Sewage Map

W Bergholt STW

Storm overflow operated by Anglian Water. The source names River Colne NT as the receiving water.

Unknown
Spills in 2025
Unknown
Recorded hours
0%
Monitor operation
5
Years listed
Current status unknown

Checking the latest monitor report…

Open official annual data ↗

Annual spill history

35202162022312023372024n/a2025
From 2021 to 2024, the reported count went from 35 to 37 spills. The highest count was 37 in 2024 and the lowest was 6 in 2022. 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
2025UnknownUnknown0%Low coverageOfficial data
202437697.7 hours87.1%Low coverageOfficial data
202331559.2 hours99.8%Official data
2022660.3 hours99.7%Official data
202135326.5 hours100%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
AW2NF335
Activity reference
A2
Grid reference
TL9596026570
Waterbody ID
GB105037041330Official 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 1.1 km south of the West Bergholt 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 W Bergholt STW

Who operates W Bergholt STW?
Anglian Water is the operator named in the annual record. The permit reference is AW2NF335.
Where does W Bergholt STW discharge?
The source names River Colne NT as the receiving water. This does not show how far a discharge travelled.
How many times did W Bergholt STW spill in 2025?
The 2025 return has no usable spill count for this outlet. Missing is not the same as zero.
Can I trust the 2025 figures for this outlet?
The monitor worked for 0% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
Is W Bergholt STW 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 W Bergholt STW?
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.
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.