Beddington STW
Storm overflow operated by Thames Water. The source names Beddington effluent carrier/Wa as the receiving water.
- 5
- Spills in 2025
- 13.5
- Recorded hours
- 100%
- Monitor operation
- 3
- Years listed
The reported spill count was 5 lower than 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
Beddington STW recorded 5 spills in 2025. That is more than 34% of the 14,239 overflows in England with a reported figure, and ranks 8,927th nationally. Among Thames Water overflows it ranks 301st of 579; the median Thames Water overflow recorded 6 spills. On the Wandle (Croydon to Wandsworth) and the Graveney waterbody it ranks 8th of 28.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 5 | 13.5 |
| England | 8,927th of 14,239 | 11 | 22.3 |
| Thames Water | 301st of 579 | 6 | 20.9 |
| Wandle (Croydon to Wandsworth) and the Graveney | 8th of 28 | 1 | 0.9 |
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 | 5 | 13.5 hours | 100% | Official data |
| 2024 | 10 | 48.3 hours | 99.7% | Official data |
| 2023 | 7 | 36.8 hours | 100% | 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 tank at a wastewater treatment works
- Permit
- TEMP.2381
- Activity reference
- Temporary Consent Schedule
- Grid reference
- TQ2830066800
- Waterbody ID
- GB106039023460Official 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 “Storm tank at WwTW”: storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
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 north of the Sutton (Sutton) 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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- Merstham STWCurrent status unknown
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- Godstone SSO - 115799Current status unknown
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Questions about Beddington STW
- Who operates Beddington STW?
- Thames Water is the operator named in the annual record. The permit reference is TEMP.2381.
- Where does Beddington STW discharge?
- The source names Beddington effluent carrier/Wa as the receiving water. This does not show how far a discharge travelled.
- How many times did Beddington STW spill in 2025?
- The 2025 return records 5 counted spill events and 13.5 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 Beddington STW 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 Beddington STW?
- The annual return lists the asset type as “Storm tank at WwTW”, which means storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
- How does Beddington STW compare with other overflows?
- Beddington STW recorded 5 spills in 2025. That is more than 34% of the 14,239 overflows in England with a reported figure, and ranks 8,927th nationally. Among Thames Water overflows it ranks 301st of 579; the median Thames Water overflow recorded 6 spills. On the Wandle (Croydon to Wandsworth) and the Graveney waterbody it ranks 8th of 28. 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.