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River Derwent polluted by sewage 1,016 times in 2025 - lasting 9,190 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
Totals for River Derwent in 2025
13 Sites polluted by United Utilities
1,016 sewage dumps
9,190 h duration
That's 12.76 months. On average 2.8 times a day

Pollution Summary 2025

Here are all the reported sewage overflow totals for River Derwent in 2025. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
United Utilities River Derwent COCKERMOUTH WWTW 133 2,354 99.4
United Utilities River Derwent GREAT BROUGHTON WWTW 246 1,843 99.5
United Utilities River Derwent FITZ BRIDGE (LOW ROAD) CSO 106 1,177 99.5
United Utilities River Derwent KESWICK STW 77 907 99.3
United Utilities River Derwent NORTHSIDE CSO 021QB 100 849 99.8
United Utilities River Derwent PAPCASTLE PUMPING STATION (ALL0139) 85 710 100
United Utilities River Derwent GREYSOUTHEN WWTW 97 563 99.5
United Utilities River Derwent GRANGE BRIDGE PS GNGBO ALL0062 53 465 99.9
United Utilities River Derwent THE BURROUGHS CSO 022UQ 50 135 99.9
United Utilities River Derwent BELLE VUE /COCKERMOUTH PS 39 121 99.8
United Utilities River Derwent ROSTHWAITE WWTW (ROSTH) 21 46 99.3
United Utilities River Derwent THICK RIGGS CSO (022UY) 6 9 99.9
United Utilities River Derwent CAMERTON WW PUMPING STATION 3 5 99.5
United Utilities River Derwent CAMERTON WWTW CAMER 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.