Chester Castle Drive
Storm overflow operated by Dŵr Cymru Welsh Water. The source names River Dee as the receiving water.
- 4
- Spills in 2025
- 1.8
- Recorded hours
- 97%
- Monitor operation
- 2
- Years listed
The reported spill count was 23 lower than in 2024. This compares event counts, not discharge volume.
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Chester Castle Drive recorded 4 spills in 2025. That is more than 30% of the 14,239 overflows in England with a reported figure, and ranks 9,334th nationally. Among Dŵr Cymru Welsh Water overflows it ranks 90th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 spills. On the Dee (N. Wales) waterbody it ranks 15th of 24.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 4 | 1.8 |
| England | 9,334th of 14,239 | 11 | 22.3 |
| Dŵr Cymru Welsh Water | 90th of 122 | 14.5 | 29.3 |
| Dee (N. Wales) | 15th of 24 | 9 | 14.1 |
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
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | 4 | 1.8 hours | 97% | Official data |
| 2024 | 27 | 15.8 hours | 97.7% | 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
- Unpermitted
- Activity reference
- Unpermitted
- Grid reference
- SJ4064065780
- Waterbody ID
- GB531106708200Official 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 3.7 km west of the Littleton (Cheshire West and Chester) reference point in the ONS built-up areas data.
Designated bathing waters within 3 km in a straight line:
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.
Open official source ↗Other outlet records nearby
- Chester Hydro Dee BridgeCurrent status unknown
Dŵr Cymru Welsh Water · River Dee
- Chester Edgars ParkCurrent status unknown
Dŵr Cymru Welsh Water · River Dee
- Mill Street, ChesterCurrent status unknown
Dŵr Cymru Welsh Water · River Dee
- Chester Boughton Sandy Lane Car ParkCurrent status unknown
Dŵr Cymru Welsh Water · River Dee
Questions about Chester Castle Drive
- Who operates Chester Castle Drive?
- Dŵr Cymru Welsh Water is the operator named in the annual record. The permit reference is Unpermitted.
- Where does Chester Castle Drive discharge?
- The source names River Dee as the receiving water. This does not show how far a discharge travelled.
- How many times did Chester Castle Drive spill in 2025?
- The 2025 return records 4 counted spill events and 1.8 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 97% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Chester Castle Drive 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 Chester Castle 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 Chester Castle Drive compare with other overflows?
- Chester Castle Drive recorded 4 spills in 2025. That is more than 30% of the 14,239 overflows in England with a reported figure, and ranks 9,334th nationally. Among Dŵr Cymru Welsh Water overflows it ranks 90th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 spills. On the Dee (N. Wales) waterbody it ranks 15th of 24. 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.