Clapham storm relief sewer, london
Storm overflow operated by Thames Water. The source names R.THAMES ( Tidal ) as the receiving water.
- Unknown
- Spills in 2025
- Unknown
- Recorded hours
- Unknown
- Monitor operation
- 2
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
Annual spill history
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | Unknown | Unknown | Unknown | Official data |
| 2024 | 34 | 385.3 hours | 90.3% | 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
- CSAB.0554
- Activity reference
- 1 activity on permit
- Grid reference
- TQ3023078090
- 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 3.6 km south-east of the City of Westminster reference point in the ONS built-up areas data.
Area and water pages
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
- Brixton and Clapham Storm ReliefCurrent status unknown
Thames Water · River Thames (Tidal)
- Brixton storm relief sewerCurrent status unknown
Thames Water · R.THAMES ( Tidal )
- Kings scholars pondCurrent status unknown
Thames Water · R.THAMES ( Tidal )
- Low level XX, grosvenor ditch, millbCurrent status unknown
Thames Water · Tidal Thames
Questions about Clapham storm relief sewer, london
- Who operates Clapham storm relief sewer, london?
- Thames Water is the operator named in the annual record. The permit reference is CSAB.0554.
- Where does Clapham storm relief sewer, london discharge?
- The source names R.THAMES ( Tidal ) as the receiving water. This does not show how far a discharge travelled.
- How many times did Clapham storm relief sewer, london spill in 2025?
- The 2025 return has no usable spill count for this outlet. Missing is not the same as zero.
- Can I trust the 2025 figures for this outlet?
- The return gives no monitor operation figure, so we cannot say how much of the year was monitored. Treat the annual figures with care.
- Is Clapham storm relief sewer, london discharging right now?
- This record is not matched to a company live feed, so we cannot show a current report. Only the annual figures are available for this outlet.
- 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 Clapham storm relief sewer, london?
- 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.
- 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.