Sewage Map

Derwent from River Rye to Kirkham sewage map and spill data

24 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.

24
Outlet records
514
Spills in 2025
3,184
Recorded hours
24
Linked to a live feed

Annual figures describe the whole of 2025, not today.

Official waterbody record ↗How spills are countedSearch the national map

Outlets on Derwent from River Rye to Kirkham

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 24 outlets

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  • Balaclava/No 2 CSO

    Yorkshire Water · Priorpot Beck

    Current status unknown
    2025 annual record:0spills0hours
  • Castlegate/CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:20spills402.5hours
  • Chandlers Wharf/CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:23spills223.7hours
  • Firby/STW

    Yorkshire Water · Unnamed Tributary of Derwent

    Current status unknown
    2025 annual record:0spills0hours
  • Hawkswell Lane/CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:5spills1.2hours
  • Lascelles Lane/CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:31spills38hours
  • Malton Holmesfld/CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:88spills22.6hours
  • Malton/STW/3Xdwf Overflow

    Yorkshire Water · The River Derwent

    Current status unknown
    2025 annual record:35spills419hours
  • Norton Church St/2 CSO

    Yorkshire Water · River Derwent

    Current status unknown
    2025 annual record:54spills113.2hours
  • Old Maltongate/CSO

    Yorkshire Water · The River Derwent

    Current status unknown
    2025 annual record:2spills0.1hours

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
    Welham Road North/Hlr

    Yorkshire Water

    90spills
  2. 2
    Malton Holmesfld/CSO

    Yorkshire Water

    88spills
  3. 3
    Westow/STW

    Yorkshire Water

    69spills
  4. 4
    Norton Church St/2 CSO

    Yorkshire Water

    54spills
  5. 5
    Wheelgate/CSO

    Yorkshire Water

    46spills

Spills over time

The median outlet on Derwent from River Rye to Kirkham recorded 7.5 spills in 2025, against 11 across England.

22 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 5 recorded more spills, 11 fewer and 6 the same. Together they went from 615 to 424 spills, a fall of 31%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
2025245147.511
2024246761419
2023247641920
202222519413
2021175952719
202020284218

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 Derwent from River Rye to Kirkham

24 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: GB104027068313. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Derwent from River Rye to Kirkham

Which outlets are linked to Derwent from River Rye to Kirkham?
The source links 24 outlet records to waterbody GB104027068313. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Derwent from River Rye to Kirkham?
24 records report 514 spills in 2025 and 3,184 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 Derwent from River Rye to Kirkham?
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 Derwent from River Rye to Kirkham are linked to a live feed?
24 of the 24 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 Derwent from River Rye to Kirkham?
Every record with a monitor operation figure shows 90% or more for 2025.
Does this show if Derwent from River Rye to Kirkham is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.