Sewage Map

Great Ouse sewage map and spill data

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

11
Outlet records
175
Spills in 2025
498
Recorded hours
10
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 Great Ouse

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 11 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
    Kings Lynn-Nar Lane Sp

    Anglian Water

    75spills
  2. 2
    Kings Lynn Austin Fields PS

    Anglian Water

    39spills
  3. 3
    King's Lynn Purfleet Quay Pumping Station

    Anglian Water

    25spills
  4. 4
    Kings Lynn Gaywood Combined Sewer Overflow

    Anglian Water

    14spills
  5. 5
    Kings Lynn - Gaywood Outfall 2 Combined Sewer Overflow

    Anglian Water

    13spills

Spills over time

The median outlet on Great Ouse recorded 3 spills in 2025, against 11 across England.

10 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 6 fewer and 3 the same. Together they went from 174 to 136 spills, a fall of 22%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202511175311
2024101741219
20239240820
2022819315.513
2021820712.519

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 Great Ouse

11 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: GB530503300300. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Great Ouse

Which outlets are linked to Great Ouse?
The source links 11 outlet records to waterbody GB530503300300. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Great Ouse?
11 records report 175 spills in 2025 and 498 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 Great Ouse?
Anglian Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Great Ouse are linked to a live feed?
10 of the 11 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 Great Ouse?
Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Great Ouse is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.