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Polluted by sewage 911 times in 2025 lasting 4,072 hours
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Donate NowHere are all the reported sewage overflow totals for Chester South and Eddisbury 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 % |
|---|---|---|---|---|---|
| United Utilities | River Weaver | CREWE WWTW | 63 | 664 | 100 |
| Dwr Cymru Welsh Water | Golbourne Brook | CSO AT TATTENHALL STW | 66 | 336 | 99.9 |
| Dwr Cymru Welsh Water | Aldford Brook | ALDFORD SEWAGE TREATMENT WORKS | 54 | 330 | 99.8 |
| United Utilities | Crowton Brook | KINGSLEY STW | 30 | 280 | 100 |
| United Utilities | Wettenhall Brook | TARPORLEY WWTW | 63 | 246 | 99.95 |
| Dwr Cymru Welsh Water | Powsey Brook | SAIGHTON SEWAGE TREATMENT WORKS | 53 | 182 | 99.9 |
| United Utilities | Fir Brook | OAKMERE PUMPING STATION | 23 | 181 | 100 |
| United Utilities | Edelston Brook | BADDILEY LANE SPS | 31 | 178 | 98 |
| United Utilities | Wettenhall Brook | RUSHTON WASTEWATER TREATMENT WORKS | 8 | 160 | 99.8 |
| Dwr Cymru Welsh Water | Unnamed Watercourse | MALPAS SUNNYSIDE PS | 16 | 155 | 99.9 |
| United Utilities | Milton Brook | TARVIN STW | 34 | 141 | 99.8 |
| United Utilities | River Weaver | BULKELEY STW | 18 | 139 | 90 |
| United Utilities | Crowton Brook | OFF RODDY LANE CSO (472O5) | 45 | 119 | 97.8 |
| United Utilities | River Gowy | BUNBURY STW | 46 | 95 | 99.9 |
| United Utilities | Cuddington | CUDDINGTON PUMPING STATION | 15 | 94 | 99.9 |
| United Utilities | Sandyford Brook | COTEBROOK STW | 18 | 82 | 100 |
| Dwr Cymru Welsh Water | River Dee | THE DINGLE CHESTER CSO | 66 | 82 | 98.5 |
| Dwr Cymru Welsh Water | River Dee | CHESTER WEIR (SOUTH BANK) CSO | 20 | 73 | 95.9 |
| United Utilities | Swanback Mill Brook | VICARAGE ROAD CSO | 23 | 61 | 99.7 |
| Dwr Cymru Welsh Water | Caldy Brook | THE RAKE AND PIKLE PUMPING STATION | 4 | 60 | 99.9 |
| United Utilities | Caldy Brook River Dee | APPLEGARTH | 5 | 54 | 93.2 |
| United Utilities | Sales Brook | WHITCHURCH ROAD SPS | 14 | 44 | 99.6 |
| United Utilities | River Weaver | WEAVERHAM STW | 32 | 43 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | GROSVENOR BRIDGE CSO | 13 | 38 | 99.8 |
| Dwr Cymru Welsh Water | Dee | ECCLESTON PUMPING STATION | 4 | 37 | 99.9 |
| Dwr Cymru Welsh Water | Bache Brook | CHESTER TROOPER INN CSO | 14 | 36 | 98.9 |
| United Utilities | River Weaver | WRENBURY WASTEWATER TREATMENT WORKS | 12 | 28 | 99.8 |
| Dwr Cymru Welsh Water | Carden Brook | CSO TILSTON SEWAGE TREATMENT WORKS | 14 | 21 | 99.9 |
| Dwr Cymru Welsh Water | Caldy Brook | CHRISTLETON WHITCHURCH ROAD PS | 10 | 18 | 99.9 |
| United Utilities | Cuddington Brook | CUDDINGTON LANE CSO (471QL) | 14 | 16 | 99.9 |
| United Utilities | Shropshire Union Canal | WRENBURY HALL ROAD SPS | 9 | 16 | 73.4 |
| Dwr Cymru Welsh Water | Wych Brook | MALPAS SEWAGE TREATMENT WORKS | 16 | 12 | 99.8 |
| United Utilities | River Weaver | OWLEY WOOD ROAD CSO | 15 | 11 | 97.8 |
| Dwr Cymru Welsh Water | River Dee | SALTNEY SEWERAGE CHESTER STREET PS | 6 | 6 | 99.8 |
| United Utilities | River Weaver | KEEPER'S LANE CSO (472BH) | 10 | 6 | 96.5 |
| United Utilities | Cuddington Brook | CUDDINGTON LANE CSO (471QL) | 4 | 5 | 99.3 |
| Dwr Cymru Welsh Water | River Dee | EDGAR PARK CSO | 10 | 4 | 99.1 |
| United Utilities | Cuddington Brook | WASTE LANE CSO SITE ID 472W0 | 4 | 1 | 99.2 |
| Dwr Cymru Welsh Water | Unnambed River | WELL STREET COMBINED SEWER OVERFLOW | 2 | 0 | 99.7 |
| United Utilities | River Weaver | BROOMHALL SPS | 1 | 0 | 81.1 |
| Dwr Cymru Welsh Water | Ditch | PLOUGH LANE EAST PUMPING STATION | 2 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Of Balderton Brook | MARLSTON CUM LACHE PS SSO | 1 | 0 | 89.7 |
| Dwr Cymru Welsh Water | River Dee | REAR OF 22 CURZON PARK NORTH CSO | 1 | 0 | 99.7 |
| Dwr Cymru Welsh Water | River Dee | SANDY LANE COMBINED SEWER OVERFLOW | 1 | 0 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | THE DINGLE COMBINED SEWER OVERFLOW | 1 | 0 | 99 |
| Dwr Cymru Welsh Water | River Dee | CHESTER BELGRAVE PARK SPS | 0 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Caldy Brook | CHRISTLETON OLD WOMAN'S LANE CSO | 0 | 0 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | HANDBRIDGE GREENBANK SPS | 0 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Balderton Brook | MARLSTON-CUM-LACHE PUMPING STATION | 0 | 0 | 99.9 |
| Dwr Cymru Welsh Water | Millbrook | MILLBROOK PARK 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. 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