Calder from River Chald to River Aire sewage map and spill data

14 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.

14
Outlet records: 450
Spills in 2025: 2,507
Recorded hours: 14
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 Calder from River Chald to River Aire

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 14 outlets

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Aberford Road/CSO
Yorkshire Water · River Calder
Current status unknown
2025 annual record:46spills188hours

Aketon Road Cutsyke/CSO
Yorkshire Water · Carr Beck
Current status unknown
2025 annual record:16spills23.5hours
Bottom Boat Road/CSO
Yorkshire Water · River Calder
Current status unknown
2025 annual record:3spills2.3hours
Calder Vale/STW/3Xdwf Overflow
Yorkshire Water · River Calder
Current status unknown
2025 annual record:47spills511.3hours
Calder Vale/STW/6Xdwf Overflow
Yorkshire Water · River Calder
Current status unknown
2025 annual record:38spills216hours
Eastmoor/CSO
Yorkshire Water · River Calder
Current status unknown
2025 annual record:59spills198.8hours
Glass Houghton/CSO
Yorkshire Water · Carr Beck
Current status unknown
2025 annual record:34spills37.5hours
Kirkgate Chantry Brdg/CSO
Yorkshire Water · River Calder via Pumped Outlet
Current status unknown
2025 annual record:23spills82.3hours
Normanton/STW
Yorkshire Water · River Calder
Current status unknown
2025 annual record:70spills719.2hours
Park Hill Farm/CSO
Yorkshire Water · River Calder
Current status unknown
2025 annual record:55spills188.8hours

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
Normanton/STW
Yorkshire Water
70spills
2
Eastmoor/CSO
Yorkshire Water
59spills
3
Park Hill Farm/CSO
Yorkshire Water
55spills
4
Calder Vale/STW/3Xdwf Overflow
Yorkshire Water
47spills
5
Aberford Road/CSO
Yorkshire Water
46spills

Spills over time

The median outlet on Calder from River Chald to River Aire recorded 31.5 spills in 2025, against 11 across England.

13 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 5 recorded more spills, 6 fewer and 2 the same. Together they went from 559 to 427 spills, a fall of 24%.

Largest rises from 2024 to 2025

Year	Outlets with a count	Total spills	Median per outlet	England median
2025	14	450	31.5	11
2024	14	569	40.5	19
2023	14	685	43.5	20
2022	11	425	41	13
2021	10	446	50	19
2020	9	281	17	18

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 River Chald to River Aire

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

Aberford Road/CSORiver Calder · 46 spills in 2025
Aketon Road Cutsyke/CSOCarr Beck · 16 spills in 2025
Bottom Boat Road/CSORiver Calder · 3 spills in 2025
Calder Vale/STW/3Xdwf OverflowRiver Calder · 47 spills in 2025
Calder Vale/STW/6Xdwf OverflowRiver Calder · 38 spills in 2025
Eastmoor/CSORiver Calder · 59 spills in 2025
Glass Houghton/CSOCarr Beck · 34 spills in 2025
Kirkgate Chantry Brdg/CSORiver Calder via Pumped Outlet · 23 spills in 2025
Normanton/STWRiver Calder · 70 spills in 2025
Park Hill Farm/CSORiver Calder · 55 spills in 2025
Stanley Water Lane/CSONot Known · 0 spills in 2025
Stanley/STWRiver Calder & Bramley'S Beck · 29 spills in 2025
Stanley/STWRiver Calder & Bramley'S Beck · 27 spills in 2025
Whitwood/CSOWillowbridge Beck · 3 spills 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: GB104027062632. The official waterbody record is a source lookup; its classification is not imported here.

All sources How the data works Report pollution

Questions about Calder from River Chald to River Aire

Which outlets are linked to Calder from River Chald to River Aire?: The source links 14 outlet records to waterbody GB104027062632. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Calder from River Chald to River Aire?: 14 records report 450 spills in 2025 and 2,507 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 River Chald to River Aire?: 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 River Chald to River Aire are linked to a live feed?: 14 of the 14 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 River Chald to River Aire?: Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Calder from River Chald to River Aire is safe?: No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.