Featured river · mersey
River Mersey
70 miles through Manchester and Liverpool. Once Britain's most polluted river — recovering, but heavily monitored.
128
Storm overflows
0
Active right now
0
Spill events · 24 h
14
Open discrepancies
1
Monitors offline
89
WIMS sampling points
10
Hydrology stations
Spill record· last 12 months · across the river
646
spill events
+21433% vs prior 12m
23,123h
cumulative discharge
+944314% vs prior 12m
14 weeks
longest single event (all time)
2024-12-01
first event on record
Truth Engine flags· 14 open
- CriticalExtended spill (>72 h)United Utilities · UUP02154 · River Mersey
- CriticalExtended spill (>72 h)United Utilities · UUP00748 · River Mersey via SW Sewer
- CriticalExtended spill (>72 h)United Utilities · UUP01924 · Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP01161 · Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP01071 · River Mersey
- CriticalExtended spill (>72 h)United Utilities · UUP02241 · River Mersey
- CriticalExtended spill (>72 h)United Utilities · UUP00816 · River Mersey (via a surface water sewer)
- CriticalExtended spill (>72 h)United Utilities · UUP00644 · Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP02125 · River Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP02121 · Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP02010 · River Mersey Estuary
- CriticalExtended spill (>72 h)United Utilities · UUP00639 · River Mersey Estuary
+ 2 more in the full feed