London bridge

Storm overflow operated by Thames Water. The source names Tidal Thames as the receiving water.

7
Spills in 2025: 3.7
Recorded hours: 100%
Monitor operation: 3
Years listed

The reported spill count was 2 lower than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

How it compares in 2025

London bridge recorded 7 spills in 2025. That is more than 40% of the 14,239 overflows in England with a reported figure, and ranks 8,130th nationally. Among Thames Water overflows it ranks 267th of 579; the median Thames Water overflow recorded 6 spills. On the Thames Middle waterbody it ranks 17th of 71.

Group	Rank by spills	Median spills	Median hours
This outlet	–	7	3.7
England	8,130th of 14,239	11	22.3
Thames Water	267th of 579	6	20.9
Thames Middle	17th of 71	2	2.8

Rank 1 has the most spills. Equal counts share a rank. Only overflows with a reported count are ranked. Counts do not measure volume, so a higher rank does not mean more sewage.

Annual spill history

From 2023 to 2025, the reported count went from 7 to 7 spills. The highest count was 9 in 2024 and the lowest was 7 in 2023. The monitor worked for less than 90% of 2023, so that count may be low.Amber bars mark years when the monitor worked for less than 90% of the year.

Year	Spills	Duration	Monitor operation	Source
2025	7	3.7 hours	100%	Official data
2024	9	16.8 hours	100%	Official data
2023	7	12.1 hours	81.3%Low coverage	Official data

A missing figure means the source did not provide a usable value. A zero is shown as zero. Monitor operation below 90% can make comparison less reliable.

Outlet details

Water company: Thames Water
Outlet type: Storm overflow on the sewer network
Permit: TEMP.2743
Activity reference: Temporary Consent Schedule
Grid reference: TQ3286080600
Waterbody ID: GB530603911402Official waterbody record ↗
Location source: Official annual grid reference
Location precision: About 1 metres
Location note: Unknown

About the name and type

The annual return lists this asset as “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.

The waterbody link opens the Environment Agency record for the exact ID in the return. It is a source lookup; we do not import its classification.

Where it is

The recorded position is about 0.8 km south of the City and County of the City of London reference point in the ONS built-up areas data.

Area and water pages

Thames Middle waterbody →

Check the official record

Public access to this outlet is unknown. Do not enter restricted land or use this page as a route guide.

Open official source ↗

Other outlet records nearby

Goswell street
Thames Water · R.THAMES ( Tidal )
Current status unknown

Beer lane
Thames Water · R.THAMES ( Tidal )
Current status unknown
Iron gate
Thames Water · R.THAMES ( Tidal )
Current status unknown
Pauls pier
Thames Water · Tidal Thames
Current status unknown

Questions about London bridge

Who operates London bridge?: Thames Water is the operator named in the annual record. The permit reference is TEMP.2743.
Where does London bridge discharge?: The source names Tidal Thames as the receiving water. This does not show how far a discharge travelled.
How many times did London bridge spill in 2025?: The 2025 return records 7 counted spill events and 3.7 hours of recorded discharge. Spills are counted with the 12/24-hour method, so this is not a count of every start signal.
Can I trust the 2025 figures for this outlet?: The monitor worked for 100% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is London bridge discharging right now?: This record is linked to a company live feed. The panel above shows the latest report we hold, with its date. That report can be old, and the monitor can be offline, so check the date before relying on it. A report that no discharge is taking place is not a water-quality result.
How accurate is the map marker?: The marker comes from the grid reference in the official annual return, which is accurate to about 1 metres. It shows the recorded outlet position, not the extent of any discharge.
What kind of outlet is London bridge?: The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
How does London bridge compare with other overflows?: London bridge recorded 7 spills in 2025. That is more than 40% of the 14,239 overflows in England with a reported figure, and ranks 8,130th nationally. Among Thames Water overflows it ranks 267th of 579; the median Thames Water overflow recorded 6 spills. On the Thames Middle waterbody it ranks 17th of 71. Ranks compare counted spill events only. They do not compare volume or harm.
Does zero spills mean the water was safe?: No. A zero means the annual return recorded zero counted spill events for this outlet and year. It is not a water-quality test, and pollution can come from other sources.