Great Hinton

Storm overflow operated by Wessex Water. The source names Tributary of Semington Brook as the receiving water.

6
Spills in 2025: 48.1
Recorded hours: 100%
Monitor operation: 4
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

Great Hinton recorded 6 spills in 2025. That is more than 37% of the 14,239 overflows in England with a reported figure, and ranks 8,498th nationally. Among Wessex Water overflows it ranks 809th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Semington Bk-Milebourne Str to conf R Avon (Brist) waterbody it ranks 2nd of 3.

Group	Rank by spills	Median spills	Median hours
This outlet	–	6	48.1
England	8,498th of 14,239	11	22.3
Wessex Water	809th of 1,332	11	18.9
Semington Bk-Milebourne Str to conf R Avon (Brist)	2nd of 3	6	48.1

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 2022 to 2025, the reported count went from 3 to 6 spills. The highest count was 26 in 2024 and the lowest was 3 in 2022. The monitor worked for less than 90% of 2022, 2023, so those counts 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	6	48.1 hours	100%	Official data
2024	26	236.2 hours	94%	Official data
2023	13	84.7 hours	57.4%Low coverage	Official data
2022	3	1.7 hours	75.9%Low coverage	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: Wessex Water
Outlet type: Storm discharge at a pumping station
Permit: NPSWQD008924
Activity reference: 1-STORM/EMERGENCY
Grid reference: ST9091459220
Waterbody ID: GB109053022200Official 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 discharge at pumping station”: storm discharge at a pumping station. The overflow is at a pumping station that moves sewage through the network.

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 1.7 km south-east of the Semington reference point in the ONS built-up areas data.

Area and water pages

Semington Bk-Milebourne Str to conf R Avon (Brist) 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

Keevil The Street
Wessex Water · Tributary of Semington Brook
Current status unknown

Semington Semington Brook
Wessex Water · Semington Brook (S)
Current status unknown
Bowerhill Shails Lane Inlet
Wessex Water · Berryfield Stream(S)
Current status unknown
Bowerhill Shails Lane Storm Tank
Wessex Water · Berryfield Stream(S)
Current status unknown

Questions about Great Hinton

Who operates Great Hinton?: Wessex Water is the operator named in the annual record. The permit reference is NPSWQD008924.
Where does Great Hinton discharge?: The source names Tributary of Semington Brook as the receiving water. This does not show how far a discharge travelled.
How many times did Great Hinton spill in 2025?: The 2025 return records 6 counted spill events and 48.1 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 100% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Great Hinton 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 Great Hinton?: The annual return lists the asset type as “Storm discharge at pumping station”, which means storm discharge at a pumping station. The overflow is at a pumping station that moves sewage through the network.
How does Great Hinton compare with other overflows?: Great Hinton recorded 6 spills in 2025. That is more than 37% of the 14,239 overflows in England with a reported figure, and ranks 8,498th nationally. Among Wessex Water overflows it ranks 809th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Semington Bk-Milebourne Str to conf R Avon (Brist) waterbody it ranks 2nd of 3. 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.