Sewage Map

River Dearne Darfield STW to River Don sewage map and spill data

22 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.

22
Outlet records
298
Spills in 2025
1,516
Recorded hours
22
Linked to a live feed

2 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 River Dearne Darfield STW to River Don

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 22 outlets

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  • Adwick Road/CSO

    Yorkshire Water · River Dearne

    Current status unknown
    2025 annual record:3spills1hours
  • Barnburgh/STW

    Yorkshire Water · Tributary of the River Dearne

    Current status unknown
    2025 annual record:17spills142.3hours
  • Bolton On Dearne/STW/3Xdwf Overflow

    Yorkshire Water · River Dearne

    Current status unknown
    2025 annual record:38spills293.5hours
  • Bolton On Dearne/STW/6Xdwf Overflow

    Yorkshire Water · River Dearne

    Current status unknown
    2025 annual record:11spills29.8hours
  • Furlong Pond/No 2 CSO

    Yorkshire Water · Far Moor Dyke

    Current status unknown
    2025 annual record:16spills51hours
  • Harlington Mill Ln/CSO

    Yorkshire Water · Culv Tributary of Old River Dearne

    Current status unknown
    2025 annual record:16spills125.3hours
  • Harlington Road/CSO

    Yorkshire Water · River Dearne

    Current status unknown
    2025 annual record:15spills9hours
  • Melton Green/CSO

    Yorkshire Water · Brook Dike

    Current status unknown
    2025 annual record:6spills3.3hours
  • Mexborough East/CSO

    Yorkshire Water · River Dearne

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

    Yorkshire Water · Brook Dike

    Current status unknown
    2025 annual record:0spills0hours

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
    Wombwell/STW/6Xdwf Overflow

    Yorkshire Water

    60spills
  2. 2
    Bolton On Dearne/STW/3Xdwf Overflow

    Yorkshire Water

    38spills
  3. 3
    Wath On Dearne/STW

    Yorkshire Water

    27spills
  4. 4
    Wath Brook Dike/CSO

    Yorkshire Water

    18spills
  5. 5
    Barnburgh/STW

    Yorkshire Water · monitor coverage 72.4%, below 90%

    17spills

Spills over time

The median outlet on River Dearne Darfield STW to River Don recorded 15 spills in 2025, against 11 across England.

20 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 14 fewer and 5 the same. Together they went from 383 to 264 spills, a fall of 31%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
2025222981511
2024224401519
20232256511.520
20221835810.513
2021173851619
2020183338.518

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 River Dearne Darfield STW to River Don

22 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: GB104027063173. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about River Dearne Darfield STW to River Don

Which outlets are linked to River Dearne Darfield STW to River Don?
The source links 22 outlet records to waterbody GB104027063173. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for River Dearne Darfield STW to River Don?
22 records report 298 spills in 2025 and 1,516 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 River Dearne Darfield STW to River Don?
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 River Dearne Darfield STW to River Don are linked to a live feed?
22 of the 22 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 River Dearne Darfield STW to River Don?
2 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 River Dearne Darfield STW to River Don is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.