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Polluted by sewage 850 times in 2024 lasting 4,857 hours
So far this year (as of May 9, 2025, 3:00 AM) there has been 1,032 hours of sewage overflows
Your local MP is Mike Amesbury (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 Runcorn and Helsby, 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 Runcorn and Helsby 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 all the declared CSOs appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| United Utilities | Stanney Mill Brook | MICKLE TRAFFORD PUMPING STATION | 167 | 1,853 | 99.9 |
| United Utilities | Thornton Brook/River Gowy | ELLESMERE PORT WWTW | 91 | 885 | 99.9 |
| United Utilities | M/C Ship Canal | RUNCORN WASTEWATER TREATMENT WORKS | 63 | 719 | 100 |
| United Utilities | Manchester Ship Canal | TOWN PUMPING STATION | 62 | 455 | 99.9 |
| United Utilities | River Weaver | NEWTOWN PUMPING STATION | 47 | 272 | 100 |
| United Utilities | Hornsmill Brook | HELSBY WWTW | 34 | 216 | 99.1 |
| United Utilities | Manchester Ship Canal | PENN LANE WESTON POINT PR CSO 202LE | 65 | 113 | 99.1 |
| United Utilities | Manchester Ship Canal | HALTON BROW CSO 203EF | 79 | 105 | 98.4 |
| United Utilities | Manchester Ship Canal | HARDWICK ROADCSO | 24 | 73 | 99.1 |
| United Utilities | West Central Drain, Mersey Est | ELTON PS | 16 | 47 | 100 |
| United Utilities | River Weaver | WATERSIDE DRIVE CSO 472H4 | 27 | 46 | 98.9 |
| United Utilities | Main Drain | HIGH STREET/MOORS LANE CSO | 29 | 21 | 99 |
| United Utilities | Manchester Ship Canal | RUNCORN ROAD CSO | 16 | 11 | 99.2 |
| United Utilities | Frodsham Marsh Ditch | HATLEY LANE COMBINED SEWER OVERFLOW | 17 | 7 | 99 |
| United Utilities | Manchester Ship Canal | THE BROW CSO 202UP | 12 | 6 | 99 |
| United Utilities | River Mersey | TRENTHAM P.S | 46 | 5 | 100 |
| United Utilities | Willow Brook | RUNCORN TOWN HALL CSO | 3 | 3 | 99.3 |
| United Utilities | River Weaver | BRIDGE LANE QUAYSIDE CSO | 10 | 2 | 99.1 |
| United Utilities | Manchester Ship Canal | WATERLOO ROAD CSO (202ZW) | 9 | 1 | 96.2 |
| United Utilities | Hornsmill Brook | HAPSFORD SPS | 3 | 1 | 100 |
| United Utilities | Unknown | WINDSOR GROVE | 8 | 1 | 97.1 |
| United Utilities | River Mersey | DARESBURY COMBINED SEWER OVERFLOW | 8 | 1 | 80.1 |
| United Utilities | Bridgewater Canal Via Sws | DOWNS ROAD COMBINED SEWER OVERFLOW | 7 | 1 | 98.8 |
| United Utilities | Kingsley Brook | OFF WELL LANE KINGSLEY CSO (472JN) | 3 | 1 | 99.4 |
| United Utilities | Unknown | LABURNUM GROVE | 4 | 0 | 90.5 |
| United Utilities | Weaver Navigation | SOUTH PARADE CSO 202S2 | 0 | 0 | 93.7 |
| United Utilities | Manchester Ship Canal Via Sws | SALTWORKS PUMPING STATION | 0 | 0 | 99.9 |
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