Media Queries
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org
Please Support Us
We rely on donations to fund our work. Please support us if you can
Here are all the reported sewage overflow totals for River Llan in 2025. Sometimes sewage can be being dumped for months at a time.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | River Llan | Cuckoo Mill SPS | 48 | 774 | 98.1 |
| Dwr Cymru Welsh Water | River Llan | CWMBACH ROAD CSO COCKETT SWANSEA | 79 | 277 | 98.9 |
| Dwr Cymru Welsh Water | River Llan | CSO, Denver R’D Into Culvert Swansea | 89 | 150 | 99.9 |
| Dwr Cymru Welsh Water | River Llan | Blaenymaes Drive CSO | 44 | 97 | 99 |
| Dwr Cymru Welsh Water | River Llan | CAERNARFON - PENYGROES SSO NO. | 53 | 75 | 99.9 |
| Dwr Cymru Welsh Water | River Llan | CSO BRYNMOR RD SOC11 GOWERTON S124 | 39 | 47 | 99.7 |
| Dwr Cymru Welsh Water | River Llan | Skomer Place CSO, Blaen Y Maes | 24 | 27 | 99.8 |
| Dwr Cymru Welsh Water | River Llan | Station Road CSO, Pen Y Cwm Swansea | 32 | 18 | 98.5 |
| Dwr Cymru Welsh Water | River Llan | Cadleroad Road CSO | 21 | 12 | 99.6 |
| Dwr Cymru Welsh Water | River Llan | Mynydd Newydd Rd CSO | 9 | 7 | 100 |
| Dwr Cymru Welsh Water | River Llan | Camarthen Rd CSO | 3 | 1 | 99.8 |
| Dwr Cymru Welsh Water | River Llan | Kingsway CSO | 0 | 0 | 85 |
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.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org