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Here are all the reported sewage overflow totals for River Mersey in 2025. Sometimes sewage can be being dumped for months at a time.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | River Mersey | BURTON ROAD WITHINGTON CSO 28056 | 75 | 1,716 | 80.4 |
| United Utilities | River Mersey | STOCKPORT WWTW | 100 | 632 | 100 |
| United Utilities | River Mersey | BARLOW MOOR ROAD | 79 | 516 | 97.2 |
| United Utilities | River Mersey | STRETFORD WWTW | 31 | 382 | 100 |
| United Utilities | River Mersey | DESOTO ROAD CSO (201RQ) | 57 | 346 | 99.6 |
| United Utilities | River Mersey | WITHINGTON PUMPING STATION 28009 | 67 | 329 | 100 |
| United Utilities | River Mersey | 650YDS DS KINGWAY RVR BRIDGE CSO | 48 | 219 | 99.8 |
| United Utilities | River Mersey | CARRINGTON RD | 53 | 210 | 100 |
| United Utilities | River Mersey | HOPE STREET COMBINED SEWER OVERFLOW | 84 | 184 | 99.3 |
| United Utilities | River Mersey | WALWYN CLOSE CSO 45049 | 55 | 140 | 99 |
| United Utilities | River Mersey | BRADLEY LANE (SRETFORD) CSO | 34 | 136 | 86.7 |
| United Utilities | River Mersey | KINGSWAY COMBINED SEWER OVERFLOW | 70 | 133 | 99.8 |
| United Utilities | River Mersey | WELLINGTON ROAD SOUTH CSO | 50 | 115 | 66.8 |
| United Utilities | River Mersey | PRINCES STREET CSO | 54 | 113 | 99.6 |
| United Utilities | River Mersey | THE CIRCUIT CSO 432UT | 56 | 101 | 99.9 |
| United Utilities | River Mersey | PRINCES PRKWAY/M60 CSO 28051 | 20 | 100 | 99.4 |
| United Utilities | River Mersey | TRAVIS BROW/GEORGES ROAD CSO | 56 | 86 | 99.8 |
| United Utilities | River Mersey | PADDINGTON PS 48028 | 29 | 64 | 96 |
| United Utilities | River Mersey | SLEDMOOR ROAD CSO | 34 | 59 | 99.9 |
| United Utilities | River Mersey | THEWLIS STREET CSO | 37 | 58 | 68.5 |
| United Utilities | River Mersey | LIME TREE CLOSE CSO | 11 | 46 | 99.1 |
| United Utilities | River Mersey | DANEFIELD ROAD CSO 45052 | 16 | 40 | 100 |
| United Utilities | River Mersey | HEATON MOOR CSO 431YX | 17 | 24 | 97.1 |
| United Utilities | River Mersey | KENWORTHY LANE PS | 9 | 24 | 93.5 |
| United Utilities | River Mersey | WHARF STREET CSO | 2 | 23 | 79.6 |
| United Utilities | River Mersey | BRIGHTON ROAD CSO | 28 | 21 | 97 |
| United Utilities | River Mersey | FLIXTON ROAD CSO | 9 | 17 | 98.4 |
| United Utilities | River Mersey | BRINKSWAY BRIDGE/GVILLE STREET CSO | 2 | 13 | 99.5 |
| United Utilities | River Mersey | CARRINGTON LANE | 11 | 11 | 99.6 |
| United Utilities | River Mersey | WESTY FLUMES 1 SOUTH CSO 489CB | 8 | 10 | 100 |
| United Utilities | River Mersey | CHESTERGATE CSO 431A3 | 6 | 9 | 99.8 |
| United Utilities | River Mersey | 95/97 CRAIG ROAD HEATON MERSEY CSO | 5 | 6 | 99.9 |
| United Utilities | River Mersey | TRENTHAM P.S | 18 | 4 | 100 |
| United Utilities | River Mersey | CHESTERGATE/KING STREET WEST CSO | 5 | 2 | 98 |
| United Utilities | River Mersey | DARESBURY COMBINED SEWER OVERFLOW | 6 | 1 | 96.9 |
| United Utilities | River Mersey | BARLOW MOOR RD/PALATINE RD CSO | 1 | 1 | 58.5 |
| United Utilities | River Mersey | BANKHALL CSO 99007 LIV0038 | 6 | 1 | 100 |
| United Utilities | River Mersey | STRAND ROAD STORM SEWER OVERFLOW | 2 | 1 | 100 |
| United Utilities | River Mersey | 103 BRINKSWAY/LARK HILL | 5 | 0 | 99.7 |
| United Utilities | River Mersey | MAYFIELDS DRIVE WW NTWK PS | 0 | 0 | 85.5 |
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