Sewage Map

Langstone Harbour sewage map and spill data

7 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.

7
Outlet records
50
Spills in 2025
147
Recorded hours
6
Linked to a live feed

Annual figures describe the whole of 2025, not today.

Official waterbody record ↗How spills are countedSearch the national map

Outlets on Langstone Harbour

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 7 of 7 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
    Court Lane Cosham SSO - 115958

    Southern Water

    22spills
  2. 2
    Mainland Drayton SSO - 115960

    Southern Water

    11spills
  3. 3
    Fort Cumberland Road Eastney SSO - 110658

    Southern Water

    9spills
  4. 4
    Budds Farm Havant Se7 CEO - 116073

    Southern Water

    3spills
  5. 4
    St Andrews Road Portsmouth CSO - 108474

    Southern Water

    3spills

Spills over time

The median outlet on Langstone Harbour recorded 3 spills in 2025, against 11 across England.

7 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 5 fewer and 1 the same. Together they went from 63 to 50 spills, a fall of 21%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
2025750311
2024763619
202368213.520
20226721213
2021538619

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 Langstone Harbour

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

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: GB580705130000. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Langstone Harbour

Which outlets are linked to Langstone Harbour?
The source links 7 outlet records to waterbody GB580705130000. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Langstone Harbour?
7 records report 50 spills in 2025 and 147 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 Langstone Harbour?
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 Langstone Harbour are linked to a live feed?
6 of the 7 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 Langstone Harbour?
Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Langstone Harbour is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.