Bishops Castle - Union Street (CSO)
Storm overflow operated by Severn Trent Water. The source names Tributary of River Kemp as the receiving water.
- Unknown
- Spills in 2025
- Unknown
- Recorded hours
- Unknown
- Monitor operation
- 5
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
Annual spill history
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | Unknown | Unknown | Unknown | Official data |
| 2024 | 34 | 375.7 hours | 20.3%Low coverage | Official data |
| 2022 | 71 | 280.9 hours | 72.9%Low coverage | Official data |
| 2021 | 122 | 566.4 hours | 99.6% | Official data |
| 2020 | 70 | 362.6 hours | 86.1%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
- Severn Trent Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- S/09/21721/O
- Activity reference
- A1
- Grid reference
- SO3257288462
- Waterbody ID
- GB109054044061Official 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 0.3 km south-east of the Bishop's Castle 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
- Lydbury North STW (CSO&Eo)Current status unknown
Severn Trent Water · Tributary of River Kemp
- Church Stretton (STW)Current status unknown
Severn Trent Water · Tributary of Quinny Brook
- Church Stretton STW (SSTO)Current status unknown
Severn Trent Water · Tributary of Quinny Brook
- Craven Arms - Old School (CSO)Current status unknown
Severn Trent Water · River Onny
Questions about Bishops Castle - Union Street (CSO)
- Who operates Bishops Castle - Union Street (CSO)?
- Severn Trent Water is the operator named in the annual record. The permit reference is S/09/21721/O.
- Where does Bishops Castle - Union Street (CSO) discharge?
- The source names Tributary of River Kemp as the receiving water. This does not show how far a discharge travelled.
- How many times did Bishops Castle - Union Street (CSO) spill in 2025?
- The 2025 return has no usable spill count for this outlet. Missing is not the same as zero.
- Can I trust the 2025 figures for this outlet?
- The return gives no monitor operation figure, so we cannot say how much of the year was monitored. Treat the annual figures with care.
- Is Bishops Castle - Union Street (CSO) 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 Bishops Castle - Union Street (CSO)?
- 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.
- 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.