Receiving watercourse
River Mersey (via a surface water sewer)
5 monitored storm overflows record River Mersey (via a surface water sewer) as their receiving watercourse in the National Storm Overflow Hub. Operated by United Utilities.
This watercourse is part of our featured River Mersey coverage — that page aggregates the whole river, including tributaries and estuary stretches.
5
Storm overflows
0
Active right now
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Monitors offline
61
Spill events · 12 months
7,973h
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.