Factory Lane/CSO
Storm overflow operated by Yorkshire Water. The source names Tributary of the River Colne as the receiving water.
- 23
- Spills in 2025
- 60.8
- Recorded hours
- 87.6%
- Monitor operation
- 6
- Years listed
Checking the latest monitor report…
How it compares in 2025
Factory Lane/CSO recorded 23 spills in 2025. That is more than 67% of the 14,239 overflows in England with a reported figure, and ranks 4,513th nationally. Among Yorkshire Water overflows it ranks 864th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the River Colne from Wessenden Brook to R Holme waterbody it ranks 11th of 35.
The monitor worked for 87.6% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 23 | 60.8 |
| England | 4,513th of 14,239 | 11 | 22.3 |
| Yorkshire Water | 864th of 2,176 | 16 | 37.8 |
| River Colne from Wessenden Brook to R Holme | 11th of 35 | 14 | 20.3 |
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 | 23 | 60.8 hours | 87.6%Low coverage | Official data |
| 2024 | 32 | 62 hours | 99.9% | Official data |
| 2023 | 34 | 76.5 hours | 99.8% | Official data |
| 2022 | 59 | 112 hours | 99.9% | Official data |
| 2021 | 29 | 44.3 hours | 85.2%Low coverage | Official data |
| 2020 | 86 | 388.8 hours | 95% | 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
- Storm overflow on the sewer network
- Permit
- WRA9180
- Activity reference
- A1
- Grid reference
- SE1202815862
- Waterbody ID
- GB104027063330Official 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 2.1 km south-west of the Huddersfield reference point in the ONS built-up areas data.
Area and water pages
- Brighouse area →
- Kirkheaton area →
- Elland area →
- Moor Top area →
- Holywell Green and Stainland area →
- Mirfield area →
- Lepton area →
- Huddersfield area →
- Outlane area →
- Scapegoat Hill area →
- Bolster Moor area →
- Netherton (Kirklees) area →
- Kirkburton area →
- Linthwaite and Slaithwaite area →
- River Colne from Wessenden Brook to R Holme waterbody →
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
- Milns Shaw Lane/No 2 CSOCurrent status unknown
Yorkshire Water · Tributary of the River Colne
- Scar Lane/CSOCurrent status unknown
Yorkshire Water · River Colne
- Morley Lane/CSOCurrent status unknown
Yorkshire Water · River Colne
- Milnsbridge/CSOCurrent status unknown
Yorkshire Water · Longwood Brook
Questions about Factory Lane/CSO
- Who operates Factory Lane/CSO?
- Yorkshire Water is the operator named in the annual record. The permit reference is WRA9180.
- Where does Factory Lane/CSO discharge?
- The source names Tributary of the River Colne as the receiving water. This does not show how far a discharge travelled.
- How many times did Factory Lane/CSO spill in 2025?
- The 2025 return records 23 counted spill events and 60.8 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 87.6% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Factory Lane/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 Factory Lane/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 Factory Lane/CSO compare with other overflows?
- Factory Lane/CSO recorded 23 spills in 2025. That is more than 67% of the 14,239 overflows in England with a reported figure, and ranks 4,513th nationally. Among Yorkshire Water overflows it ranks 864th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the River Colne from Wessenden Brook to R Holme waterbody it ranks 11th of 35. 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.