Sewage Map

Irwell (Cowpe Bk to Rossendale STW) sewage map and spill data

9 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.

9
Outlet records
315
Spills in 2025
2,042
Recorded hours
9
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 Irwell (Cowpe Bk to Rossendale STW)

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 9 of 9 outlets

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  • 295 Bacup Road CSO

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:73spills458.1hours
  • Bacup Road/Markross Street CSO

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:49spills168.1hours
  • Highfield Road CSO

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:13spills37hours
  • Langwood Brook CSO

    United Utilities · Clvrt'D Section Langwood Brook

    Current status unknown
    2025 annual record:6spills9.9hours
  • Manchester Road (Bent Street) CSO

    United Utilities · Culverted Langwood Brook

    Current status unknown
    2025 annual record:2spills0.3hours
  • Manchester Road/Dalesford Road

    United Utilities · Rvr Irwell via Langwood Brook

    Current status unknown
    2025 annual record:58spills52.9hours
  • New Hall Hey Bridge CSO

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:0spills0hours
  • New Hall Hey Road CSO

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:30spills111.3hours
  • ROSSENDALE WwTW

    United Utilities · River Irwell

    Current status unknown
    2025 annual record:84spills1,204.6hours

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
    ROSSENDALE WwTW

    United Utilities

    84spills
  2. 2
    295 Bacup Road CSO

    United Utilities

    73spills
  3. 3
    Manchester Road/Dalesford Road

    United Utilities

    58spills
  4. 4
    Bacup Road/Markross Street CSO

    United Utilities

    49spills
  5. 5
    New Hall Hey Road CSO

    United Utilities

    30spills

Spills over time

The median outlet on Irwell (Cowpe Bk to Rossendale STW) recorded 30 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. 2 recorded more spills, 5 fewer and 1 the same. Together they went from 355 to 302 spills, a fall of 15%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202593153011
202493721719

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 Irwell (Cowpe Bk to Rossendale STW)

9 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: GB112069064641. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Irwell (Cowpe Bk to Rossendale STW)

Which outlets are linked to Irwell (Cowpe Bk to Rossendale STW)?
The source links 9 outlet records to waterbody GB112069064641. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Irwell (Cowpe Bk to Rossendale STW)?
9 records report 315 spills in 2025 and 2,042 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 Irwell (Cowpe Bk to Rossendale STW)?
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 Irwell (Cowpe Bk to Rossendale STW) are linked to a live feed?
9 of the 9 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 Irwell (Cowpe Bk to Rossendale STW)?
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 Irwell (Cowpe Bk to Rossendale STW) is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.