Sewage Map

Hallow STW (SSTO)

Storm overflow operated by Severn Trent Water. The source names Laughern Brook as the receiving water.

33
Spills in 2025
259.5
Recorded hours
100%
Monitor operation
6
Years listed
Current status unknown

Checking the latest monitor report…

Open official annual data ↗

How it compares in 2025

Hallow STW (SSTO) recorded 33 spills in 2025. That is more than 77% of the 14,239 overflows in England with a reported figure, and ranks 3,116th nationally. Among Severn Trent Water overflows it ranks 321st of 2,431; the median Severn Trent Water overflow recorded 8 spills.

GroupRank by spillsMedian spillsMedian hours
This outlet–33259.5
England3,116th of 14,2391122.3
Severn Trent Water321st of 2,431816.2

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

312020632021222022492023662024332025
From 2020 to 2025, the reported count went from 31 to 33 spills. The highest count was 66 in 2024 and the lowest was 22 in 2022. The monitor worked for less than 90% of 2022, 2024, so those counts may be low.Amber bars mark years when the monitor worked for less than 90% of the year.
YearSpillsDurationMonitor operationSource
202533259.5 hours100%Official data
202466327 hours78.4%Low coverageOfficial data
202349273.8 hours100%Official data
202222213.4 hours74.6%Low coverageOfficial data
202163904.1 hours99.6%Official data
202031362.7 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
Severn Trent Water
Outlet type
Storm tank at a wastewater treatment works
Permit
S/09/55973/R
Activity reference
A2
Grid reference
SO8247657455
Waterbody ID
GB109054044380Official 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 1.2 km south of the Hallow 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 Hallow STW (SSTO)

Who operates Hallow STW (SSTO)?
Severn Trent Water is the operator named in the annual record. The permit reference is S/09/55973/R.
Where does Hallow STW (SSTO) discharge?
The source names Laughern Brook as the receiving water. This does not show how far a discharge travelled.
How many times did Hallow STW (SSTO) spill in 2025?
The 2025 return records 33 counted spill events and 259.5 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 Hallow STW (SSTO) 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 Hallow STW (SSTO)?
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 Hallow STW (SSTO) compare with other overflows?
Hallow STW (SSTO) recorded 33 spills in 2025. That is more than 77% of the 14,239 overflows in England with a reported figure, and ranks 3,116th nationally. Among Severn Trent Water overflows it ranks 321st of 2,431; the median Severn Trent Water overflow recorded 8 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.