Receiving watercourse
Rhondda Fawr River
13 monitored storm overflows on the Rhondda Fawr River are listed in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
13
Storm overflows
0
Active right now
0
Monitors offline
717
Spill events · 12 months
464h
Recorded discharge · 12 months
0
Open discrepancies
Every monitored overflow· 13
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- Hermon Street Treorchy Storm OverflowDwr Cymru Welsh Waterinactive
- Ynys Park Storm OverflowDwr Cymru Welsh Waterinactive
- Glynfach Road Porth Storm OverflowDwr Cymru Welsh Waterinactive
- Tylacelyn Road Hughes Street Storm OverflowDwr Cymru Welsh Waterinactive
- Lewis Street Pentre Storm OverflowDwr Cymru Welsh Waterinactive
- Ystrad Road Church Road Junction Storm OverflowDwr Cymru Welsh Waterinactive
- Hill Street Storm OverflowDwr Cymru Welsh Waterinactive
- Griffin Park Pentre Storm OverflowDwr Cymru Welsh Waterunknown
- Ynyscrug Roundabout Storm OverflowDwr Cymru Welsh Waterunknown
- Ynyscynon Road Storm OverflowDwr Cymru Welsh Waterinactive
- Clarence Street Pentre Storm OverflowDwr Cymru Welsh Waterinactive
- David Street Treherbert Storm OverflowDwr Cymru Welsh Waterinactive
- Tyntyla Road Tonypandy Storm OverflowDwr Cymru Welsh Waterinactive
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.