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Polluted by sewage 555 times in 2025 lasting 2,963 hours
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Donate NowHere are all the reported sewage overflow totals for Falmouth 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 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 % |
|---|---|---|---|---|---|
| South West Water | Penryn River | COMMERCIAL ROAD PUMPING STATION | 75 | 857 | 100 |
| South West Water | Falmouth Bay/ Bickland Wat | SWANVALE PUMPING STATION | 42 | 690 | 100 |
| South West Water | Penryn River | FALMOUTH STW INLET & STORM PS | 39 | 582 | 100 |
| South West Water | Penryn River | CSO IN HIGH STREET | 101 | 352 | 100 |
| South West Water | Penryn River | CSO AT NORTH PARADE | 97 | 212 | 100 |
| South West Water | Penryn River | CSO AT DUNSTANVILLE TERRACE | 47 | 85 | 100 |
| South West Water | Penryn River | CSO OFF PENDARVES ROAD | 32 | 49 | 100 |
| South West Water | Penryn River | CSO AT KILLIGREW STREET | 37 | 41 | 100 |
| South West Water | Penryn River | ST THOMAS STREET CSO | 23 | 25 | 100 |
| South West Water | Penryn River | FLUSHING PUMPING STATION | 12 | 23 | 100 |
| South West Water | Falmouth Bay | QUEEN MARY GARDENS PUMPING STATION | 26 | 19 | 100 |
| South West Water | Penryn River | GROVE PLACE NO.1 CSO | 10 | 12 | 100 |
| South West Water | Penryn River | OLD HILL PS | 10 | 12 | 100 |
| South West Water | Penryn River | TEHIDY TERRACE CSO | 3 | 0 | 92.3 |
| South West Water | Swanpool | SWANPOOL PSCSO/EO | 1 | 0 | 98.9 |
| South West Water | Penryn River | CSO AT MARKET STREET | 0 | 0 | 100 |
| South West Water | Penryn River | OLD HILL (TRESAWLE RD) CSO | 0 | 0 | 100 |
| South West Water | Maenporth Stream | PENNANCE MILL TIDAL TANKS CSO | 0 | 0 | 100 |
| South West Water | Penryn River | PRINCE OF WALES PUMPING STATION | 0 | 0 | 100 |
| South West Water | Penryn River | WEBBER STREET CSO | 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