Ocklye Crowborough CSO - 111367
Storm overflow operated by Southern Water. The source names The Herons Ghyll as the receiving water.
- 28
- Spills in 2025
- 126
- Recorded hours
- 100%
- Monitor operation
- 5
- Years listed
The reported spill count was 1 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Ocklye Crowborough CSO - 111367 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 Southern Water overflows it ranks 205th of 975; the median Southern Water overflow recorded 7 spills.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 28 | 126 |
| England | 3,771st of 14,239 | 11 | 22.3 |
| Southern Water | 205th of 975 | 7 | 17 |
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 | 126 hours | 100% | Official data |
| 2024 | 29 | 175.3 hours | 99.8% | Official data |
| 2023 | 37 | 179 hours | 99.5% | Official data |
| 2022 | 35 | 173 hours | 99.9% | Official data |
| 2021 | 31 | 95.7 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
- Storm overflow on the sewer network
- Permit
- W00567
- Activity reference
- Storm
- Grid reference
- TQ5006031300
- Waterbody ID
- GB106040018370Official 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 1.9 km north-west of the Crowborough 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
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- Alderbrook Way Crowborough CSO - 103288Current status unknown
Southern Water · Jarvis Brook
- Alderbrook Way Crowborough No 2 CSO - 116052Current status unknown
Southern Water · Jarvis Brook
Questions about Ocklye Crowborough CSO - 111367
- Who operates Ocklye Crowborough CSO - 111367?
- Southern Water is the operator named in the annual record. The permit reference is W00567.
- Where does Ocklye Crowborough CSO - 111367 discharge?
- The source names The Herons Ghyll as the receiving water. This does not show how far a discharge travelled.
- How many times did Ocklye Crowborough CSO - 111367 spill in 2025?
- The 2025 return records 28 counted spill events and 126 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 Ocklye Crowborough CSO - 111367 discharging right now?
- This record is linked to a company live feed. The panel above shows the latest report we hold, with its date. That report can be old, and the monitor can be offline, so check the date before relying on it. A report that no discharge is taking place is not a water-quality result.
- 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 Ocklye Crowborough CSO - 111367?
- 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 Ocklye Crowborough CSO - 111367 compare with other overflows?
- Ocklye Crowborough CSO - 111367 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 Southern Water overflows it ranks 205th of 975; the median Southern Water overflow recorded 7 spills. 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.