Sewage Map

Mole - Horley to Dorking sewage map and spill data

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

7
Outlet records
213
Spills in 2025
2,702
Recorded hours
7
Linked to a live feed

1 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 Mole - Horley to Dorking

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 7 of 7 outlets

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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
    Ironsbottom STW

    Thames Water

    70spills
  2. 2
    Horley (Surrey) STW

    Thames Water · monitor coverage 86.5%, below 90%

    59spills
  3. 3
    Earlswood STW

    Thames Water

    48spills
  4. 4
    Stonebridge sso, brockham

    Thames Water

    26spills
  5. 5
    Castle Gardens (Dorking) SPS

    Thames Water

    7spills

Spills over time

The median outlet on Mole - Horley to Dorking recorded 26 spills in 2025, against 11 across England.

4 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 1 recorded more spills, 3 fewer and 0 the same. Together they went from 105 to 58 spills, a fall of 45%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
202572132611
202472701219
202372201920
20221525213
20211989819

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 Mole - Horley to Dorking

7 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: GB106039017625. The official waterbody record is a source lookup; its classification is not imported here.

All sourcesHow the data worksReport pollution

Questions about Mole - Horley to Dorking

Which outlets are linked to Mole - Horley to Dorking?
The source links 7 outlet records to waterbody GB106039017625. The link comes from the annual return; it does not model where a discharge travelled.
How many spills were recorded for Mole - Horley to Dorking?
7 records report 213 spills in 2025 and 2,702 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 Mole - Horley to Dorking?
Thames Water operates every listed outlet. Contact the operator or the official pollution service if you see a problem in the water.
Which outlets on Mole - Horley to Dorking are linked to a live feed?
7 of the 7 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 Mole - Horley to Dorking?
1 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 Mole - Horley to Dorking is safe?
No. Event duration data does not measure bacteria, chemicals or current water quality. Use official local water-quality advice for that question.