Lenham SSO - 115820
Storm overflow operated by Southern Water. The source names Tributary of the Great Stour as the receiving water.
- 0
- Spills in 2025
- 0
- Recorded hours
- 48.6%
- Monitor operation
- 5
- Years listed
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Lenham SSO - 115820 recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.
The monitor worked for 48.6% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 0 | 0 |
| England | 12,009th of 14,239 | 11 | 22.3 |
| Southern Water | 801st of 975 | 7 | 17 |
| Upper Great Stour | 5th of 7 | 8 | 11.7 |
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 | 0 | 0 hours | 48.6%Low coverage | Official data |
| 2024 | 1 | 9.3 hours | 76.6%Low coverage | Official data |
| 2023 | 2 | 8.2 hours | 100% | Official data |
| 2022 | 0 | 0 hours | 100% | Official data |
| 2021 | 12 | 110.3 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 tank at a wastewater treatment works
- Permit
- W00517
- Activity reference
- Settled Storm
- Grid reference
- TQ9048050880
- Waterbody ID
- GB107040019660Official 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 “Storm tank at WwTW”: storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
The source name includes SSO, which Southern Water defines as Settled Storm Overflow. The name and the listed type are separate source fields, so the name does not describe the layout of the site. Southern Water flow and spill reporting glossary ↗
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 2.4 km south-east of the Lenham and Harrietsham 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
- Harrietsham SSO - 115874Current status unknown
Southern Water · The River Len
- Dog Kennel Lane Charing CSO - 108629Current status unknown
Southern Water · Freshwater River
- Charing SSO - 115769Current status unknown
Southern Water · The Great Stour
- Ulcombe SSO - 115825Current status unknown
Southern Water · Tributary of the River Beult
Questions about Lenham SSO - 115820
- Who operates Lenham SSO - 115820?
- Southern Water is the operator named in the annual record. The permit reference is W00517.
- Where does Lenham SSO - 115820 discharge?
- The source names Tributary of the Great Stour as the receiving water. This does not show how far a discharge travelled.
- How many times did Lenham SSO - 115820 spill in 2025?
- The 2025 return records 0 counted spill events and 0 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 48.6% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Lenham SSO - 115820 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 Lenham SSO - 115820?
- The annual return lists the asset type as “Storm tank at WwTW”, which means storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works. The source name includes SSO, which Southern Water defines as Settled Storm Overflow. The name and the listed type are separate source fields.
- How does Lenham SSO - 115820 compare with other overflows?
- Lenham SSO - 115820 recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. 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.