Sewage Map

Solent sewage map and spill data

43 storm overflows listed in the 2025 annual return name this water. All are operated by Southern Water. Check the latest company report for each outlet below.

43
Outlet records
880
Spills in 2025
4,919
Recorded hours
40
Linked to a live feed

4 records show monitor operation below 90%. Annual figures describe the whole of 2025, not today.

Official waterbody record ↗How spills are countedSearch the national map

Outlets on Solent

Filter by the latest company report. The map follows the filters.

Filters apply to the map and list. Recent stops need a current report and a recorded stop time. They do not show whether water is safe.

Showing 10 of 43 outlets

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Most recorded spills in 2025

The highest 2025 counts among these outlets. A count is events, not volume or harm. Equal counts share a rank.

  1. 1
    Henderson Road Eastney CSO - 111912

    Southern Water

    86spills
  2. 2
    Woodvale Transfer CSO - 115966

    Southern Water

    70spills
  3. 3
    Milford Road Pennington SSO - 115419

    Southern Water

    66spills
  4. 4
    High Street Cowes CEO - 108528

    Southern Water

    61spills
  5. 5
    Springhill Cowes Transfer CEO - 108943

    Southern Water

    60spills

Spills over time

The median outlet on Solent recorded 9 spills in 2025, against 11 across England.

38 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 6 recorded more spills, 26 fewer and 6 the same. Together they went from 1,283 to 831 spills, a fall of 35%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202543880911
2024431,3851219
2023351,3172120
2022338011313
20213487210.519

Earlier returns list fewer of these outlets, so totals are not comparable between years. The median per outlet and the like-for-like change are fairer comparisons. Counts are events, not volume.

All outlet records on Solent

43 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.

A2 outlets
B1 outlet
C1 outlet
E3 outlets
F2 outlets
G1 outlet
H2 outlets
L3 outlets
M7 outlets
N2 outlets
P2 outlets
Q1 outlet
S9 outlets
T4 outlets
W3 outlets

Sources and dates

Outlet locations, waterbody links and spill figures come from the Environment Agency 2025 event duration monitoring annual return. The latest company reports come from each operator’s live feed and carry their own dates. Waterbody ID: GB650705150000. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Solent

Which outlets are linked to Solent?
The source links 43 outlet records to waterbody GB650705150000. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Solent?
43 records report 880 spills in 2025 and 4,919 recorded hours. All listed records have a usable count. Outlets can discharge at the same time, so the hours are not the time the whole water was affected.
Who is responsible for the outlets on Solent?
Southern Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Solent are linked to a live feed?
40 of the 43 records are matched to a monitor in a company live feed. A link does not mean the monitor is working now. Use the status filters above to see the latest report for each outlet, with its date. The rest show annual figures only.
How complete is the monitoring for Solent?
4 of the listed records have monitor operation below 90% for 2025. Events can be missed when a monitor is not working, so low counts from those outlets may understate activity.
Does this show if Solent is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.