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Polluted by sewage 693 times in 2025 lasting 3,139 hours
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Donate NowHere are all the reported sewage overflow totals for Chester North and Neston 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 constituency 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 % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | Dee Estuary | NESTON PARKGATE PUMPING STATION | 85 | 643 | 99.9 |
| Dwr Cymru Welsh Water | Stanney Brook | NESTON WASTEWATER TREATMENT WORKS | 63 | 522 | 99.3 |
| Dwr Cymru Welsh Water | River Dee Estuary | MARSHLANDS ROAD PS | 61 | 409 | 99.6 |
| United Utilities | Dibbinsdale Brook | HOOTON ROAD CSO 181ZR | 37 | 258 | 99.8 |
| Dwr Cymru Welsh Water | River Dee | DEE LANE CSO | 58 | 233 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | CHESTER WASTEWATER TREATMENT WORKS | 26 | 149 | 99.9 |
| Dwr Cymru Welsh Water | Highfield Drain | PARKGATE ROAD PS CHESTER , | 23 | 119 | 99.9 |
| Dwr Cymru Welsh Water | Clatter Brook | CSO AT WILLASTON MILL SPS | 34 | 111 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | LITTLE ROODEE CSO | 36 | 109 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | THE GROVES CSO | 34 | 80 | 99.8 |
| Dwr Cymru Welsh Water | River Dee | DEVA TERRACE CSO | 44 | 78 | 96.6 |
| Dwr Cymru Welsh Water | Stanney Brook | TANKFIELDS CSO | 23 | 73 | 99.9 |
| Dwr Cymru Welsh Water | Dee Estuary | HARP INN CSO | 28 | 73 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | CSO AT CHESTER STW | 28 | 56 | 99.9 |
| Dwr Cymru Welsh Water | Bache Brook | WEST OF WEALSTONE LANE CSO | 27 | 51 | 94.7 |
| Dwr Cymru Welsh Water | River Dee | SAUGHALL VILLAGE CSO | 9 | 41 | 89.5 |
| Dwr Cymru Welsh Water | River Dee | CRANE STREET CSO | 20 | 34 | 96 |
| Dwr Cymru Welsh Water | River Dee | BOATHOUSE INN CSO | 23 | 28 | 99.9 |
| Dwr Cymru Welsh Water | Garden City Drain | SAUGHALL SEAHILL ROAD PS CSO | 11 | 22 | 99.9 |
| Dwr Cymru Welsh Water | Unnamed Watercourse | GLADSTONE ROAD CSO | 8 | 22 | 99.9 |
| Dwr Cymru Welsh Water | Dee Estuary | 5 DEE COTTAGES CSO | 6 | 17 | 99.7 |
| Dwr Cymru Welsh Water | Bache Brook | CHESTER PARKGATE COURT SPS | 3 | 0 | 95.8 |
| Dwr Cymru Welsh Water | Dee Esturary | EARLE DRIVE - PARKGATE ROAD CSO | 2 | 0 | 95.5 |
| Dwr Cymru Welsh Water | Dee Estuary | GREENFIELDS DRIVE CSO | 1 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Finchett'S Gutter | MOSTON ROAD CSO | 1 | 0 | 99.9 |
| United Utilities | Dibbinsdale Brook | WILLASTON RELIEF SEWER | 1 | 0 | 85.1 |
| Dwr Cymru Welsh Water | Finchett'S Gutter | DALESIDE COMBINED SEWER OVERFLOW | 1 | 0 | 99.6 |
| Dwr Cymru Welsh Water | Bache Brook | BACHE TANKS CSO | 0 | 0 | 99.8 |
| Dwr Cymru Welsh Water | River Dee | OLD DEE BRIDGE (NORTH BANK) CSO | 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. 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