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Here are all the reported sewage overflow totals for Rhondda Fawr 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 | Rhondda Fawr | Station Rd CSO, Dinas, Porth | 120 | 919 | 95.8 |
| Dwr Cymru Welsh Water | Rhondda Fawr | Ton Pentre PS CSOTont Pentre RCT | 128 | 779 | 99.6 |
| Dwr Cymru Welsh Water | Rhondda Fawr | CSO O/S Welcome Inn, Tylacelyn Rd, Penygraig | 82 | 215 | 99 |
| Dwr Cymru Welsh Water | Rhondda Fawr | Gelligaled Pk CSO Ystrad Rhondda | 62 | 184 | 99.1 |
| Dwr Cymru Welsh Water | Rhondda Fawr | REES STREET PUMPING STATION GELLI | 39 | 44 | 99.9 |
| Dwr Cymru Welsh Water | Rhondda Fawr | CSO to rear of 8 Griffin Park | 13 | 40 | 62 |
| Dwr Cymru Welsh Water | Rhondda Fawr | CSO at Penycraig - Tylacelyn Road | 42 | 27 | 99.2 |
| Dwr Cymru Welsh Water | Rhondda Fawr | Treherbert Bute/Corbett/David St Junction CSO | 5 | 15 | 99.8 |
| Dwr Cymru Welsh Water | Rhondda Fawr | CSO OFF YNYSCYNON ROAD TREALAW | 16 | 15 | 99.4 |
| Dwr Cymru Welsh Water | Rhondda Fawr | ELISABETH CLOSE CSO PENTRE RCT | 2 | 1 | 99.9 |
| Dwr Cymru Welsh Water | Rhondda Fawr | CSO at 136 Tyntyla Road, Tonypandy | 3 | 0 | 99.8 |
| Dwr Cymru Welsh Water | Rhondda Fawr | Treherbert Pumping Station, Park Close | 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.
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