Sewage Map

Bollin (Ashley Mill to Manchester Ship Canal) sewage map and spill data

7 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.

7
Outlet records
239
Spills in 2025
1,362
Recorded hours
7
Linked to a live feed

2 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 Bollin (Ashley Mill to Manchester Ship Canal)

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 7 of 7 outlets

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  • BOWDON WwTW

    United Utilities · River Bollin

    Current status unknown
    2025 annual record:61spills604.8hours
  • Cecil Road/Ashley Road CSO

    United Utilities · Tributary of River Bollin via SWS

    Current status unknown
    2025 annual record:1spill0.3hours
  • Dunham Massey Outfall SSO

    United Utilities · River Bollin via SWS

    Current status unknown
    2025 annual record:43spills166.8hours
  • DUNHAM MASSEY WwTW

    United Utilities · River Bollin

    Current status unknown
    2025 annual record:43spills237.9hours
  • Green Dragon Hotel CSO

    United Utilities · River Bollin

    Current status unknown
    2025 annual record:19spills60hours
  • Oughtrington Lane CSO

    United Utilities · Bridgewater Canal

    Current status unknown
    2025 annual record:1spill5.8hours
  • Pool Bank Farm, Bowdon CSO

    United Utilities · River Bollin

    Current status unknown
    2025 annual record:71spills286.1hours

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
    Pool Bank Farm, Bowdon CSO

    United Utilities · monitor coverage 83.5%, below 90%

    71spills
  2. 2
    BOWDON WwTW

    United Utilities

    61spills
  3. 3
    Dunham Massey Outfall SSO

    United Utilities

    43spills
  4. 3
    DUNHAM MASSEY WwTW

    United Utilities

    43spills
  5. 5
    Green Dragon Hotel CSO

    United Utilities

    19spills

Spills over time

The median outlet on Bollin (Ashley Mill to Manchester Ship Canal) recorded 43 spills in 2025, against 11 across England.

5 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 4 fewer and 0 the same. Together they went from 278 to 167 spills, a fall of 40%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202572394311
202473704719

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 Bollin (Ashley Mill to Manchester Ship Canal)

7 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: GB112069061382. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Bollin (Ashley Mill to Manchester Ship Canal)

Which outlets are linked to Bollin (Ashley Mill to Manchester Ship Canal)?
The source links 7 outlet records to waterbody GB112069061382. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Bollin (Ashley Mill to Manchester Ship Canal)?
7 records report 239 spills in 2025 and 1,362 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 Bollin (Ashley Mill to Manchester Ship Canal)?
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 Bollin (Ashley Mill to Manchester Ship Canal) are linked to a live feed?
7 of the 7 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 Bollin (Ashley Mill to Manchester Ship Canal)?
2 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 Bollin (Ashley Mill to Manchester Ship Canal) is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.