Bristol Henleaze Road Junction With Henleaze Park Drive

Storm overflow operated by Wessex Water. The source names Tributary of the River Trym via SWS as the receiving water.

30
Spills in 2025: 57.7
Recorded hours: 53.2%
Monitor operation: 4
Years listed

Current status unknown

Checking the latest monitor report…

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How it compares in 2025

Bristol Henleaze Road Junction With Henleaze Park Drive recorded 30 spills in 2025. That is more than 74% of the 14,239 overflows in England with a reported figure, and ranks 3,488th nationally. Among Wessex Water overflows it ranks 295th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Trym - source to conf R Avon (Brist) waterbody it ranks 7th of 31.

The monitor worked for 53.2% of 2025, so this count may be low and its rank may understate activity.

Group	Rank by spills	Median spills	Median hours
This outlet	–	30	57.7
England	3,488th of 14,239	11	22.3
Wessex Water	295th of 1,332	11	18.9
Trym - source to conf R Avon (Brist)	7th of 31	19	10.5

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 2022 to 2025, the reported count went from 51 to 30 spills. The highest count was 73 in 2023 and the lowest was 30 in 2025. The monitor worked for less than 90% of 2025, 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	30	57.7 hours	53.2%Low coverage	Official data
2024	54	103.8 hours	91.1%	Official data
2023	73	111.2 hours	99.7%	Official data
2022	51	48.4 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: Wessex Water
Outlet type: Storm overflow on the sewer network
Permit: 100459
Activity reference: 1-STORM OVERFLOW
Grid reference: ST5801877358
Waterbody ID: GB109053027530Official 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 “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer 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 3 km south-west of the Filton reference point in the ONS built-up areas data.

Designated bathing waters within 3 km in a straight line:

Henleaze Lake0.1 km

Distance does not show that water from this outlet reaches a bathing water. Check the official bathing-water profile for its classification and advice.

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.

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Other outlet records nearby

Bristol Lawrence Grove O/S No 21
Wessex Water · Tributary of River Trym via SWS
Current status unknown

Bristol Rockside Drive O/S No 2
Wessex Water · Tributary of River Trym via SW
Current status unknown
Bristol Henleaze Park Drive Junction Oakwood Road
Wessex Water · Tributary of River Trym via SWS
Current status unknown
Bristol Henleaze Road / Wanscow Walk
Wessex Water · Tributary of River Trym via SWS
Current status unknown

Questions about Bristol Henleaze Road Junction With Henleaze Park Drive

Who operates Bristol Henleaze Road Junction With Henleaze Park Drive?: Wessex Water is the operator named in the annual record. The permit reference is 100459.
Where does Bristol Henleaze Road Junction With Henleaze Park Drive discharge?: The source names Tributary of the River Trym via SWS as the receiving water. This does not show how far a discharge travelled.
How many times did Bristol Henleaze Road Junction With Henleaze Park Drive spill in 2025?: The 2025 return records 30 counted spill events and 57.7 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 53.2% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
Is Bristol Henleaze Road Junction With Henleaze Park Drive 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 Bristol Henleaze Road Junction With Henleaze Park Drive?: The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
How does Bristol Henleaze Road Junction With Henleaze Park Drive compare with other overflows?: Bristol Henleaze Road Junction With Henleaze Park Drive recorded 30 spills in 2025. That is more than 74% of the 14,239 overflows in England with a reported figure, and ranks 3,488th nationally. Among Wessex Water overflows it ranks 295th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Trym - source to conf R Avon (Brist) waterbody it ranks 7th of 31. 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.