Allendale road
Storm overflow operated by Thames Water. The source names Wembley Brook as the receiving water.
- 0
- Spills in 2025
- 0
- Recorded hours
- 92.3%
- Monitor operation
- 3
- Years listed
The reported spill count was the same as in 2024. This compares event counts, not discharge volume.
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Allendale road recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 0 | 0 |
| England | 12,009th of 14,239 | 11 | 22.3 |
| Thames Water | 445th of 579 | 6 | 20.9 |
| Lower Brent | 12th of 21 | 1 | 0.5 |
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
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | 0 | 0 hours | 92.3% | Official data |
| 2024 | 0 | 0 hours | 100% | Official data |
| 2023 | 0 | 0 hours | 99.7% | 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.2367
- Activity reference
- 1 activity on permit
- Grid reference
- TQ1648084910
- Waterbody ID
- GB106039023590Official 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 3.2 km west of the Brent 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
- Eastcote avenueCurrent status unknown
Thames Water · Wembley Brook
- Sudbury heights ave, allendale roadCurrent status unknown
Thames Water · Wembley Brook
- District roadCurrent status unknown
Thames Water · Wembley Brook
- Lyon park avenueCurrent status unknown
Thames Water · Wembley Brook
Questions about Allendale road
- Who operates Allendale road?
- Thames Water is the operator named in the annual record. The permit reference is TEMP.2367.
- Where does Allendale road discharge?
- The source names Wembley Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did Allendale road spill in 2025?
- The 2025 return records 0 counted spill events and 0 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 92.3% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Allendale road 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 Allendale road?
- 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 Allendale road compare with other overflows?
- Allendale road recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. 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.