Elmcroft Avenue Tq40883902 CSO
Storm overflow operated by Thames Water. The source names The River Roding as the receiving water.
- 10
- Spills in 2025
- 2.8
- Recorded hours
- 89%
- Monitor operation
- 2
- Years listed
Checking the latest monitor report…
How it compares in 2025
Elmcroft Avenue Tq40883902 CSO recorded 10 spills in 2025. That is more than 47% of the 14,239 overflows in England with a reported figure, and ranks 7,195th nationally. Among Thames Water overflows it ranks 236th of 579; the median Thames Water overflow recorded 6 spills. On the Lower Roding (Loughton to Thames) waterbody it ranks 9th of 32.
The monitor worked for 89% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 10 | 2.8 |
| England | 7,195th of 14,239 | 11 | 22.3 |
| Thames Water | 236th of 579 | 6 | 20.9 |
| Lower Roding (Loughton to Thames) | 9th of 32 | 4 | 2.1 |
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 | 10 | 2.8 hours | 89%Low coverage | Official data |
| 2024 | 11 | 3.5 hours | 88.2%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
- CANM.0910
- Activity reference
- 1 activity on permit
- Grid reference
- TQ4140089300
- Waterbody ID
- GB106037028181Official 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 2.5 km west of the Redbridge 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
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- Elmcroft Avenue (Cowley Road) Tq40885906 CSOCurrent status unknown
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- Elmcroft Avenue 115 Tq40899104 CSOCurrent status unknown
Thames Water · The River Roding
Questions about Elmcroft Avenue Tq40883902 CSO
- Who operates Elmcroft Avenue Tq40883902 CSO?
- Thames Water is the operator named in the annual record. The permit reference is CANM.0910.
- Where does Elmcroft Avenue Tq40883902 CSO discharge?
- The source names The River Roding as the receiving water. This does not show how far a discharge travelled.
- How many times did Elmcroft Avenue Tq40883902 CSO spill in 2025?
- The 2025 return records 10 counted spill events and 2.8 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 89% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Elmcroft Avenue Tq40883902 CSO 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 Elmcroft Avenue Tq40883902 CSO?
- 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 Elmcroft Avenue Tq40883902 CSO compare with other overflows?
- Elmcroft Avenue Tq40883902 CSO recorded 10 spills in 2025. That is more than 47% of the 14,239 overflows in England with a reported figure, and ranks 7,195th nationally. Among Thames Water overflows it ranks 236th of 579; the median Thames Water overflow recorded 6 spills. On the Lower Roding (Loughton to Thames) waterbody it ranks 9th of 32. 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.