 3.3 years!
- but monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Derbyshire Dales in 2023
86 Sites polluted by Severn Trent Water
3,411 sewage dumps
28,488 h duration
That's 3.3 years! On average 9.3 times a day
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Derbyshire Dales in 2023. 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 3 of the total 94 CSO locations had reporting enabled for less than half the year, of which 3 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Severn Trent Water River Wye BAKEWELL SEWAGE TREATMENT WORKS 127 2,285 97.5
Severn Trent Water River Lathkill BOWERS HALL CSO 130 1,969 95
Severn Trent Water River Wye HADDON ROAD PPG STN - STM/EMEG O.F 122 1,925 88.1
Severn Trent Water Tideswell Brook TIDESWELL STW 125 1,702 99.2
Severn Trent Water Bradwell Brook BRADWELL STW 107 1,700 97
Severn Trent Water River Derwent BASLOW STW 115 1,684 57.2
Severn Trent Water Digmer Brook HARTINGTON WWTW 65 1,287 97.3
Severn Trent Water Kniveton Brook KNIVETON STW 86 1,141 94.2
Severn Trent Water River Derwent RIDDINGS LANE CSO 123 1,071 97.2
Severn Trent Water Longford Brook YEAVELEY STW 168 1,019 96.9
Severn Trent Water River Derwent DARLEY DALE NO 11 CSO 95 955 98.9
Severn Trent Water River Derwent WHATSTANDWELL STW 57 852 82.8
Severn Trent Water River Derwent HATHERSAGE STW 62 725 37
Severn Trent Water River Derwent DARLEY BRIDGE CSO 83 645 100
Severn Trent Water River Derwent MATLOCK BATH - DALE ROAD (COAL ME- 117 640 99.9
Severn Trent Water Hilton Brook HILTON - EGGINGTON ROAD SPS 54 617 96.7
Severn Trent Water River Ecclesbourne WIRKSWORTH STW 41 569 90.2
Severn Trent Water Cromford Canal CROMFORD - MARKET PLACE CSO 104 545 95.5
Severn Trent Water River Derwent MATLOCK LEA STW 44 527 98
Severn Trent Water River Dove SUDBURY SEWAGE TREATMENT WORKS 139 478 99.6
Severn Trent Water Hilton Brook HATTON SEWAGE PUMPING STATION 31 438 99.8
Severn Trent Water River Derwent DALE ROAD NORTH CSO 71 419 74.7
Severn Trent Water Biggin Brook HULLAND WARD STW 68 413 90.6
Severn Trent Water Receiving Water Not Defined MH NEAR CROMFORD MILL POND 85 331 89.8
Severn Trent Water Henmore Brook HOGNASTON SEWAGE TREATMENT WORKS 92 306 96.5
Severn Trent Water River Derwent SEWER MH CROMFORD MEADOWS 30 303 96.2
Severn Trent Water River Derwent DARLEY DALE - FOUR ENDS SPS 54 240 99.7
Severn Trent Water Bentley Brook ASHBOURNE STW 22 227 100
Severn Trent Water Bentley Brook WEBSTERS TERRACE CSO 39 223 99.2
Severn Trent Water River Trent GRINDLEFORD SEWAGE P S 28 217 99.9
Severn Trent Water River Derwent RAILWAY BRIDGE/DALE ROAD CSO 72 203 100
Severn Trent Water River Derwent CSO @ DARLEY BRIDGE PUMPING STATION 36 199 98.4
Severn Trent Water River Derwent DALE ROAD NORTH (RLWY) CSO 54 199 95.3
Severn Trent Water River Derwent MH AT JUNCTION OF BLACK TOR ROAD 27 196 98.9
Severn Trent Water River Dove MANOR HOUSE FARM 20 194 99.8
Severn Trent Water Lea Brook HOLLOWAY - LEA ROAD CSO 47 175 99.9
Severn Trent Water River Derwent OKER-SNITTERTON-SNITTERTON ROAD SPS 32 118 99
Severn Trent Water Brailsford Brook BRAILSFORD SEWAGE TREATMENT WORKS 21 117 92.9
Severn Trent Water Shirley Brook OSMASTON PUMPING STATION 30 116 98.3
Severn Trent Water Brailsford Brook BRAILSFORD COMBINED SEWER OVERFLOW 34 101 100
Severn Trent Water River Derwent DALE RD SOUTH-OFF OLD HACKNEY LANE 37 95 100
Severn Trent Water Marston Brook MARSTON MONTGOMERY STW 23 94 99.9
Severn Trent Water Thorpe Brook CHURCH LANE PUMPING STATION 14 85 98.5
Severn Trent Water Dale Brook CALVER - SHEFFIELD ROAD CSO 27 81 100
Severn Trent Water Franker Brook COWERS LANE PUMPING STATION 20 78 99.7
Severn Trent Water River Derwent CHURCH ROAD CSO 35 76 97.9
Severn Trent Water Bradwell Brook THE CRESCENT CSO 7 71 94.1
Severn Trent Water Henmore Brook KING EDWARD STREET CSO 18 68 99.9
Severn Trent Water River Derwent MH NR STARKHOLMES FOOTBRIDGE 22 59 77.5
Severn Trent Water River Derwent ENDSOR SEWAGE P S 20 50 100
Severn Trent Water Bentley Brook MATLOCK GREEN_MORNINGTON RISE CSO 6 47 100
Severn Trent Water River Derwent MATLOCK MH79 UDC - IMPERIAL ROAD CS 41 43 97.7
Severn Trent Water Hilton Brook HILTON SPS 6 41 98.4
Severn Trent Water Bentley Brook TANSLEY OLD COACH ROAD CSO 27 40 99.2
Severn Trent Water Bar Brook BASLOW SEWAGE P S 4 39 78.9
Severn Trent Water Warney Brook TWO DALES - CHESTERFIELD RD CSO 18 36 98.1
Severn Trent Water River Wye BASLOW ROAD CSO 17 35 84.7
Severn Trent Water Bentley Brook TANSLEY OLD COACH ROAD (POND) CSO 11 35 99.9
Severn Trent Water River Derwent LIME GROVE WALK/BANK ROAD PO CSO 13 34 95.4
Severn Trent Water Hood Brook HATHERSAGE MILL LANE CSO 10 32 99.9
Severn Trent Water River Derwent HOMESFORD SEWAGE PUMPING STN 11 32 99.9
Severn Trent Water Henmore/Scow Brook NEAR NESTLES SLUICE GATES 23 32 93.6
Severn Trent Water Bentley Brook MATLOCK-KNOWLESTON PLACE SPS 11 30 97.9
Severn Trent Water River Wye MARKET STREET CSO 7 19 98.9
Severn Trent Water Shirley Brook SHIRLEY SEWAGE TREATMENT WORKS 9 19 95.8
Severn Trent Water Bentley Brook CUBLEY SEWAGE TREATMENT WORKS 5 15 100
Severn Trent Water River Dove DOVERIDGE PUMPING STATION 3 13 100
Severn Trent Water Warney Brook DARLEY DALE / DALE ROAD NORTH CSO 11 11 99.9
Severn Trent Water Tideswell Brook LITTON COMBINED SEWER OVERFLOW 3 10 98.1
Severn Trent Water River Wye KING STREET COMBINED SEWER OVERFLOW 15 9 96.1
Severn Trent Water Bentley Brook WOLD RESERVOIR & MATLOCK BANK - SWS 1 9 99
Severn Trent Water Warney Brook TWO DALES - CHESTERFIELD ROAD CSO 4 8 97.2
Severn Trent Water Warney Brook TWO DALES - GREENWAY/ODDFORD LN CSO 4 6 83.8
Severn Trent Water River Derwent BONSALL DALE MH AT JUNCTION 3 5 64
Severn Trent Water Bentley Brook STONEY WAY COMBINED SEWER OVERFLOW 6 4 97.3
Severn Trent Water River Wye THE POST OFFICE CSO 1 4 99.6
Severn Trent Water River Derwent BAKEWELL ROAD / DIMPLE ROAD CSO 11 3 89.1
Severn Trent Water Wyaston Brook WYASTON SEWAGE TREATMENT WORKS 7 3 93.8
Severn Trent Water Warney Brook TWO DALES GARAGE CSO 18 2 100
Severn Trent Water River Dove CROWDECOTE SEWAGE TREATMENT WORKS 4 2 94.9
Severn Trent Water River Derwent NORTHWOOD LANE CSO 6 2 98.6
Severn Trent Water River Wye NORTH CHURCH STREET CSO 7 1 95.1
Severn Trent Water River Derwent STATION ROAD CSO 4 0 93.3
Severn Trent Water River Dove SCHOOL LANE CSO 1 0 70.2
Severn Trent Water River Derwent SEWER MH WOODEND LEA ROAD 1 0 97
Severn Trent Water River Derwent BANK ROAD COMBINED SEWER OVERFLOW 2 0 87.5
Severn Trent Water Foston Brook FOSTON PUMPING STATION 0 0 100
Severn Trent Water Warney Brook DARLEY DALE - DALE ROAD NORTH CSO 0 0 0
Severn Trent Water Groundwater GREAT HUCKLOW STW 0 0 0
Severn Trent Water Bentley Brook MATLOCK GREEN/LIME TREE RD CSO 0 0 95.5
Severn Trent Water River Wye SCHOOL LANE TERMINAL PS 0 0 80.5
Severn Trent Water River Derwent NEAR MASSON HILL 0 0 0
Severn Trent Water Groundwater SHELDON STW 0 0 49.95
Severn Trent Water River Derwent MH NEAR BONSALL CROSS 0 0 97.8

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. 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.