Sewage Map

Folkestone Road Dover CSO - 100263

Storm overflow operated by Southern Water. The source names Freshwater River as the receiving water.

6
Spills in 2025
9.5
Recorded hours
100%
Monitor operation
5
Years listed

The reported spill count was 6 higher than in 2024. This compares event counts, not discharge volume.

Current status unknown

We do not have a live report for this outlet. Its annual spill records are shown below.

Open official annual data ↗

How it compares in 2025

Folkestone Road Dover CSO - 100263 recorded 6 spills in 2025. That is more than 37% of the 14,239 overflows in England with a reported figure, and ranks 8,498th nationally. Among Southern Water overflows it ranks 509th of 975; the median Southern Water overflow recorded 7 spills. On the Dour from Kearsney to Dover waterbody it ranks 2nd of 5.

GroupRank by spillsMedian spillsMedian hours
This outlet–69.5
England8,498th of 14,2391122.3
Southern Water509th of 975717
Dour from Kearsney to Dover2nd of 522.6

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

0202102022020230202462025
From 2021 to 2025, the reported count went from 0 to 6 spills. The highest count was 6 in 2025 and the lowest was 0 in 2021.
YearSpillsDurationMonitor operationSource
202569.5 hours100%Official data
202400 hours100%Official data
202300 hours100%Official data
202200 hours100%Official data
202100 hours100%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
A00718
Activity reference
Storm
Grid reference
TR3052041190
Waterbody ID
GB107040073310Official 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 0.9 km south-west of the Dover 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

Questions about Folkestone Road Dover CSO - 100263

Who operates Folkestone Road Dover CSO - 100263?
Southern Water is the operator named in the annual record. The permit reference is A00718.
Where does Folkestone Road Dover CSO - 100263 discharge?
The source names Freshwater River as the receiving water. This does not show how far a discharge travelled.
How many times did Folkestone Road Dover CSO - 100263 spill in 2025?
The 2025 return records 6 counted spill events and 9.5 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 100% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Folkestone Road Dover CSO - 100263 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 Folkestone Road Dover CSO - 100263?
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 Folkestone Road Dover CSO - 100263 compare with other overflows?
Folkestone Road Dover CSO - 100263 recorded 6 spills in 2025. That is more than 37% of the 14,239 overflows in England with a reported figure, and ranks 8,498th nationally. Among Southern Water overflows it ranks 509th of 975; the median Southern Water overflow recorded 7 spills. On the Dour from Kearsney to Dover waterbody it ranks 2nd of 5. 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.