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Polluted by sewage 284 times in 2024 lasting 475 hours
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Donate NowHere are all the reported sewage overflow totals for Treffynnon in 2024. 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 locality all the declared CSOs appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | Holywell Stream | GREENFIELD PARENT CSO HOLYWELL | 90 | 161 | 86.5 |
| Dwr Cymru Welsh Water | Greenfield Valley | CSO Adjacent A548 Road Bridge | 46 | 102 | 99.9 |
| Dwr Cymru Welsh Water | River Dee | PEN Y MAES PUMPING STATION | 36 | 96 | 99.9 |
| Dwr Cymru Welsh Water | Unnamed W/C | HOLYWELL PEN Y MAES RD/PEN Y M | 102 | 84 | 65.5 |
| Dwr Cymru Welsh Water | River Dee | GREENFIELD IND EST NO 1 HOLYWELL | 7 | 29 | 70.1 |
| Dwr Cymru Welsh Water | Unnamed W/C | GREENFIELD A548 NR ABBEY MILL | 3 | 1 | 99.2 |
| Dwr Cymru Welsh Water | Unnamed W/C | HOLYWELL STRAND WALK NR STRAND | 0 | 0 | 98.9 |
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.
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Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org