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
Polluted by sewage 3,205 hours in 2025
Your local MP is Chris Elmore (Labour) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Bridgend, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
We managed to raise ยฃ150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.
Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Dwr Cymru Welsh Water | Penybont WwTW Storm Overflow | Ogmore Estuary | 79 | 1,347 h 2m | 56.12 |
| Dwr Cymru Welsh Water | Bedford Road Storm Overflow | Nant Iorwerth Goch | 88 | 639 h 48m | 26.62 |
| Dwr Cymru Welsh Water | Laleston Storm Overflow | Unnamed Watercourse | 46 | 388 h 35m | 16.17 |
| Dwr Cymru Welsh Water | Coychurch Road Storm Overflow | Nant Heol Geifr | 26 | 174 h 36m | 7.25 |
| Dwr Cymru Welsh Water | Riverside Aberkenfig Storm Overflow | Ogwr Fawr River | 47 | 151 h 13m | 6.29 |
| Dwr Cymru Welsh Water | Hendre Road Pencoed Storm Overflow | Nant Heol-Y-Geifr | 36 | 124 h 4m | 5.17 |
| Dwr Cymru Welsh Water | Aberkenfig Railway Storm Overflow | River Llynfi | 20 | 72 h 18m | 3 |
| Dwr Cymru Welsh Water | Redlands Close Pencoed Storm Overflow | Nant Heol y Geifr | 37 | 64 h 15m | 2.67 |
| Dwr Cymru Welsh Water | Ty-Isaf Road Storm Overflow | Tributary of Nant Ffornwg | 14 | 51 h 54m | 2.12 |
| Dwr Cymru Welsh Water | East Cricklewood Close Bridgend Overflow | River Ogmore | 17 | 49 h 28m | 2.04 |
| Dwr Cymru Welsh Water | West Cricklewood Close Bridgend Overflow | River Ogmore | 17 | 36 h 56m | 1.5 |
| Dwr Cymru Welsh Water | Sanderling Close Storm Overflow | Severn Estuary | 2 | 24 h 44m | 1 |
| Dwr Cymru Welsh Water | Mack Worth Road Overflow | Bristol Channel Outer North | 28 | 23 h 56m | 0.96 |
| Dwr Cymru Welsh Water | Windsor Road Porthcawl Storm Overflow | Bristol Channel | 14 | 13 h 11m | 0.54 |
| Dwr Cymru Welsh Water | Beach Road Porthcawl 1 Storm Overflow | Bristol Channel | 8 | 11 h 45m | 0.46 |
| Dwr Cymru Welsh Water | Newbridge Fields Storm Overflow | River Ogmore | 5 | 7 h 13m | 0.29 |
| Dwr Cymru Welsh Water | Iron Gate Porthcawl Storm Overflow | Bristol Channel at Irongate Point | 2 | 5 h 15m | 0.21 |
| Dwr Cymru Welsh Water | Milton Drive Bridgend Storm Overflow | Nant Cefn Glas | 10 | 4 h 57m | 0.17 |
| Dwr Cymru Welsh Water | Beach Road Porthcawl 2 Storm Overflow | Bristol Channel via Newton Point | 4 | 4 h 15m | 0.17 |
| Dwr Cymru Welsh Water | Riverside Coytrahen Overflow | River Llynfi | 11 | 3 h 39m | 0.12 |
| Dwr Cymru Welsh Water | Heol Bryncwils Storm Overflow | River Ogmore | 6 | 3 h 12m | 0.12 |
| Dwr Cymru Welsh Water | Wildmill Lane Bridgend Storm Overflow | River Ogmore | 2 | 2 h 30m | 0.08 |
| Dwr Cymru Welsh Water | Fulmar Road Storm Overflow | Underground Culvert discharging to the Wilderness | 2 | 0 h 44m | 0 |
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