Sewage Map

Poole Harbour sewage map and spill data

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

16
Outlet records
75
Spills in 2025
374
Recorded hours
15
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 Poole 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 10 of 16 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
    Upton Moorlands Way

    Wessex Water

    17spills
  2. 2
    Lytchett Minster Lytchett Bay Storm Tank

    Wessex Water

    13spills
  3. 3
    Poole Cabot Lane Storm Tank

    Wessex Water

    12spills
  4. 4
    Poole Woodlands Ave/Hinchliffe Road O/F

    Wessex Water

    8spills
  5. 5
    Wareham Keysworth Drive Storm Tank

    Wessex Water

    7spills

Spills over time

The median outlet on Poole Harbour recorded 2.5 spills in 2025, against 11 across England.

14 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 2 recorded more spills, 9 fewer and 3 the same. Together they went from 148 to 74 spills, a fall of 50%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202516752.511
202415148519
202313148820
20221385313
2021437819
20203722318

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 Poole Harbour

16 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: GB520804415800. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Poole Harbour

Which outlets are linked to Poole Harbour?
The source links 16 outlet records to waterbody GB520804415800. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Poole Harbour?
16 records report 75 spills in 2025 and 374 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 Poole Harbour?
Wessex Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Poole Harbour are linked to a live feed?
15 of the 16 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 Poole Harbour?
Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Poole 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.