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Here are all the reported sewage overflow totals for Coastal Waters 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 | Coastal Waters | Llaneilian SPS | 54 | 688 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | PENSARN SPS ABERGELE STORM | 71 | 606 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | RHOSNEIGR STW (SETTLED STORM/EMERGE | 39 | 587 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | FAIRBOURNE WWTW STORM TANKS | 28 | 554 | 99.7 |
| Dwr Cymru Welsh Water | Coastal Waters | CRICCIETH EAST PS , , | 56 | 399 | 96.4 |
| Dwr Cymru Welsh Water | Coastal Waters | Llwyngwril SPS | 32 | 202 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | COVENTRY CAMP SPS STORM | 18 | 100 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | MOELFRE PS MOELFRE | 20 | 69 | 99.9 |
| Dwr Cymru Welsh Water | Coastal Waters | ROCK STREET PS NEW QUAY | 6 | 15 | 99.8 |
| Dwr Cymru Welsh Water | Coastal Waters | PENMAENMAWR PROMENADE PS | 7 | 14 | 96.6 |
| Dwr Cymru Welsh Water | Coastal Waters | WENDON CAR PARK PS BENLLECH , , , | 3 | 6 | 85.8 |
| Dwr Cymru Welsh Water | Coastal Waters | TENBY LIFEBOAT CSO CASTLE SQ TENBY | 2 | 2 | 99.8 |
| Dwr Cymru Welsh Water | Coastal Waters | CYNLAI PS LLANGOED ANGLESEY | 1 | 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