Here are all the reported sewage overflow totals for River Gwyrfai in 2023. Sometimes sewage can be being dumped for months at a time.
These numbers are very slightly different from the Rivers page. We're working on it.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | River Gwyrfai | CSO at Waunfawr STW | 123 | 1,807 | 100 |
| Dwr Cymru Welsh Water | River Gwyrfai | Bontnewydd CSO | 119 | 426 | 97.3 |
| Dwr Cymru Welsh Water | River Gwyrfai | WAUNFAWR STW (FINAL EFFLUENT) | 20 | 350 | 100 |
| Dwr Cymru Welsh Water | River Gwyrfai | Llanfaglan WwTW Settled Storm Overflow | 30 | 301 | 99.2 |
| Dwr Cymru Welsh Water | River Gwyrfai | CSO at Bontnewydd Glanrafon No10 | 64 | 130 | 95.8 |
| Dwr Cymru Welsh Water | River Gwyrfai | Bontnewydd CSO Ysgol Gynradd Bontne | 2 | 1 | 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. 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.
