Sewage Map

Bristol Avon (Semington Bk to By Bk) sewage map and spill data

10 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.

10
Outlet records
181
Spills in 2025
947
Recorded hours
9
Linked to a live feed

1 records have no usable spill count. 1 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 (Semington Bk to By Bk)

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 10 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
    Holt The Star

    Wessex Water

    48spills
  2. 2
    Bradford-On-Avon Market Street Junction With Church Street

    Wessex Water

    47spills
  3. 3
    Freshford Storm Tank

    Wessex Water

    32spills
  4. 4
    Bradford-On-Avon Spring Field And Woolley Street Junction

    Wessex Water

    18spills
  5. 5
    Bradford-On-Avon Storm Tank

    Wessex Water

    10spills

Spills over time

The median outlet on Bristol Avon (Semington Bk to By Bk) recorded 10 spills in 2025, against 11 across England.

8 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 0 recorded more spills, 8 fewer and 0 the same. Together they went from 385 to 173 spills, a fall of 55%.

YearOutlets with a countTotal spillsMedian per outletEngland median
202591811011
20241040933.519
2023103382520
2022101981413
2021273.519
20203441818

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 (Semington Bk to By Bk)

10 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: GB109053027372. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Bristol Avon (Semington Bk to By Bk)

Which outlets are linked to Bristol Avon (Semington Bk to By Bk)?
The source links 10 outlet records to waterbody GB109053027372. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Bristol Avon (Semington Bk to By Bk)?
9 records report 181 spills in 2025 and 947 recorded hours. 1 records have no 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 (Semington Bk to By Bk)?
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 (Semington Bk to By Bk) are linked to a live feed?
9 of the 10 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 (Semington Bk to By Bk)?
1 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 (Semington Bk to By Bk) is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.