Durham University STW, Northumbrian Water (245/1064 · C · NWL00472)

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

25
Spills in 2025: 86.9
Recorded hours: 99.7%
Monitor operation: 6
Years listed

The reported spill count was 20 lower than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

How it compares in 2025

Durham University STW, Northumbrian Water (245/1064 · C · NWL00472) recorded 25 spills in 2025. That is more than 69% of the 14,239 overflows in England with a reported figure, and ranks 4,212th nationally. Among Northumbrian Water overflows it ranks 418th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Wear from Croxdale Beck to Lumley Park Burn waterbody it ranks 9th of 46.

Group	Rank by spills	Median spills	Median hours
This outlet	–	25	86.9
England	4,212th of 14,239	11	22.3
Northumbrian Water	418th of 1,559	11	15.6
Wear from Croxdale Beck to Lumley Park Burn	9th of 46	5	5.3

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

From 2020 to 2025, the reported count went from 45 to 25 spills. The highest count was 66 in 2023 and the lowest was 25 in 2025.Amber bars mark years when the monitor worked for less than 90% of the year.

Year	Spills	Duration	Monitor operation	Source
2025	25	86.9 hours	99.7%	Official data
2024	45	149.6 hours	99.9%	Official data
2023	66	208.3 hours	99.9%	Official data
2022	Unknown	Unknown	0%Low coverage	Official data
2021	Unknown	Unknown	0%Low coverage	Official data
2020	45	608.8 hours	99.9%	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: Inlet storm overflow at a wastewater treatment works
Permit: 245/1064
Activity reference: C
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 “Inlet SO at WwTW”: inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the 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.

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 ↗

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Questions about Durham University STW, Northumbrian Water (245/1064 · C · NWL00472)

Who operates Durham University STW, Northumbrian Water (245/1064 · C · NWL00472)?: 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 · C · NWL00472) 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 · C · NWL00472) spill in 2025?: The 2025 return records 25 counted spill events and 86.9 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 99.7% 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 · C · NWL00472) 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 · C · NWL00472)?: The annual return lists the asset type as “Inlet SO at WwTW”, which means inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
How does Durham University STW, Northumbrian Water (245/1064 · C · NWL00472) compare with other overflows?: Durham University STW, Northumbrian Water (245/1064 · C · NWL00472) recorded 25 spills in 2025. That is more than 69% of the 14,239 overflows in England with a reported figure, and ranks 4,212th nationally. Among Northumbrian Water overflows it ranks 418th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Wear from Croxdale Beck to Lumley Park Burn waterbody it ranks 9th 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.