Receiving watercourse
River Mersey Estuary
12 monitored storm overflows record River Mersey Estuary 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.
12
Storm overflows
0
Active right now
0
Monitors offline
124
Spill events · 12 months
15,114h
Recorded discharge · 12 months
6
Open discrepancies
Every monitored overflow· 12
Each links to its full record — spill history, nearby water-quality sampling, citizen reports, and pre-filled accountability letters.
- UUP02009United Utilitiesinactive
- UUP02125United Utilitiesinactive
- UUP02010United Utilitiesinactive
- UUP01266United Utilitiesinactive
- UUP00648United Utilitiesinactive
- UUP02011United Utilitiesinactive
- UUP00520United Utilitiesinactive
- UUP00183United Utilitiesinactive
- UUP02012United Utilitiesinactive
- UUP00639United Utilitiesinactive
- UUP00768United Utilitiesinactive
- UUP00334United Utilitiesinactive
Seen something?
Sewage debris, foam, dead fish — citizen sightings are cross-referenced against the official discharge data above and strengthen the public record.