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Polluted by sewage 279 times in 2025 lasting 452 hours
Monitoring fell below 50% in some locations so could be more
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Donate NowHere are all the reported sewage overflow totals for Weymouth 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 place 1 of the total 27 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Wessex Water | Unknown | WEYMOUTH SEWAGE TREATMENT WORKS | 65 | 302 | 100 |
| Wessex Water | Weymouth Harbour Via Sws | RODWELL AVENUE CSO | 44 | 33 | 98.3 |
| Wessex Water | River Wey | CHAFEY'S LAKE CSO | 14 | 32 | 96.1 |
| Wessex Water | Radipole Lake | ROMAN ROAD COMBINED SEWER OVERFLOW | 38 | 26 | 100 |
| Wessex Water | Weymouth Harbour | THE MARSH COMBINED SEWER OVERFLOW | 10 | 15 | 100 |
| Wessex Water | Weymouth Harbour | ADMIRAL HARDY CSO | 6 | 9 | 88.1 |
| Wessex Water | Weymouth Bay | CRANFORD AVENUE CSO | 17 | 4 | 95.9 |
| Wessex Water | Weymouth Harbour | CHICKERELL BOYS CLUB CSO | 20 | 4 | 95.3 |
| Wessex Water | River Wey | FAIRFIELD SEWAGE PUMPING STATION | 4 | 4 | 100 |
| Wessex Water | Weymouth Bay | MELCOMBE AVENUE CSO | 13 | 4 | 99.8 |
| Wessex Water | Portland Harbour | REAR DONCASTER ROAD | 11 | 3 | 99.9 |
| Wessex Water | Radipole Lake Via Sws | CORONATION CRESCENT CSO | 14 | 3 | 100 |
| Wessex Water | Radipole Lake Via Sws | ULLSWATER CRESCENT CSO | 8 | 1 | 100 |
| Wessex Water | Weymouth Harbour | CHICKERELL ROAD CSO | 6 | 1 | 34 |
| Wessex Water | Weymouth Harbour | WESTON ROAD CSO | 3 | 0 | 100 |
| Wessex Water | Portland Harbour | CASTLE COVE PUMPING STATION | 2 | 0 | 100 |
| Wessex Water | Portland Harbour | HILLCREST ROAD PUMPIMG STATION | 1 | 0 | 100 |
| Wessex Water | Weymouth Harbour | NEWSTEAD ROAD PUMPING STATION | 1 | 0 | 100 |
| Wessex Water | Weymouth Harbour | LONGCROFT ROAD CSO | 1 | 0 | 61.6 |
| Wessex Water | Weymouth Harbour | WARDCLIFFE ROAD CSO | 1 | 0 | 100 |
| Wessex Water | Fleet | FERRYBRIDGE PS | 0 | 0 | 100 |
| Wessex Water | Radipole Lake | GRASMERE ROAD CSO | 0 | 0 | 100 |
| Wessex Water | Weymouth Harbour Via Sws | MARLOW ROAD COMBINED SEWER OVERFLOW | 0 | 0 | 100 |
| Wessex Water | Weymouth Harbour | RADIPOLE LAKE PUMPING STATION | 0 | 0 | 100 |
| Wessex Water | Radipole Lake Via Sws | SPA ROAD COMBINED SEWER OVERFLOW | 0 | 0 | 100 |
| Wessex Water | Weymouth Harbour Via Sws | SPRING LANE CSO | 0 | 0 | 99.5 |
| Wessex Water | Weymouth Harbour | SPRING ROAD COMBINED SEWER OVERFLOW | 0 | 0 | 100 |
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