KNOWLE - THE SQUARE - Combined Sewer Overflow
Storm overflow operated by Wessex Water. The source names Brislington Brook as the receiving water.
- 0
- Spills in 2025
- 0
- Recorded hours
- 100%
- Monitor operation
- 1
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
KNOWLE - THE SQUARE - Combined Sewer Overflow recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 0 | 0 |
| England | 12,009th of 14,239 | 11 | 22.3 |
| Wessex Water | 1,113th of 1,332 | 11 | 18.9 |
| Brislington Bk - source to conf R Avon (Brist) | 10th of 21 | 0 | 0 |
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
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | 0 | 0 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
- Unpermitted
- Activity reference
- Unknown
- Grid reference
- ST6027369894 ST6044569890
- Waterbody ID
- GB109053021980Official waterbody record ↗
- Location source
- Official annual grid reference
- Location precision
- About 1 metres
- Location note
- The source cell states 2 grid references. This marker uses the first stated reference.
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 2.4 km north-west of the Whitchurch (Bath and North East Somerset) reference point in the ONS built-up areas data.
Area and water pages
- Bristol area →
- Filton area →
- Kingswood and Fishponds area →
- Stoke Gifford area →
- Hambrook (South Gloucestershire) area →
- Bitton area →
- Leigh Woods area →
- Abbots Leigh area →
- Keynsham area →
- Upton Cheyney area →
- Long Ashton area →
- Whitchurch (Bath and North East Somerset) area →
- Saltford area →
- Failand area →
- Pill area →
- Cambridge Batch area →
- Dundry area →
- Barrow Gurney area →
- Brislington Bk - source 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
- Bristol Crossways Road Garden R/O No 114Current status unknown
Wessex Water · Tributary of Brislington Brook SWS
- Bristol Somerdale Avenue / Salcombe RoadCurrent status unknown
Wessex Water · Brislington Brook via SWS
- Bristol Somerdale Avenue / Spring GardensCurrent status unknown
Wessex Water · Brislington Brook via SWS
- Bristol Petherton Road Paint FactoryCurrent status unknown
Wessex Water · Brislington Brook, via SWS
Questions about KNOWLE - THE SQUARE - Combined Sewer Overflow
- Who operates KNOWLE - THE SQUARE - Combined Sewer Overflow?
- Wessex Water is the operator named in the annual record. The permit reference is Unpermitted.
- Where does KNOWLE - THE SQUARE - Combined Sewer Overflow discharge?
- The source names Brislington Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did KNOWLE - THE SQUARE - Combined Sewer Overflow spill in 2025?
- The 2025 return records 0 counted spill events and 0 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 KNOWLE - THE SQUARE - Combined Sewer Overflow discharging right now?
- This record is not matched to a company live feed, so we cannot show a current report. Only the annual figures are available for this outlet.
- 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 KNOWLE - THE SQUARE - Combined Sewer Overflow?
- 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 KNOWLE - THE SQUARE - Combined Sewer Overflow compare with other overflows?
- KNOWLE - THE SQUARE - Combined Sewer Overflow recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. 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.