Receiving watercourse
Afon Marlais
5 monitored storm overflows record Afon Marlais as their receiving watercourse in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
5
Storm overflows
0
Active right now
0
Monitors offline
54
Spill events · 12 months
15,152h
Recorded discharge · 12 months
1
Open discrepancies
Every monitored overflow· 5
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.