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Polluted by sewage 317 times in 2025 lasting 1,252 hours
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Donate NowHere are all the reported sewage overflow totals for Oldham in 2025. 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 place all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Irk | ROYTON SETTLED STORM OVERFLOW | 34 | 329 | 92.3 |
| United Utilities | River Medlock | 250M OF ASHTON ROAD BARDSLEY PS CSO | 30 | 305 | 100 |
| United Utilities | Moston Brook | ALFORD STREET PUMPING STATION | 28 | 218 | 100 |
| United Utilities | Glodwick Brook | SNIPE CLOUGH CSO | 20 | 93 | 99.8 |
| United Utilities | Plumpton Clough | SHEEPFOOT LANE CSO | 55 | 69 | 99.3 |
| United Utilities | Clvrt'D Section Hodge Clough | 674 RIPPONDEN ROAD CSO | 23 | 62 | 100 |
| United Utilities | River Medlock Via Sws | COAL PIT LANE CSO | 15 | 42 | 100 |
| United Utilities | Stock Brook Via Sws | ARKWRIGHT STREET CSO | 41 | 41 | 99.8 |
| United Utilities | Bower Brook Via Sws | SUFFOLK ST COMBINED SEWER OVERFLOW | 26 | 27 | 100 |
| United Utilities | Luzley Brrok | HOLDEN FOLD LANE CSO | 10 | 12 | 99.7 |
| United Utilities | Lords Brook | HOLLINWOOD CEMETERY CSO | 5 | 12 | 98.6 |
| United Utilities | River Beal Via Sws | STONELEIGH PARK CSO | 11 | 10 | 100 |
| United Utilities | River Medlock | HATHERSHAW CSO | 3 | 9 | 94.3 |
| United Utilities | Stock Brook Culvert Via Sws | HUNT LANE COMBINED SEWER OVERFLOW | 3 | 6 | 99.9 |
| United Utilities | Plumpton Clough | WESTHULME HOSPITAL CSO | 3 | 5 | 100 |
| United Utilities | Lords Brook | LIMESIDE RD/CHURCH CSO | 3 | 3 | 99.8 |
| United Utilities | Plumpton Clough | BOUNDARY PARK ROAD CSO | 3 | 1 | 100 |
| United Utilities | Culvert Glodwick Brook | ABBEYHILLS COMBINED SEWER OVERFLOW | 2 | 1 | 100 |
| United Utilities | Moston Brook Via Sws | LIMESIDE ROAD/FOX MILL CSO | 2 | 0 | 100 |
| United Utilities | Lords Brook | HOLT LANE FAILSWORTH SSO | 0 | 0 | 100 |
| United Utilities | River Medlock | ABBEYHILLS COMBINED SEWER OVERFLOW | 0 | 0 | 99.7 |
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.
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Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org