Sewage Map

Calder from Ryburn Confluence to River Colne sewage map and spill data

39 storm overflows listed in the 2025 annual return name this water. All are operated by Yorkshire Water. Check the latest company report for each outlet below.

39
Outlet records
1,128
Spills in 2025
4,384
Recorded hours
39
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 countedSearch the national map

Outlets on Calder from Ryburn Confluence to River Colne

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 39 outlets

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  • Aleger Street/CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:27spills54.3hours
  • Back Wharf Street/CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:33spills43.2hours
  • Birds Royd Lane/No 2 CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:27spills21.2hours
  • Bonegate Lane/CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:119spills463hours
  • Bramston Street/CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:34spills61.8hours
  • Brighouse/Upper STW/3Xdwf Overflow

    Yorkshire Water · River Calder & River Colne

    Current status unknown
    2025 annual record:60spills372.3hours
  • Brighouse/Upper STW/6Xdwf Overflow

    Yorkshire Water · River Calder & River Colne

    Current status unknown
    2025 annual record:40spills231.3hours
  • Cooper Bridge/CSO

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:9spills6.5hours
  • Copley Village/No 2 SPS

    Yorkshire Water · River Calder

    Current status unknown
    2025 annual record:1spill8hours
  • Dark Lane/No 2 CSO

    Yorkshire Water · Tributary of the River Calder

    Current status unknown
    2025 annual record:32spills39.8hours

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
    Thornhills Beck Lane/CSO

    Yorkshire Water

    120spills
  2. 2
    Bonegate Lane/CSO

    Yorkshire Water

    119spills
  3. 3
    Huddersfield Rd 106/CSO

    Yorkshire Water

    77spills
  4. 3
    Woodhouse Lane/CSO

    Yorkshire Water

    77spills
  5. 5
    Halifax Copley/STW

    Yorkshire Water

    74spills

Spills over time

The median outlet on Calder from Ryburn Confluence to River Colne recorded 21 spills in 2025, against 11 across England.

35 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 5 recorded more spills, 24 fewer and 6 the same. Together they went from 1,370 to 1,033 spills, a fall of 25%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
2025391,1282111
2024391,4522819
2023391,8723220
2022339502413
2021311,1672719
2020298161618

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 Calder from Ryburn Confluence to River Colne

39 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: GB104027062642. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Calder from Ryburn Confluence to River Colne

Which outlets are linked to Calder from Ryburn Confluence to River Colne?
The source links 39 outlet records to waterbody GB104027062642. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Calder from Ryburn Confluence to River Colne?
39 records report 1,128 spills in 2025 and 4,384 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 Calder from Ryburn Confluence to River Colne?
Yorkshire Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Calder from Ryburn Confluence to River Colne are linked to a live feed?
39 of the 39 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 Calder from Ryburn Confluence to River Colne?
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 Calder from Ryburn Confluence to River Colne is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.