Ribble - conf Calder to tidal sewage map and spill data

8 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.

8
Outlet records: 278
Spills in 2025: 1,847
Recorded hours: 8
Linked to a live feed

Annual figures describe the whole of 2025, not today.

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

Outlets on Ribble - conf Calder to tidal

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 8 of 8 outlets

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Cuerdale Lane CSO
United Utilities · River Ribble
Current status unknown
2025 annual record:0spills0hours

Grimsargh CSO
United Utilities · Tributary Tun Brook
Current status unknown
2025 annual record:0spills0hours
Hurst Green WwTW
United Utilities · Dean Brook
Current status unknown
2025 annual record:143spills1,363.9hours
Lower Brundhurst Farm CSO
United Utilities · Tributary of Mellor Brook
Current status unknown
2025 annual record:68spills199.8hours
Mellor Brook PS
United Utilities · Mellor Brook
Current status unknown
2025 annual record:58spills206.1hours
Osbaldeston PS
United Utilities · Unnamed Tributary of Bezza Brook
Current status unknown
2025 annual record:2spills28.7hours
RIBCHESTER WwTW
United Utilities · River Ribble
Current status unknown
2025 annual record:6spills48.8hours
RIBCHESTER WwTW
United Utilities · River Ribble
Current status unknown
2025 annual record:1spill0hours

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
Hurst Green WwTW
United Utilities
143spills
2
Lower Brundhurst Farm CSO
United Utilities
68spills
3
Mellor Brook PS
United Utilities
58spills
4
RIBCHESTER WwTW
United Utilities
6spills
5
Osbaldeston PS
United Utilities
2spills

Spills over time

The median outlet on Ribble - conf Calder to tidal recorded 4 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. 0 recorded more spills, 8 fewer and 0 the same. Together they went from 371 to 278 spills, a fall of 25%.

Year	Outlets with a count	Total spills	Median per outlet	England median
2025	8	278	4	11
2024	8	371	7.5	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 Ribble - conf Calder to tidal

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

Cuerdale Lane CSORiver Ribble · 0 spills in 2025
Grimsargh CSOTributary Tun Brook · 0 spills in 2025
Hurst Green WwTWDean Brook · 143 spills in 2025
Lower Brundhurst Farm CSOTributary of Mellor Brook · 68 spills in 2025
Mellor Brook PSMellor Brook · 58 spills in 2025
Osbaldeston PSUnnamed Tributary of Bezza Brook · 2 spills in 2025
RIBCHESTER WwTWRiver Ribble · 6 spills in 2025
RIBCHESTER WwTWRiver Ribble · 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: GB112071065500. The official waterbody record is a source lookup; its classification is not imported here.

All sources How the data works Report pollution

Questions about Ribble - conf Calder to tidal

Which outlets are linked to Ribble - conf Calder to tidal?: The source links 8 outlet records to waterbody GB112071065500. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Ribble - conf Calder to tidal?: 8 records report 278 spills in 2025 and 1,847 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 Ribble - conf Calder to tidal?: 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 Ribble - conf Calder to tidal are linked to a live feed?: 8 of the 8 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 Ribble - conf Calder to tidal?: Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Ribble - conf Calder to tidal is safe?: No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.