Stanfree/CSO

Storm overflow operated by Yorkshire Water. The source names Tributary of Barlborough Brook as the receiving water.

0
Spills in 2025: 0
Recorded hours: 100%
Monitor operation: 6
Years listed

The reported spill count was the same as in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

How it compares in 2025

Stanfree/CSO recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.

Group	Rank by spills	Median spills	Median hours
This outlet	–	0	0
England	12,009th of 14,239	11	22.3
Yorkshire Water	1,886th of 2,176	16	37.8

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

From 2020 to 2025, the reported count went from 31 to 0 spills. The highest count was 37 in 2021 and the lowest was 0 in 2024. The monitor worked for less than 90% of 2020, 2022, 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	0	0 hours	100%	Official data
2024	0	0 hours	100%	Official data
2023	1	2.5 hours	99.9%	Official data
2022	19	20.5 hours	87.1%Low coverage	Official data
2021	37	69 hours	99.8%	Official data
2020	31	75.8 hours	82.1%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: WADC57
Activity reference: A1
Grid reference: SK4745874465
Waterbody ID: GB104027057320Official 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 1.9 km north of the Shuttlewood 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

Shuttlewood/No 2 CSO
Yorkshire Water · Hawke Brook
Current status unknown

Clowne (STW) Inlet Works 3Dwf
Severn Trent Water · Millwood Brook
Current status unknown
Clowne (STW) Inlet Works 6Dwf
Severn Trent Water · Millwood Brook
Current status unknown
Iron Cliffe Road/CSO
Yorkshire Water · Tributary of River Doe Lea
Current status unknown

Questions about Stanfree/CSO

Who operates Stanfree/CSO?: Yorkshire Water is the operator named in the annual record. The permit reference is WADC57.
Where does Stanfree/CSO discharge?: The source names Tributary of Barlborough Brook as the receiving water. This does not show how far a discharge travelled.
How many times did Stanfree/CSO spill in 2025?: The 2025 return records 0 counted spill events and 0 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 Stanfree/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 Stanfree/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 Stanfree/CSO compare with other overflows?: Stanfree/CSO recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. 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.