Irwell (Rossendale STW to Roch) sewage map and spill data

17 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.

17
Outlet records: 477
Spills in 2025: 1,693
Recorded hours: 17
Linked to a live feed

3 records show monitor operation below 90%. Annual figures describe the whole of 2025, not today.

Official waterbody record ↗How spills are counted Search the national map

Outlets on Irwell (Rossendale STW to Roch)

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 17 outlets

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807 Walmersley Road (Bury) CSO
United Utilities · Walmersely Brook
Current status unknown
2025 annual record:0spills0hours

Buckley Wells CSO
United Utilities · River Irwell
Current status unknown
2025 annual record:51spills123.4hours
Burnley Road CSO
United Utilities · Walmersley Brook
Current status unknown
2025 annual record:67spills100.5hours
BURY WwTW
United Utilities · River Irwell
Current status unknown
2025 annual record:38spills142.8hours
BURY WwTW
United Utilities · River Irwell
Current status unknown
2025 annual record:57spills616.9hours
Carr Street CSO
United Utilities · River Irwell
Current status unknown
2025 annual record:4spills2.9hours
Dumers Lane PS
United Utilities · River Irwell
Current status unknown
2025 annual record:0spills0hours
Morris Street CSO
United Utilities · River Irwell
Current status unknown
2025 annual record:5spills0.6hours
Nuttall Hall Road CSO
United Utilities · River Irwell
Current status unknown
2025 annual record:45spills163.3hours
Off Walmersley Road CSO
United Utilities · Pigs Lea Brook Tributary Rvr Irwell
Current status unknown
2025 annual record:0spills0hours

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
Peel Hall Drive CSO
United Utilities
88spills
2
Burnley Road CSO
United Utilities
67spills
3
BURY WwTW
United Utilities
57spills
4
Tanpits Road
United Utilities
53spills
5
Buckley Wells CSO
United Utilities
51spills

Spills over time

The median outlet on Irwell (Rossendale STW to Roch) recorded 24 spills in 2025, against 11 across England.

12 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 4 recorded more spills, 7 fewer and 1 the same. Together they went from 420 to 316 spills, a fall of 25%.

Largest rises from 2024 to 2025

Year	Outlets with a count	Total spills	Median per outlet	England median
2025	17	477	24	11
2024	17	653	32	19

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 (Rossendale STW to Roch)

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

807 Walmersley Road (Bury) CSOWalmersely Brook · 0 spills in 2025
Buckley Wells CSORiver Irwell · 51 spills in 2025
Burnley Road CSOWalmersley Brook · 67 spills in 2025
BURY WwTWRiver Irwell · 38 spills in 2025
BURY WwTWRiver Irwell · 57 spills in 2025
Carr Street CSORiver Irwell · 4 spills in 2025
Dumers Lane PSRiver Irwell · 0 spills in 2025
Morris Street CSORiver Irwell · 5 spills in 2025
Nuttall Hall Road CSORiver Irwell · 45 spills in 2025
Off Walmersley Road CSOPigs Lea Brook Tributary Rvr Irwell · 0 spills in 2025
Peel Hall Drive CSORiver Irwell · 88 spills in 2025
Peel Hall Drive CSORiver Irwell · 13 spills in 2025
Railway Street CSORiver Irwell · 29 spills in 2025
Redvales Road CSORiver Irwell via Culvert · 0 spills in 2025
Seedfield Secondary Modern School CSOUnnamed Tributary of River Irwell · 24 spills in 2025
Tanpits RoadRiver Irwell · 53 spills in 2025
Waterside Mill Combined Sewer OverflowRiver Irwell · 3 spills in 2025

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: GB112069064620. The official waterbody record is a source lookup; its classification is not imported here.

All sources How the data works Report pollution

Questions about Irwell (Rossendale STW to Roch)

Which outlets are linked to Irwell (Rossendale STW to Roch)?: The source links 17 outlet records to waterbody GB112069064620. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Irwell (Rossendale STW to Roch)?: 17 records report 477 spills in 2025 and 1,693 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 (Rossendale STW to Roch)?: 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 (Rossendale STW to Roch) are linked to a live feed?: 17 of the 17 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 (Rossendale STW to Roch)?: 3 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 (Rossendale STW to Roch) is safe?: No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.