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Polluted by sewage 1,188 times in 2024 lasting 6,849 hours
Monitoring was disabled in some locations, so could be more
So far this year (as of May 9, 2025, 11:00 AM) there has been 205 hours of sewage overflows
Your local MP is Samantha Dixon (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 Chester North and Neston, 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 Chester North and Neston 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 2 of the total 29 CSO locations had reporting enabled for less than half the year. Of these 1 had zero reporting.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | Dee Estuary | NESTON PARKGATE PUMPING STATION | 145 | 1,576 | 99.9 |
| Dwr Cymru Welsh Water | Stanney Brook | NESTON WASTEWATER TREATMENT WORKS | 125 | 1,367 | 99.9 |
| United Utilities | Dibbinsdale Brook | HOOTON ROAD CSO 181ZR | 82 | 844 | 99.2 |
| Dwr Cymru Welsh Water | River Dee | DEE LANE CSO | 101 | 446 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | CHESTER WASTEWATER TREATMENT WORKS | 65 | 446 | 99.9 |
| Dwr Cymru Welsh Water | Dee Estuary | GREENFIELDS DRIVE CSO | 34 | 329 | 99.9 |
| Dwr Cymru Welsh Water | River Dee Estuary | MARSHLANDS ROAD PS | 24 | 308 | 20.5 |
| Dwr Cymru Welsh Water | River Dee | LITTLE ROODEE CSO | 60 | 199 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | CSO AT CHESTER STW | 62 | 155 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | DEVA TERRACE CSO | 87 | 155 | 97.8 |
| Dwr Cymru Welsh Water | Dee Estuary | HARP INN CSO | 55 | 137 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | THE GROVES CSO | 50 | 134 | 99.9 |
| Dwr Cymru Welsh Water | Highfield Drain | PARKGATE ROAD PS CHESTER , | 49 | 132 | 99.9 |
| Dwr Cymru Welsh Water | Stanney Brook | TANKFIELDS CSO | 49 | 129 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | CRANE STREET CSO | 53 | 121 | 97.7 |
| Dwr Cymru Welsh Water | River Dee | SAUGHALL VILLAGE CSO | 31 | 116 | 93 |
| Dwr Cymru Welsh Water | Garden City Drain | SAUGHALL SEAHILL ROAD PS CSO | 15 | 62 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | BOATHOUSE INN CSO | 32 | 55 | 99.9 |
| Dwr Cymru Welsh Water | Bache Brook | WEST OF WEALSTONE LANE CSO | 21 | 45 | 98.6 |
| Dwr Cymru Welsh Water | Dee Estuary | 5 DEE COTTAGES CSO | 16 | 26 | 75.7 |
| Dwr Cymru Welsh Water | Unnamed Watercourse | GLADSTONE ROAD CSO | 17 | 25 | 99.9 |
| Dwr Cymru Welsh Water | Clatter Brook | CSO AT WILLASTON MILL SPS | 7 | 17 | 99.9 |
| Dwr Cymru Welsh Water | Finchett'S Gutter | MOSTON ROAD CSO | 3 | 9 | 99.4 |
| Dwr Cymru Welsh Water | Bache Brook | BACHE TANKS CSO | 1 | 5 | 99.9 |
| United Utilities | Dibbinsdale Brook | WILLASTON RELIEF SEWER | 2 | 1 | 77.9 |
| Dwr Cymru Welsh Water | Bache Brook | CHESTER PARKGATE COURT SPS | 2 | 0 | 99.5 |
| Dwr Cymru Welsh Water | Dee Esturary | EARLE DRIVE - PARKGATE ROAD CSO | 0 | 0 | 0 |
| Dwr Cymru Welsh Water | River Dee | OLD DEE BRIDGE (NORTH BANK) CSO | 0 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Finchett'S Gutter | DALESIDE COMBINED SEWER OVERFLOW | 0 | 0 | 98.7 |
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. 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