Wyebank Road CSO, Chepstow
Storm overflow operated by Dŵr Cymru Welsh Water. The source names River Wye as the receiving water.
- 28
- Spills in 2025
- 29.5
- Recorded hours
- 78.9%
- Monitor operation
- 2
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Wyebank Road CSO, Chepstow recorded 28 spills in 2025. That is more than 72% of the 14,239 overflows in England with a reported figure, and ranks 3,771st nationally. Among Dŵr Cymru Welsh Water overflows it ranks 39th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 spills. On the Wye waterbody it ranks 3rd of 3.
The monitor worked for 78.9% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 28 | 29.5 |
| England | 3,771st of 14,239 | 11 | 22.3 |
| Dŵr Cymru Welsh Water | 39th of 122 | 14.5 | 29.3 |
| Wye | 3rd of 3 | 59 | 332.3 |
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 | 28 | 29.5 hours | 78.9%Low coverage | Official data |
| 2024 | 32 | 25.5 hours | 99.1% | 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
- Dŵr Cymru Welsh Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- AN0035401
- Activity reference
- 1
- Grid reference
- ST5406093701
- Waterbody ID
- GB530905415406Official 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 0.8 km south of the Tutshill and Sedbury 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
- SedburyCurrent status unknown
Dŵr Cymru Welsh Water · River Wye
- St Briavels WwTWCurrent status unknown
Dŵr Cymru Welsh Water · Wye Estuary
- Newland (Nr Coleford)Current status unknown
Dŵr Cymru Welsh Water · Valley Brook
- Newland (Nr Coleford)Current status unknown
Dŵr Cymru Welsh Water · Valley Brook
Questions about Wyebank Road CSO, Chepstow
- Who operates Wyebank Road CSO, Chepstow?
- Dŵr Cymru Welsh Water is the operator named in the annual record. The permit reference is AN0035401.
- Where does Wyebank Road CSO, Chepstow discharge?
- The source names River Wye as the receiving water. This does not show how far a discharge travelled.
- How many times did Wyebank Road CSO, Chepstow spill in 2025?
- The 2025 return records 28 counted spill events and 29.5 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 78.9% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Wyebank Road CSO, Chepstow 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 Wyebank Road CSO, Chepstow?
- 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 Wyebank Road CSO, Chepstow compare with other overflows?
- Wyebank Road CSO, Chepstow recorded 28 spills in 2025. That is more than 72% of the 14,239 overflows in England with a reported figure, and ranks 3,771st nationally. Among Dŵr Cymru Welsh Water overflows it ranks 39th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 spills. On the Wye waterbody it ranks 3rd 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.