Whittle Brook (Mersey Estuary) sewage map and spill data
2 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.
- 2
- Outlet records
- 7
- Spills in 2025
- 29
- Recorded hours
- 2
- Linked to a live feed
Annual figures describe the whole of 2025, not today.
Outlets on Whittle Brook (Mersey Estuary)
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 2 of 2 outlets
Open full map- Highfield Avenue CSOCurrent status unknown
United Utilities · Tributary Whittle Brook via SWS
2025 annual record:6spills25.8hours - The Warrington Road CSOCurrent status unknown
United Utilities · Whittle Brook
2025 annual record:1spill3.1hours
No outlets match these filters.
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.
- 1Highfield Avenue CSO6spills
United Utilities
- 2The Warrington Road CSO1spills
United Utilities
Spills over time
The median outlet on Whittle Brook (Mersey Estuary) recorded 3.5 spills in 2025, against 11 across England.
1 outlet has a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 0 recorded more spills, 1 fewer and 0 the same. Together it went from 13 to 1 spills, a fall of 92%.
| Year | Outlets with a count | Total spills | Median per outlet | England median |
|---|---|---|---|---|
| 2025 | 2 | 7 | 3.5 | 11 |
| 2024 | 2 | 20 | 10 | 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 Whittle Brook (Mersey Estuary)
2 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Highfield Avenue CSOTributary Whittle Brook via SWS · 6 spills in 2025
- The Warrington Road CSOWhittle Brook · 1 spill 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: GB112069060990. The official waterbody record is a source lookup; its classification is not imported here.
Questions about Whittle Brook (Mersey Estuary)
- Which outlets are linked to Whittle Brook (Mersey Estuary)?
- The source links 2 outlet records to waterbody GB112069060990. The link comes from the annual return; it does not model where a discharge travelled.
- How many spills were recorded for Whittle Brook (Mersey Estuary)?
- 2 records report 7 spills in 2025 and 29 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 Whittle Brook (Mersey Estuary)?
- 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 Whittle Brook (Mersey Estuary) are linked to a live feed?
- 2 of the 2 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 Whittle Brook (Mersey Estuary)?
- Every record with a monitor operation figure shows 90% or more for 2025.
- Does this show if Whittle Brook (Mersey Estuary) is safe?
- No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.