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Here are all the reported sewage overflow totals for River Calder in 2025. Sometimes sewage can be being dumped for months at a time.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Calder | BILLINGTON WWTW | 124 | 1,551 | 100 |
| United Utilities | River Calder | WHALLEY WASTEWATER TREAMENT WORKS | 91 | 1,006 | 100 |
| United Utilities | River Calder | CALDER BRIDGE WWTW | 52 | 835 | 99.7 |
| United Utilities | River Calder | HYNDBURN WWTW HYNBD | 53 | 524 | 100 |
| United Utilities | River Calder | BURNLEY STW | 38 | 434 | 99.1 |
| United Utilities | River Calder | RIDDING LANE CSO (342X5) | 50 | 372 | 79.1 |
| United Utilities | River Calder | CROW WOOD CSO 08070 | 78 | 269 | 99.2 |
| United Utilities | River Calder | OPP 76 BURNLEY ROAD CSO | 93 | 169 | 99.5 |
| United Utilities | River Calder | ALTHAM OUTFALL (FENNYFOLD) CSO | 49 | 157 | 100 |
| United Utilities | River Calder | CALDER VALE PUMPING STATION | 31 | 121 | 99.5 |
| United Utilities | River Calder | LONGWORTH RD/R'WAY VIADUCT | 41 | 104 | 99.3 |
| United Utilities | River Calder | INSKIP STREET (082AK) CSO | 59 | 96 | 99 |
| United Utilities | River Calder | HONEY HOLME LANE CSO | 20 | 54 | 98.7 |
| United Utilities | River Calder | STATION ROAD (PALIHAM) CSO | 53 | 43 | 99.4 |
| United Utilities | River Calder | ADJACENT TO PADIHAM LEISURE CENTRE | 25 | 40 | 98.9 |
| United Utilities | River Calder | SIMONSTONE LANE CSO | 4 | 16 | 97.2 |
| United Utilities | River Calder | BROOKLANDS ROAD/TODMORDEN ROAD CSO | 6 | 9 | 99.7 |
| United Utilities | River Calder | LIVERPOOL ROAD CSO (088NF) | 0 | 0 | 99.2 |
| United Utilities | River Calder | PARK ROAD COMBINED SEWER OVERFLOW | 0 | 0 | 99.8 |
| United Utilities | River Calder | SHUTTLEWORTH STCALDER ST CSO | 0 | 0 | 99.8 |
| United Utilities | River Calder | WATERBARN STREET/BARDEN LANE CSO | 0 | 0 | 98.3 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org