Ilkley/STW/6Xdwf Overflow
Storm overflow operated by Yorkshire Water. The source names River Wharfe as the receiving water.
- 71
- Spills in 2025
- 298.3
- Recorded hours
- 100%
- Monitor operation
- 3
- Years listed
The reported spill count was 3 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
Ilkley/STW/6Xdwf Overflow recorded 71 spills in 2025. That is more than 94% of the 14,239 overflows in England with a reported figure, and ranks 743rd nationally. Among Yorkshire Water overflows it ranks 124th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Wharfe from Barben Beck/River Dibb to Hundwith Beck waterbody it ranks 3rd of 14.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 71 | 298.3 |
| England | 743rd of 14,239 | 11 | 22.3 |
| Yorkshire Water | 124th of 2,176 | 16 | 37.8 |
| Wharfe from Barben Beck/River Dibb to Hundwith Beck | 3rd of 14 | 26 | 137.8 |
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 | 71 | 298.3 hours | 100% | Official data |
| 2024 | 74 | 386 hours | 100% | Official data |
| 2023 | 82 | 299 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
- Yorkshire Water
- Outlet type
- Inlet storm overflow at a wastewater treatment works
- Permit
- 27/19/0045
- Activity reference
- A3
- Grid reference
- SE1240048430
- Waterbody ID
- GB104027064257Official 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 “Inlet SO at WwTW”: inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the 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 1.4 km north-east of the Ilkley reference point in the ONS built-up areas data.
Designated bathing waters within 3 km in a straight line:
Distance does not show that water from this outlet reaches a bathing water. Check the official bathing-water profile for its classification and advice.
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
- Ilkley/STW/3Xdwf OverflowCurrent status unknown
Yorkshire Water · River Wharfe
- Ilkley Middleton/CSOCurrent status unknown
Yorkshire Water · River Wharfe
- Leeds Road Ilkley/2 CSOCurrent status unknown
Yorkshire Water · The River Wharfe
- Rivadale View/CSOCurrent status unknown
Yorkshire Water · River Wharfe
Questions about Ilkley/STW/6Xdwf Overflow
- Who operates Ilkley/STW/6Xdwf Overflow?
- Yorkshire Water is the operator named in the annual record. The permit reference is 27/19/0045.
- Where does Ilkley/STW/6Xdwf Overflow discharge?
- The source names River Wharfe as the receiving water. This does not show how far a discharge travelled.
- How many times did Ilkley/STW/6Xdwf Overflow spill in 2025?
- The 2025 return records 71 counted spill events and 298.3 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 Ilkley/STW/6Xdwf Overflow 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 Ilkley/STW/6Xdwf Overflow?
- The annual return lists the asset type as “Inlet SO at WwTW”, which means inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
- How does Ilkley/STW/6Xdwf Overflow compare with other overflows?
- Ilkley/STW/6Xdwf Overflow recorded 71 spills in 2025. That is more than 94% of the 14,239 overflows in England with a reported figure, and ranks 743rd nationally. Among Yorkshire Water overflows it ranks 124th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Wharfe from Barben Beck/River Dibb to Hundwith Beck waterbody it ranks 3rd of 14. 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.