Sewage Map

Monkton Combe Mill Lane

Storm overflow operated by Wessex Water. The source names Midford Brook (via SWS) as the receiving water.

49
Spills in 2025
45.6
Recorded hours
95.4%
Monitor operation
4
Years listed

The reported spill count was 12 lower than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

Open official annual data ↗

How it compares in 2025

Monkton Combe Mill Lane recorded 49 spills in 2025. That is more than 87% of the 14,239 overflows in England with a reported figure, and ranks 1,699th nationally. Among Wessex Water overflows it ranks 118th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Wellow Bk - Snails Bk to Bristol Avon waterbody it ranks 1st of 16.

GroupRank by spillsMedian spillsMedian hours
This outlet–4945.6
England1,699th of 14,2391122.3
Wessex Water118th of 1,3321118.9
Wellow Bk - Snails Bk to Bristol Avon1st of 1669.1

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

372022602023612024492025
From 2022 to 2025, the reported count went from 37 to 49 spills. The highest count was 61 in 2024 and the lowest was 37 in 2022.
YearSpillsDurationMonitor operationSource
20254945.6 hours95.4%Official data
202461105.7 hours99.6%Official data
20236077.8 hours100%Official data
20223746 hours99.9%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
021680
Activity reference
1-STORM OVERFLOW
Grid reference
ST7725661731
Waterbody ID
GB109053022271Official 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 0.2 km south-west of the Monkton Combe 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 Monkton Combe Mill Lane

Who operates Monkton Combe Mill Lane?
Wessex Water is the operator named in the annual record. The permit reference is 021680.
Where does Monkton Combe Mill Lane discharge?
The source names Midford Brook (via SWS) as the receiving water. This does not show how far a discharge travelled.
How many times did Monkton Combe Mill Lane spill in 2025?
The 2025 return records 49 counted spill events and 45.6 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 95.4% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Monkton Combe Mill Lane 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 Monkton Combe Mill Lane?
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 Monkton Combe Mill Lane compare with other overflows?
Monkton Combe Mill Lane recorded 49 spills in 2025. That is more than 87% of the 14,239 overflows in England with a reported figure, and ranks 1,699th nationally. Among Wessex Water overflows it ranks 118th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Wellow Bk - Snails Bk to Bristol Avon waterbody it ranks 1st of 16. 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.