Sewage Map

Sankey Brook (Rainford Brook to Mersey) sewage map and spill data

22 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.

22
Outlet records
342
Spills in 2025
2,546
Recorded hours
21
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 Sankey Brook (Rainford Brook to Mersey)

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 22 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
    Wharf Road CSO

    United Utilities

    44spills
  2. 2
    St Helens Wastewater Treatment Works (Site STHEL) (016920130)

    United Utilities

    42spills
  3. 3
    West End Wharf Road CSO

    United Utilities

    35spills
  4. 4
    Malvern Road (St.Helens) CSO

    United Utilities

    29spills
  5. 4
    Orford Park CSO

    United Utilities

    29spills

Spills over time

The median outlet on Sankey Brook (Rainford Brook to Mersey) recorded 11.5 spills in 2025, against 11 across England.

20 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 5 recorded more spills, 15 fewer and 0 the same. Together they went from 438 to 326 spills, a fall of 26%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20252234211.511
2024224791819

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 Sankey Brook (Rainford Brook to Mersey)

22 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: GB112069061200. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Sankey Brook (Rainford Brook to Mersey)

Which outlets are linked to Sankey Brook (Rainford Brook to Mersey)?
The source links 22 outlet records to waterbody GB112069061200. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Sankey Brook (Rainford Brook to Mersey)?
22 records report 342 spills in 2025 and 2,546 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 Sankey Brook (Rainford Brook to Mersey)?
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 Sankey Brook (Rainford Brook to Mersey) are linked to a live feed?
21 of the 22 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 Sankey Brook (Rainford Brook to Mersey)?
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 Sankey Brook (Rainford Brook to Mersey) is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.