Featured river · mersey
River Mersey
70 miles through Manchester and Liverpool. Once Britain's most polluted river — recovering, but heavily monitored.
128
Storm overflows
1
Active right now
39
Spill events · 24 h
19
Open discrepancies
2
Monitors offline
90
WIMS sampling points
10
Hydrology stations
Spill record· last 12 months · across the river
1,906
spill events
+38020% vs prior 12m
4,118h
cumulative discharge
+161416% vs prior 12m
13 weeks
longest single event (all time)
2024-12-01
first event on record
Currently spilling· 1
Truth Engine flags· 19 open
- WarnActive spill · no recent testUnited Utilities · UUP00243 · Mersey Estuary
- WarnActive spillUnited Utilities · UUP00243 · Mersey Estuary
- WarnActive spill · no recent testUnited Utilities · UUP02125 · River Mersey Estuary
- WarnActive spillUnited Utilities · UUP02125 · River Mersey Estuary
- WarnDry-weather spillUnited Utilities · UUP01289 · The Mersey Estuary
- WarnMonitor offlineUnited Utilities · UUP00748 · River Mersey via SW Sewer
- WarnMonitor offlineUnited Utilities · UUP01926 · River Mersey
- CautionDry-weather spillUnited Utilities · UUP01867 · River Mersey
- CautionDry-weather spillUnited Utilities · UUP00456 · Micker Brook a tributary of the River Mersey
- CautionDry-weather spillUnited Utilities · UUP02072 · River Mersey
- CautionDry-weather spillUnited Utilities · UUP00054 · River Mersey
- WatchDry-weather spillUnited Utilities · UUP02125 · River Mersey Estuary
+ 7 more in the full feed
Recent spill events· last 7 days · 30
- 2026-09-18 23:30 UTCUnited Utilities · UUP01071 · River Mersey15 min
- 2026-09-18 19:58 UTCUnited Utilities · UUP01161 · Mersey Estuary1.4 h
- 2026-09-18 18:01 UTCUnited Utilities · UUP02022 · River Mersey3 h
- 2026-09-18 17:26 UTCUnited Utilities · UUP00243 · Mersey Estuary10.5 h
- 2026-09-18 17:18 UTCUnited Utilities · UUP01924 · Mersey Estuary12 min
- 2026-09-18 17:14 UTCUnited Utilities · UUP01966 · Mersey Estuary2 min
- 2026-09-18 17:11 UTCUnited Utilities · UUP02125 · River Mersey Estuaryongoing
- 2026-09-18 16:56 UTCUnited Utilities · UUP01918 · The Mersey Estuary2 min
- 2026-09-18 16:28 UTCUnited Utilities · UUP01966 · Mersey Estuary2 min
- 2026-09-18 16:21 UTCUnited Utilities · UUP00335 · Mersey Estuary8.7 h
- 2026-09-18 16:16 UTCUnited Utilities · UUP01659 · Rivacre Brook a tributary of the River Mersey20 min
- 2026-09-18 16:10 UTCUnited Utilities · UUP01924 · Mersey Estuary0 min
- 2026-09-18 16:03 UTCUnited Utilities · UUP02194 · Mersey Estuary6 min
- 2026-09-18 15:56 UTCUnited Utilities · UUP01966 · Mersey Estuary0 min
- 2026-09-18 15:54 UTCUnited Utilities · UUP00639 · River Mersey Estuary16 min
- 2026-09-18 15:48 UTCUnited Utilities · UUP00636 · River Mersey3.5 h
- 2026-09-18 15:36 UTCUnited Utilities · UUP00899 · River Mersey19 min
- 2026-09-18 15:36 UTCUnited Utilities · UUP01161 · Mersey Estuary18 min
- 2026-09-18 15:33 UTCUnited Utilities · UUP00641 · Mersey Estuary57 min
- 2026-09-18 15:33 UTCUnited Utilities · UUP01792 · Mersey Estuary1.7 h
- 2026-09-18 15:32 UTCUnited Utilities · UUP00762 · River Mersey (via a surface water sewer)2.1 h
- 2026-09-18 15:30 UTCUnited Utilities · UUP01071 · River Mersey1 h
- 2026-09-18 15:30 UTCUnited Utilities · UUP01289 · The Mersey Estuary1.3 h
- 2026-09-18 15:28 UTCUnited Utilities · UUP00520 · River Mersey Estuary26 min
- 2026-09-18 15:22 UTCUnited Utilities · UUP00678 · Mersey Estuary (tidal)24 min
- 2026-09-18 15:20 UTCUnited Utilities · UUP01420 · Mersey Estuary40 min
- 2026-09-18 15:15 UTCUnited Utilities · UUP02011 · River Mersey Estuary2 h
- 2026-09-18 15:00 UTCUnited Utilities · UUP01161 · Mersey Estuary0 min
- 2026-09-18 14:58 UTCUnited Utilities · UUP00639 · River Mersey Estuary6 min
- 2026-09-18 14:58 UTCUnited Utilities · UUP01428 · Mersey Estuary1.1 h