Norton STW (Northants)

Storm overflow operated by Anglian Water. The source names Norton Brook Grand Union Canal as the receiving water.

15
Spills in 2025: 13.8
Recorded hours: 99.9%
Monitor operation: 5
Years listed

The reported spill count was 104 lower than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

How it compares in 2025

Norton STW (Northants) recorded 15 spills in 2025. That is more than 56% of the 14,239 overflows in England with a reported figure, and ranks 5,981st nationally. Among Anglian Water overflows it ranks 362nd of 1,438; the median Anglian Water overflow recorded 6 spills.

Group	Rank by spills	Median spills	Median hours
This outlet	–	15	13.8
England	5,981st of 14,239	11	22.3
Anglian Water	362nd of 1,438	6	13.5

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 2021 to 2025, the reported count went from 36 to 15 spills. The highest count was 119 in 2024 and the lowest was 15 in 2025. The monitor worked for less than 90% of 2022, so that count 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	15	13.8 hours	99.9%	Official data
2024	119	228 hours	100%	Official data
2023	75	105.5 hours	100%	Official data
2022	56	108 hours	6.6%Low coverage	Official data
2021	36	228 hours	100%	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: Anglian Water
Outlet type: Storm tank at a wastewater treatment works
Permit: AW5NF247
Activity reference: A2
Grid reference: SP6030064100
Waterbody ID: GB105032045340Official 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 km south-west of the Long Buckby Wharf reference point in the ONS built-up areas data.

Area and water pages

Whilton Branch - Lower waterbody →

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

Whilton STW
Anglian Water · Trib R.Nene NT or G.U.C.
Current status unknown

Welton STW (Northants)
Anglian Water · Whilton Branch River Nene (NT)
Current status unknown
Long Buckby STW
Anglian Water · Whilton Branch R.NENE
Current status unknown
Daventry-SSO(3)
Anglian Water · Feeder stream Daventry Reservo
Current status unknown

Questions about Norton STW (Northants)

Who operates Norton STW (Northants)?: Anglian Water is the operator named in the annual record. The permit reference is AW5NF247.
Where does Norton STW (Northants) discharge?: The source names Norton Brook Grand Union Canal as the receiving water. This does not show how far a discharge travelled.
How many times did Norton STW (Northants) spill in 2025?: The 2025 return records 15 counted spill events and 13.8 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 Norton STW (Northants) 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 Norton STW (Northants)?: 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 Norton STW (Northants) compare with other overflows?: Norton STW (Northants) recorded 15 spills in 2025. That is more than 56% of the 14,239 overflows in England with a reported figure, and ranks 5,981st nationally. Among Anglian Water overflows it ranks 362nd of 1,438; the median Anglian Water overflow recorded 6 spills. 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.