Filgrave STW
Storm overflow operated by Anglian Water. The source names Tributary River Great Ouse NT as the receiving water.
- 1
- Spills in 2025
- 0.3
- Recorded hours
- 100%
- Monitor operation
- 5
- Years listed
The reported spill count was 14 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Filgrave STW recorded 1 spill in 2025. That is more than 15% of the 14,239 overflows in England with a reported figure, and ranks 11,130th nationally. Among Anglian Water overflows it ranks 1,063rd of 1,438; the median Anglian Water overflow recorded 6 spills. On the Ouse (Newport Pagnell to Roxton) waterbody it ranks 14th of 16.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 1 | 0.3 |
| England | 11,130th of 14,239 | 11 | 22.3 |
| Anglian Water | 1,063rd of 1,438 | 6 | 13.5 |
| Ouse (Newport Pagnell to Roxton) | 14th of 16 | 6 | 17.3 |
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 | 1 | 0.3 hours | 100% | Official data |
| 2024 | 15 | 161.3 hours | 100% | Official data |
| 2023 | 0 | 0 hours | 100% | Official data |
| 2022 | Unknown | Unknown | Unknown | Official data |
| 2021 | Unknown | Unknown | Unknown | 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
- Anglian Water
- Outlet type
- Storm tank at a wastewater treatment works
- Permit
- AW1NF3012
- Activity reference
- A2
- Grid reference
- SP8690048350
- Waterbody ID
- GB105033047923Official 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 2.1 km south-west of the Emberton 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
- Weston Underwood WRCCurrent status unknown
Anglian Water · Trib River Gt Ouse
- Weston Underwood WRCCurrent status unknown
Anglian Water · tributary River Great Ouse
- Sherington STWCurrent status unknown
Anglian Water · River Great Ouse NT
- Sherington-Water Lane SSOCurrent status unknown
Anglian Water · tributary River Great Ouse
Questions about Filgrave STW
- Who operates Filgrave STW?
- Anglian Water is the operator named in the annual record. The permit reference is AW1NF3012.
- Where does Filgrave STW discharge?
- The source names Tributary River Great Ouse NT as the receiving water. This does not show how far a discharge travelled.
- How many times did Filgrave STW spill in 2025?
- The 2025 return records 1 counted spill events and 0.3 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 Filgrave STW 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 Filgrave 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 Filgrave STW compare with other overflows?
- Filgrave STW recorded 1 spill in 2025. That is more than 15% of the 14,239 overflows in England with a reported figure, and ranks 11,130th nationally. Among Anglian Water overflows it ranks 1,063rd of 1,438; the median Anglian Water overflow recorded 6 spills. On the Ouse (Newport Pagnell to Roxton) waterbody it ranks 14th of 16. 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.