Carlisle Street 129/CSO

Storm overflow operated by Yorkshire Water. The source names Duke of Norfolk'S Culvert as the receiving water.

Unknown
Spills in 2025: Unknown
Recorded hours: 0%
Monitor operation: 6
Years listed

Current status unknown

Checking the latest monitor report…

Annual spill history

From 2020 to 2024, the reported count went from 0 to 0 spills. Every listed year has the same count. The monitor worked for less than 90% of 2020, 2023, 2024, so those counts may be low.Amber bars mark years when the monitor worked for less than 90% of the year.

Year	Spills	Duration	Monitor operation	Source
2025	Unknown	Unknown	0%Low coverage	Official data
2024	0	0 hours	15.4%Low coverage	Official data
2023	0	0 hours	39.8%Low coverage	Official data
2022	Unknown	Unknown	0%Low coverage	Official data
2021	Unknown	Unknown	0%Low coverage	Official data
2020	0	0 hours	0%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: Yorkshire Water
Outlet type: Storm overflow on the sewer network
Permit: E4
Activity reference: A1
Grid reference: SK3743789533
Waterbody ID: GB104027057412Official 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 3.4 km north-east of the Sheffield 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.

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Other outlet records nearby

Carlisle Street East/CSO
Yorkshire Water · Duke of Norfolk'S Culvert
Current status unknown

Owler Lane/CSO
Yorkshire Water · Bagley Dyke
Current status unknown
Dunmow Road/CSO
Yorkshire Water · Bagley Dyke
Current status unknown
Meadowhall Way/No 2 CSO
Yorkshire Water · River Don
Current status unknown

Questions about Carlisle Street 129/CSO

Who operates Carlisle Street 129/CSO?: Yorkshire Water is the operator named in the annual record. The permit reference is E4.
Where does Carlisle Street 129/CSO discharge?: The source names Duke of Norfolk'S Culvert as the receiving water. This does not show how far a discharge travelled.
How many times did Carlisle Street 129/CSO spill in 2025?: The 2025 return has no usable spill count for this outlet. Missing is not the same as zero.
Can I trust the 2025 figures for this outlet?: The monitor worked for 0% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
Is Carlisle Street 129/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 Carlisle Street 129/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.
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.