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River Derwent polluted by sewage 2,732 times in 2023 - lasting 16,576 hours

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
Totals for River Derwent in 2023
64 Sites polluted by Severn Trent Water
2,732 sewage dumps
16,576 h duration
That's 1.92 years! On average 7.5 times a day

Pollution Summary 2023

Here are all the reported sewage overflow totals for River Derwent in 2023. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Severn Trent Water River Derwent DUFFIELD STW 139 1,749 100
Severn Trent Water River Derwent BASLOW STW 115 1,684 57.2
Severn Trent Water River Derwent DERBY SEWAGE TREATMENT WORKS 96 1,083 99.8
Severn Trent Water River Derwent RIDDINGS LANE CSO 123 1,071 97.2
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 River Derwent AREAS MILFORD & BELPER/SM & EM O/F 173 586 94.17
Severn Trent Water River Derwent ALVASTON CSO 82 575 100
Severn Trent Water River Derwent MATLOCK LEA STW 44 527 98
Severn Trent Water River Derwent THE RAILWAY LINE CSO 80 447 91
Severn Trent Water River Derwent DALE ROAD NORTH CSO 71 419 74.7
Severn Trent Water River Derwent SEWER MH CROMFORD MEADOWS 30 303 96.2
Severn Trent Water River Derwent KEDLESTON ROAD CSO 88 284 100
Severn Trent Water River Derwent AMBERGATE PS - STORM/EMERGENCY O/F 37 265 64.4
Severn Trent Water River Derwent GREEN LANE PUMPING STATION 40 257 83.1
Severn Trent Water River Derwent DARLEY DALE - FOUR ENDS SPS 54 240 99.7
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 Derwent BELPER SEWAGE TREATMENT WORKS 12 188 98.4
Severn Trent Water River Derwent EASTGATE PENTAGON ISLAND CSO 34 187 99.1
Severn Trent Water River Derwent OPPOSITE THE LODGE CSO 59 178 98.4
Severn Trent Water River Derwent BRIDGE STREET CSO 97 147 92.3
Severn Trent Water River Derwent DERBY ROAD CSO 57 130 96.9
Severn Trent Water River Derwent CARBOLITE CSO 32 124 100
Severn Trent Water River Derwent OKER-SNITTERTON-SNITTERTON ROAD SPS 32 118 99
Severn Trent Water River Derwent STATION APPROACH CSO 46 112 98.7
Severn Trent Water River Derwent SANDRINGHAM DRIVE CSO 44 110 98.9
Severn Trent Water River Derwent WAYZGOOSE COMBINED SEWER OVERFLOW 33 101 96.1
Severn Trent Water River Derwent DALE RD SOUTH-OFF OLD HACKNEY LANE 37 95 100
Severn Trent Water River Derwent DRAYCOTT SPS - EMERGENCY OVERFLOW 9 89 97.5
Severn Trent Water River Derwent BRIDGE FOOT COMBINED SEWER OVERFLOW 16 86 85.1
Severn Trent Water River Derwent BRIDGE STREET-FIELD LANE JCN CSO 81 78 99.9
Severn Trent Water River Derwent CHURCH ROAD CSO 35 76 97.9
Severn Trent Water River Derwent BROADHOLME PUMPING STATION 13 70 88.4
Severn Trent Water River Derwent MH NR STARKHOLMES FOOTBRIDGE 22 59 77.5
Severn Trent Water River Derwent DERBY ROAD CSO 18 55 99.85
Severn Trent Water River Derwent ENDSOR SEWAGE P S 20 50 100
Severn Trent Water River Derwent ANGLERS LANE CSO 13 50 99.8
Severn Trent Water River Derwent ALLESTREE SEWAGE PUMPING STATION 18 49 100
Severn Trent Water River Derwent MATLOCK MH79 UDC - IMPERIAL ROAD CS 41 43 97.7
Severn Trent Water River Derwent NOTTINGHAM ROAD CSO 24 40 93.5
Severn Trent Water River Derwent LIME GROVE WALK/BANK ROAD PO CSO 13 34 95.4
Severn Trent Water River Derwent HOMESFORD SEWAGE PUMPING STN 11 32 99.9
Severn Trent Water River Derwent MEADOW ROAD SPS 2 31 93.1
Severn Trent Water River Derwent DARLEY ABBEY CSO 35 19 98
Severn Trent Water River Derwent DERBY ROAD 18 18 98.7
Severn Trent Water River Derwent BARGATE ROAD CSO 5 17 98.6
Severn Trent Water River Derwent DARLEY ABBEY/ALLESTREE SW-STM/EMG 27 15 94.2
Severn Trent Water River Derwent WILMORTON COLLEGE/HARROW STREET CSO 17 14 98.8
Severn Trent Water River Derwent CASTLE ORCHARD PUMPING STATION 4 12 100
Severn Trent Water River Derwent DERBY ROAD/NEWBRIDGE ROAD JCT CSO 2 5 100
Severn Trent Water River Derwent BONSALL DALE MH AT JUNCTION 3 5 64
Severn Trent Water River Derwent BAKEWELL ROAD / DIMPLE ROAD CSO 11 3 89.1
Severn Trent Water River Derwent NORTHWOOD LANE CSO 6 2 98.6
Severn Trent Water River Derwent STATION ROAD CSO 4 0 93.3
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 River Derwent CASTLE ORCHARD CSO 1 0 99.9
Severn Trent Water River Derwent THE FLEET COMBINED SEWER OVERFLOW 2 0 46.6
Severn Trent Water River Derwent NEAR MASSON HILL 0 0 0
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.