Sewage Map

Darwen - headwaters to conf Davy Field Bk sewage map and spill data

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

26
Outlet records
512
Spills in 2025
761
Recorded hours
26
Linked to a live feed

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 Darwen - headwaters to conf Davy Field 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 26 outlets

Open full map
  • 28 Tythebarn Street CSO

    United Utilities · River Darwen (Sewer)

    Current status unknown
    2025 annual record:20spills15.5hours
  • Anyon Street / Laurel Avenue CSO

    United Utilities · Tributary of River Darwen

    Current status unknown
    2025 annual record:63spills107hours
  • Balle Street / Hilton Street CSO

    United Utilities · River Darwen

    Current status unknown
    2025 annual record:46spills27.7hours
  • Balle Street CSO No.X

    United Utilities · River Darwen

    Current status unknown
    2025 annual record:56spills61.8hours
  • Belgrave Road CSO

    United Utilities · Tributary of River Darwen

    Current status unknown
    2025 annual record:0spills0hours
  • Bolton Road CSO

    United Utilities · Unnamed Tributary of River Darwen

    Current status unknown
    2025 annual record:45spills45.7hours
  • Bolton Road CSO

    United Utilities · Unnamed Tributary of River Darwen

    Current status unknown
    2025 annual record:5spills1.4hours
  • Bolton Road CSO

    United Utilities · Tributary of River Darwen

    Current status unknown
    2025 annual record:0spills0hours
  • Bolton Road/ Astley Street CSO

    United Utilities · Kebbs Brook,TRIB of Riv Darwen

    Current status unknown
    2025 annual record:9spills3.5hours
  • Church Street / Parliament Streeet CSO

    United Utilities · Culverted Section River Darwen

    Current status unknown
    2025 annual record:7spills1.7hours

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
    Higher Perry Street/Back Laurel CSO

    United Utilities

    68spills
  2. 2
    Anyon Street / Laurel Avenue CSO

    United Utilities

    63spills
  3. 3
    Balle Street CSO No.X

    United Utilities

    56spills
  4. 4
    Balle Street / Hilton Street CSO

    United Utilities

    46spills
  5. 5
    Bolton Road CSO

    United Utilities

    45spills

Spills over time

The median outlet on Darwen - headwaters to conf Davy Field Bk recorded 8 spills in 2025, against 11 across England.

25 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 7 recorded more spills, 13 fewer and 5 the same. Together they went from 517 to 512 spills, a fall of 1%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202526512811
20242651712.519

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 Darwen - headwaters to conf Davy Field Bk

26 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: GB112071065240. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Darwen - headwaters to conf Davy Field Bk

Which outlets are linked to Darwen - headwaters to conf Davy Field Bk?
The source links 26 outlet records to waterbody GB112071065240. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Darwen - headwaters to conf Davy Field Bk?
26 records report 512 spills in 2025 and 761 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 Darwen - headwaters to conf Davy Field Bk?
United Utilities operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Darwen - headwaters to conf Davy Field Bk are linked to a live feed?
26 of the 26 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 Darwen - headwaters to conf Davy Field 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 Darwen - headwaters to conf Davy Field 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.