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Polluted by sewage 536 times in 2025 lasting 5,184 hours
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Donate NowHere are all the reported sewage overflow totals for Abercynon 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 % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | River Taff | CILFYNYDD STW CILFYNYDD PONTYPRID | 112 | 1,698 | 97.7 |
| Dwr Cymru Welsh Water | River Cynon | PONTCYNON PIPE BRIDGE CSO ABERCYNON | 103 | 1,165 | 99.2 |
| Dwr Cymru Welsh Water | River Taff | CYNON VALLEY STW GLYNCOCH PONTY | 64 | 778 | 99.9 |
| Dwr Cymru Welsh Water | River Taff | Abercynon Wood Rd SPS | 66 | 703 | 99.9 |
| Dwr Cymru Welsh Water | River Taff | Cilfynydd STW Cilfynydd Pontypridd Settled Storm | 20 | 329 | 99.8 |
| Dwr Cymru Welsh Water | River Taff | Quakers Yard CSO, Greenfield Victoria Bridge | 32 | 160 | 86.5 |
| Dwr Cymru Welsh Water | River Taff | Quakers Yard CSO, Fiddlers Elbow St, Cynon | 32 | 157 | 99.5 |
| Dwr Cymru Welsh Water | River Cynon | Glassbrook Terrace CSO, Penrhiwceiber | 48 | 124 | 99.2 |
| Dwr Cymru Welsh Water | R Cynon - Conf Aman R To Conf R Taff | Station Terrace CSO, Penrhiwceiber | 30 | 38 | 80.1 |
| Dwr Cymru Welsh Water | River Cynon | Penrhiwceiber Point D CSO | 29 | 30 | 99.7 |
| Dwr Cymru Welsh Water | River Cynon | Abercynon Rugby Club CSO | 0 | 0 | 99.3 |
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