Eastbourne CSO - 115457
Storm overflow operated by Southern Water. The source names The English Channel as the receiving water.
- 54
- Spills in 2025
- 228.8
- Recorded hours
- 100%
- Monitor operation
- 2
- Years listed
The reported spill count was 31 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
Eastbourne CSO - 115457 recorded 54 spills in 2025. That is more than 89% of the 14,239 overflows in England with a reported figure, and ranks 1,394th nationally. Among Southern Water overflows it ranks 56th of 975; the median Southern Water overflow recorded 7 spills. On the Sussex East waterbody it ranks 2nd of 15.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 54 | 228.8 |
| England | 1,394th of 14,239 | 11 | 22.3 |
| Southern Water | 56th of 975 | 7 | 17 |
| Sussex East | 2nd of 15 | 5 | 9.1 |
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 | 54 | 228.8 hours | 100% | Official data |
| 2024 | 85 | 609.1 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
- Southern Water
- Outlet type
- Inlet storm overflow at a wastewater treatment works
- Permit
- A01106
- Activity reference
- Storm
- Grid reference
- TQ6430000900
- Waterbody ID
- GB640704540002Official 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 “Inlet SO at WwTW”: inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
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 1.4 km south of the Crumbles 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.
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Questions about Eastbourne CSO - 115457
- Who operates Eastbourne CSO - 115457?
- Southern Water is the operator named in the annual record. The permit reference is A01106.
- Where does Eastbourne CSO - 115457 discharge?
- The source names The English Channel as the receiving water. This does not show how far a discharge travelled.
- How many times did Eastbourne CSO - 115457 spill in 2025?
- The 2025 return records 54 counted spill events and 228.8 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 100% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Eastbourne CSO - 115457 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 Eastbourne CSO - 115457?
- The annual return lists the asset type as “Inlet SO at WwTW”, which means inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
- How does Eastbourne CSO - 115457 compare with other overflows?
- Eastbourne CSO - 115457 recorded 54 spills in 2025. That is more than 89% of the 14,239 overflows in England with a reported figure, and ranks 1,394th nationally. Among Southern Water overflows it ranks 56th of 975; the median Southern Water overflow recorded 7 spills. On the Sussex East waterbody it ranks 2nd of 15. 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.