Sewage Map

Durham University STW, Northumbrian Water (245/1064 · B · NWL00473)

Storm overflow operated by Northumbrian Water. The source names Saltwell Gill as the receiving water.

17
Spills in 2025
77.1
Recorded hours
99.9%
Monitor operation
6
Years listed

The reported spill count was 9 lower than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

Open official annual data ↗

How it compares in 2025

Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) recorded 17 spills in 2025. That is more than 59% of the 14,239 overflows in England with a reported figure, and ranks 5,597th nationally. Among Northumbrian Water overflows it ranks 584th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Wear from Croxdale Beck to Lumley Park Burn waterbody it ranks 15th of 46.

GroupRank by spillsMedian spillsMedian hours
This outlet–1777.1
England5,597th of 14,2391122.3
Northumbrian Water584th of 1,5591115.6
Wear from Croxdale Beck to Lumley Park Burn15th of 4655.3

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

442020572021n/a2022362023262024172025
From 2020 to 2025, the reported count went from 44 to 17 spills. The highest count was 57 in 2021 and the lowest was 17 in 2025. The monitor worked for less than 90% of 2021, 2023, so those counts may be low.Amber bars mark years when the monitor worked for less than 90% of the year.
YearSpillsDurationMonitor operationSource
20251777.1 hours99.9%Official data
202426190.8 hours100%Official data
202336286.8 hours51.6%Low coverageOfficial data
2022UnknownUnknown0%Low coverageOfficial data
202157557.5 hours74.7%Low coverageOfficial data
202044467 hours99.9%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
Northumbrian Water
Outlet type
Storm tank at a wastewater treatment works
Permit
245/1064
Activity reference
B
Grid reference
NZ2736039830
Waterbody ID
GB103024077621Official 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 “Storm tank at WwTW”: storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment 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 2.5 km west of the High Shincliffe 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.

Open official source ↗

Other outlet records nearby

Questions about Durham University STW, Northumbrian Water (245/1064 · B · NWL00473)

Who operates Durham University STW, Northumbrian Water (245/1064 · B · NWL00473)?
Northumbrian Water is the operator named in the annual record. The permit reference is 245/1064.
Where does Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) discharge?
The source names Saltwell Gill as the receiving water. This does not show how far a discharge travelled.
How many times did Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) spill in 2025?
The 2025 return records 17 counted spill events and 77.1 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 99.9% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) 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 Durham University STW, Northumbrian Water (245/1064 · B · NWL00473)?
The annual return lists the asset type as “Storm tank at WwTW”, which means storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
How does Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) compare with other overflows?
Durham University STW, Northumbrian Water (245/1064 · B · NWL00473) recorded 17 spills in 2025. That is more than 59% of the 14,239 overflows in England with a reported figure, and ranks 5,597th nationally. Among Northumbrian Water overflows it ranks 584th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Wear from Croxdale Beck to Lumley Park Burn waterbody it ranks 15th of 46. 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.