Sewage Map

Bristol Avon sewage map and spill data

70 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.

70
Outlet records
1,193
Spills in 2025
3,006
Recorded hours
68
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 Bristol Avon

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 70 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
    Portbury Wharf The Drove Portbury Inlet

    Wessex Water

    83spills
  2. 2
    Avonmouth Kingsweston Lane Storm Tank

    Wessex Water

    67spills
  3. 3
    Bristol Portway Under Avon Bridge

    Wessex Water

    55spills
  4. 4
    Bristol Cranbrook Road O/S No 2

    Wessex Water

    48spills
  5. 5
    Bristol Cotham Brow O/S No 137

    Wessex Water

    47spills

Spills over time

The median outlet on Bristol Avon recorded 12 spills in 2025, against 11 across England.

61 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 55 fewer and 5 the same. Together they went from 1,850 to 1,167 spills, a fall of 37%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
2025701,1931211
2024681,95224.519
2023682,06622.520
2022651,2071313
202121005019
202021346718

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 Bristol Avon

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

A2 outlets
B58 outlets
C5 outlets
P5 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: GB530905415405. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Bristol Avon

Which outlets are linked to Bristol Avon?
The source links 70 outlet records to waterbody GB530905415405. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Bristol Avon?
70 records report 1,193 spills in 2025 and 3,006 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 Bristol Avon?
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 Bristol Avon are linked to a live feed?
68 of the 70 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 Bristol Avon?
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 Bristol Avon is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.