Sewage Map

Portland Harbour sewage map and spill data

4 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.

4
Outlet records
19
Spills in 2025
6
Recorded hours
4
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 Portland 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 4 of 4 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
    Wyke Regis Doncaster Road

    Wessex Water

    11spills
  2. 2
    Portland Victoria Square

    Wessex Water

    5spills
  3. 3
    Weymouth Castle Cove Old Castle Road Wyke Regis

    Wessex Water

    2spills
  4. 4
    Wyke Regis Hillcrest Road

    Wessex Water

    1spills

Spills over time

The median outlet on Portland Harbour recorded 3.5 spills in 2025, against 11 across England.

4 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 2 fewer and 1 the same. Together they went from 27 to 19 spills, a fall of 30%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20254193.511
2024427719
20233281120
2022313613

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 Portland Harbour

4 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: GB680805270000. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Portland Harbour

Which outlets are linked to Portland Harbour?
The source links 4 outlet records to waterbody GB680805270000. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Portland Harbour?
4 records report 19 spills in 2025 and 6 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 Portland 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 Portland Harbour are linked to a live feed?
4 of the 4 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 Portland Harbour?
Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Portland 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.