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Polluted by sewage 913 times in 2024 lasting 3,780 hours
Monitoring fell below 50% in some locations so could be more
So far this year (as of May 9, 2025, 5:15 AM) there has been 713 hours of sewage overflows
Your local MP is Jonathan Hinder (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Pendle and Clitheroe, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate NowHere are all the reported sewage overflow totals for Pendle and Clitheroe in 2024. 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 1 of the total 32 CSO locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Yorkshire Water | Earby Beck | EARBY WWTW | 178 | 718 | 100 |
| United Utilities | Chatburn Brook | CHATBURN PUMPING STATION | 75 | 646 | 100 |
| United Utilities | Colne Water | COLNE WASTE WATER TREATMENT WORKS | 78 | 519 | 100 |
| United Utilities | Pendleton Brook | NORTH WEST OF HENTHORN ROAD BRIDGE | 56 | 379 | 98.9 |
| United Utilities | Butts Beck | NEAR BUTTS BECK CSO (321H7) | 15 | 239 | 99.3 |
| United Utilities | Stock Beck | BARNOLDSWICK WWTW | 29 | 233 | 100 |
| United Utilities | Pendleton Brook | CLITHEROE STREET CSO | 65 | 217 | 93.4 |
| Yorkshire Water | County Dyke | FOULRIDGE CSO | 75 | 176 | 100 |
| United Utilities | River Calder | LONGWORTH RD/R'WAY VIADUCT | 36 | 121 | 80.7 |
| United Utilities | Walverden Water | NETHERFIELD ROAD CSO (32019) | 58 | 113 | 100 |
| United Utilities | Swinden Clough | 273 REGENT ST CSO (32013) | 25 | 105 | 13.3 |
| United Utilities | Pendle Water | LOMESHAYE WAY CSO | 28 | 75 | 99.9 |
| United Utilities | Colne Water | COLNE REFUSE TRANSFER STATION | 28 | 69 | 99.2 |
| United Utilities | Walverden Water | FLEET STREET | 17 | 42 | 100 |
| United Utilities | Walverden Wtr Pendle Wtr | CHAPEL HOUSE ROAD (32014) CSO | 16 | 36 | 100 |
| United Utilities | River Calder | SIMONSTONE LANE CSO | 10 | 16 | 99.3 |
| United Utilities | Walverden Water | WALVERDEN PARK CSO | 10 | 11 | 100 |
| United Utilities | Hendon Brook | HEY STREET (PLAYGROUND) CSO (32017) | 5 | 9 | 100 |
| United Utilities | Walverden Water | CHAPEL HOUSE ROAD CSO (32014) | 17 | 8 | 99.4 |
| United Utilities | Pendle Water | BARROWFORD CSO | 41 | 7 | 100 |
| United Utilities | Culvrtd Walverden Wtr | REEDYFORD RD CSO (32020) | 7 | 5 | 100 |
| United Utilities | Colne Water | LANESHAWBRIDGE SCHOOL LANE CSO | 8 | 5 | 99.1 |
| United Utilities | Pendle Water | 11 NORTH PARK AVENUE CSO | 3 | 5 | 99.9 |
| United Utilities | Unknown | SABDEN CSO (342P9) | 4 | 4 | 99.4 |
| United Utilities | Walverden Water | CRAWFORD STREET (NELSON) CSO 321P3 | 7 | 4 | 99.3 |
| United Utilities | Butts Beck | DAM HEAD BRIDGE /GISBURN ROAD CSO | 8 | 3 | 99.6 |
| United Utilities | Calf Hall Beck | CALF HALL ROAD CSO | 5 | 1 | 93.2 |
| United Utilities | Pendleton Brook By Sws | ADJ POLICE STATION KING STREET CSO | 2 | 1 | 97.5 |
| United Utilities | Walverden Water | BRADLEY ROAD CSO (328N5) | 2 | 0 | 99.5 |
| United Utilities | Butts Beck | CORNMILL COTTAGES CSO | 2 | 0 | 99.2 |
| United Utilities | Swinden Clough | OXFORD RD/HOLLINS ROAD CSO | 2 | 0 | 99.3 |
| United Utilities | Swinden Clough | EDWARD STREET CSO | 1 | 0 | 98.6 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org