River Derwent polluted by sewage 1,977 times in 2022 - lasting 8,942 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
Totals for River Derwent in 2022
58 Sites polluted by Severn Trent Water
1,977 sewage dumps
8,942 h duration
That's 1.03 years! On average 5.4 times a day

Pollution Summary 2022

Here are all the reported sewage overflow totals for River Derwent in 2022. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page - This is because there is an invalid grid reference on the pollution consent - so we don't know where the CSO is. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Severn Trent Water River Derwent BASLOW STW 97 1,513 100
Severn Trent Water River Derwent DUFFIELD STW 71 800 99.7
Severn Trent Water River Derwent DARLEY BRIDGE CSO 77 608 98.9
Severn Trent Water River Derwent DARLEY DALE NO 11 CSO 66 432 97.9
Severn Trent Water River Derwent BRIDGE STREET CSO 102 424 97.4
Severn Trent Water River Derwent DERBY SEWAGE TREATMENT WORKS 45 367 100
Severn Trent Water River Derwent BELPER SEWAGE TREATMENT WORKS 35 350 90.7
Severn Trent Water River Derwent RIDDINGS LANE CSO 62 348 48.9
Severn Trent Water River Derwent DALE ROAD NORTH CSO 57 344 99.9
Severn Trent Water River Derwent MATLOCK BATH - DALE ROAD (COAL ME- 96 336 76.2
Severn Trent Water River Derwent HATHERSAGE STW 44 293 60.2
Severn Trent Water River Derwent THE RAILWAY LINE CSO 53 285 99.7
Severn Trent Water River Derwent ALVASTON CSO 60 261 100
Severn Trent Water River Derwent OPPOSITE THE LODGE CSO 46 251 100
Severn Trent Water River Derwent AREAS MILFORD & BELPER/SM & EM O/F 81 239 53.3
Severn Trent Water River Derwent OKER-SNITTERTON-SNITTERTON ROAD SPS 37 157 86.9
Severn Trent Water River Derwent DARLEY DALE - FOUR ENDS SPS 38 155 22.3
Severn Trent Water River Derwent KEDLESTON ROAD CSO 69 152 100
Severn Trent Water River Derwent CSO @ DARLEY BRIDGE PUMPING STATION 40 129 91
Severn Trent Water River Derwent DALE ROAD NORTH (RLWY) CSO 42 127 99.9
Severn Trent Water River Derwent MH AT JUNCTION OF BLACK TOR ROAD 33 126 97.2
Severn Trent Water River Derwent RAILWAY BRIDGE/DALE ROAD CSO 71 110 99.3
Severn Trent Water River Derwent EASTGATE PENTAGON ISLAND CSO 35 106 90.75
Severn Trent Water River Derwent DERBY ROAD CSO 31 102 83.3
Severn Trent Water River Derwent CARBOLITE CSO 26 83 99.1
Severn Trent Water River Derwent LIME GROVE WALK/BANK ROAD PO CSO 41 72 88.4
Severn Trent Water River Derwent BRIDGE FOOT COMBINED SEWER OVERFLOW 15 69 50.5
Severn Trent Water River Derwent MATLOCK MH79 UDC - IMPERIAL ROAD CS 41 64 100
Severn Trent Water River Derwent GREEN LANE PUMPING STATION 26 60 86.2
Severn Trent Water River Derwent BARGATE ROAD CSO 16 57 74.5
Severn Trent Water River Derwent AMBERGATE PS - STORM/EMERGENCY O/F 8 53 99.6
Severn Trent Water River Derwent DALE RD SOUTH-OFF OLD HACKNEY LANE 34 52 100
Severn Trent Water River Derwent MH NR STARKHOLMES FOOTBRIDGE 21 49 91.8
Severn Trent Water River Derwent MATLOCK LEA STW 5 47 99.8
Severn Trent Water River Derwent DERBY ROAD CSO 22 35 98.8
Severn Trent Water River Derwent STATION APPROACH CSO 28 35 81.4
Severn Trent Water River Derwent ANGLERS LANE CSO 43 35 47.5
Severn Trent Water River Derwent SANDRINGHAM DRIVE CSO 29 35 66.8
Severn Trent Water River Derwent BRIDGE STREET-FIELD LANE JCN CSO 70 34 88.4
Severn Trent Water River Derwent HOMESFORD SEWAGE PUMPING STN 18 24 91.7
Severn Trent Water River Derwent DARLEY ABBEY CSO 39 23 96.1
Severn Trent Water River Derwent ALLESTREE SEWAGE PUMPING STATION 9 16 90.3
Severn Trent Water River Derwent DRAYCOTT SPS - EMERGENCY OVERFLOW 3 13 76.7
Severn Trent Water River Derwent BROADHOLME PUMPING STATION 5 12 100
Severn Trent Water River Derwent CASTLE ORCHARD PUMPING STATION 3 5 100
Severn Trent Water River Derwent DARLEY ABBEY/ALLESTREE SW-STM/EMG 15 5 98.25
Severn Trent Water River Derwent BAKEWELL ROAD / DIMPLE ROAD CSO 6 5 100
Severn Trent Water River Derwent NOTTINGHAM ROAD CSO 9 4 39.9
Severn Trent Water River Derwent WILMORTON COLLEGE/HARROW STREET CSO 11 4 38.1
Severn Trent Water River Derwent DERBY ROAD 9 2 23.9
Severn Trent Water River Derwent BANK ROAD COMBINED SEWER OVERFLOW 8 2 100
Severn Trent Water River Derwent STATION ROAD CSO 7 1 94.6
Severn Trent Water River Derwent THE FLEET COMBINED SEWER OVERFLOW 3 1 15.1
Severn Trent Water River Derwent NORTHWOOD LANE CSO 10 1 93.3
Severn Trent Water River Derwent BONSALL DALE MH AT JUNCTION 4 0 99.9
Severn Trent Water River Derwent WHATSTANDWELL STW 1 0 100
Severn Trent Water River Derwent CASTLE ORCHARD CSO 2 0 99.7
Severn Trent Water River Derwent ENDSOR SEWAGE P S 2 0 77.1
Severn Trent Water River Derwent DERBY ROAD/NEWBRIDGE ROAD JCT CSO 0 0 99.9
Severn Trent Water River Derwent MEADOW ROAD SPS 0 0 24.2
Severn Trent Water River Derwent SEWER MH WOODEND LEA ROAD 0 0 100
Severn Trent Water River Derwent SEWER MH CROMFORD MEADOWS 0 0 99.8
Severn Trent Water River Derwent NEAR MASSON HILL 0 0 100
Severn Trent Water River Derwent MH NEAR BONSALL CROSS 0 0 82.5

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.