Sewage Map

Duffield - Town Street (The Lodge) (CSO)

Storm overflow operated by Severn Trent Water. The source names River Derwent as the receiving water.

32
Spills in 2025
102.7
Recorded hours
100%
Monitor operation
2
Years listed
Current status unknown

Checking the latest monitor report…

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How it compares in 2025

Duffield - Town Street (The Lodge) (CSO) recorded 32 spills in 2025. That is more than 76% of the 14,239 overflows in England with a reported figure, and ranks 3,223rd nationally. Among Severn Trent Water overflows it ranks 334th of 2,431; the median Severn Trent Water overflow recorded 8 spills. On the Derwent from Amber to Bottle Brook waterbody it ranks 5th of 33.

GroupRank by spillsMedian spillsMedian hours
This outlet–32102.7
England3,223rd of 14,2391122.3
Severn Trent Water334th of 2,431816.2
Derwent from Amber to Bottle Brook5th of 3388.7

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

352024322025
From 2024 to 2025, the reported count went from 35 to 32 spills. The highest count was 35 in 2024 and the lowest was 32 in 2025. The monitor worked for less than 90% of 2024, so that count may be low.Amber bars mark years when the monitor worked for less than 90% of the year.
YearSpillsDurationMonitor operationSource
202532102.7 hours100%Official data
202435103.6 hours84.8%Low coverageOfficial 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
Severn Trent Water
Outlet type
Storm overflow on the sewer network
Permit
T/44/07229/O
Activity reference
A1
Grid reference
SK3501343067
Waterbody ID
GB104028052310Official 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 km east of the Makeney 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

Questions about Duffield - Town Street (The Lodge) (CSO)

Who operates Duffield - Town Street (The Lodge) (CSO)?
Severn Trent Water is the operator named in the annual record. The permit reference is T/44/07229/O.
Where does Duffield - Town Street (The Lodge) (CSO) discharge?
The source names River Derwent as the receiving water. This does not show how far a discharge travelled.
How many times did Duffield - Town Street (The Lodge) (CSO) spill in 2025?
The 2025 return records 32 counted spill events and 102.7 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 Duffield - Town Street (The Lodge) (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 Duffield - Town Street (The Lodge) (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 Duffield - Town Street (The Lodge) (CSO) compare with other overflows?
Duffield - Town Street (The Lodge) (CSO) recorded 32 spills in 2025. That is more than 76% of the 14,239 overflows in England with a reported figure, and ranks 3,223rd nationally. Among Severn Trent Water overflows it ranks 334th of 2,431; the median Severn Trent Water overflow recorded 8 spills. On the Derwent from Amber to Bottle Brook waterbody it ranks 5th of 33. 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.