Receiving watercourse
Greenfield Valley "Holywell" stream
2 monitored storm overflows record Greenfield Valley "Holywell" stream as their receiving watercourse in the National Storm Overflow Hub. Operated by Dwr Cymru Welsh Water.
2
Storm overflows
0
Active right now
0
Monitors offline
33
Spill events · 12 months
5,050h
Recorded discharge · 12 months
1
Open discrepancies
Every monitored overflow· 2
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.