Receiving watercourse
River Ely
29 monitored storm overflows on the River Ely are listed in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
29
Storm overflows
0
Active right now
0
Monitors offline
359
Spill events · 12 months
541h
Recorded discharge · 12 months
0
Open discrepancies
Every monitored overflow· 29
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- Ely Valley Road Storm OverflowDwr Cymru Welsh Waterinactive
- Coslech WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Lanelay Park Storm OverflowDwr Cymru Welsh Waterinactive
- Miskin Railway Storm OverflowDwr Cymru Welsh Waterinactive
- Dyffryn Isaf WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Mill Street West Tonyrefail Storm OverflowDwr Cymru Welsh Waterinactive
- Tonyrefail Police Station Storm OverflowDwr Cymru Welsh Waterinactive
- Ynysddu Storm OverflowDwr Cymru Welsh Waterinactive
- Mill Street Tonyrefail Storm OverflowDwr Cymru Welsh Waterinactive
- Fairview Storm OverflowDwr Cymru Welsh Waterinactive
- Rhyd-Y-Nant Storm OverflowDwr Cymru Welsh Waterinactive
- Maes-Y-Felin Storm OverflowDwr Cymru Welsh Waterinactive
- Peterston-super-Ely WwTW Storm OverflowDwr Cymru Welsh Waterinactive
- Penarth Road Storm OverflowDwr Cymru Welsh Waterinactive
- Mill Road 1 Storm OverflowDwr Cymru Welsh Waterinactive
- Trelai Park Storm OverflowDwr Cymru Welsh Waterinactive
- Heol Miles Storm OverflowDwr Cymru Welsh Waterinactive
- Cardiff Western District Storm OverflowDwr Cymru Welsh Waterinactive
- Whitebridge Storm OverflowDwr Cymru Welsh Waterinactive
- Waunrhydd Road Storm OverflowDwr Cymru Welsh Waterinactive
- Bishopston Rd Cardiff OverflowDwr Cymru Welsh Waterinactive
- Dan-y-Bryn Storm OverflowDwr Cymru Welsh Waterinactive
- Brynsadler Storm OverflowDwr Cymru Welsh Waterinactive
- Tynybryn Road Storm OverflowDwr Cymru Welsh Waterinactive
- Ashdale Road Storm OverflowDwr Cymru Welsh Waterinactive
- Penally Road Ely Cardiff OverflowDwr Cymru Welsh Waterinactive
- Cogan Flooding Relief Storm OverflowDwr Cymru Welsh Waterinactive
- Plymouth Wood Road Storm OverflowDwr Cymru Welsh Waterinactive
- St Fagans 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.