Sewage Map

Severn Trent Water sewage map and spill data

Severn Trent Water operates 2,452 storm overflows listed in the 2025 England annual return, on 973 named receiving waters. Check the latest company report for each outlet below.

2,452
Outlet records
36,471
Spills in 2025
200,361
Recorded hours
2,360
Linked to a live feed

21 records have no usable spill count. 90 records show monitor operation below 90%. Annual figures describe the whole of 2025, not today. Company totals are not a league table.

Waters with the most Severn Trent Water outlets

Receiving waters named in the annual return, with the number of this company’s outlets on each.

Official annual data ↗Severn Trent Water 2025 reportHow spills are countedReport pollution

Severn Trent Water outlets

Filter by the latest company report, or search by outlet, receiving water, town or postcode. 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 2,452 outlets

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Most recorded spills in 2025

The highest 2025 counts among Severn Trent Water outlets. A count is events, not volume or harm. Equal counts share a rank.

  1. 1
    Lydney STW (SSTO)

    River Severn Estuary · monitor coverage 89.7%, below 90%

    178spills
  2. 2
    Church Stretton STW (SSTO)

    Tributary of Quinny Brook

    162spills
  3. 3
    Blakeney (STW)

    River Severn

    153spills
  4. 4
    Warslow STW (SSTO)

    Warslow Brook

    152spills
  5. 5
    Prees - Mill Street (CSO)

    Tributary of Sidleymoor Brook

    151spills

Spills over time

The median outlet run by Severn Trent Water recorded 8 spills in 2025, against 11 across England.

2,154 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 415 recorded more spills, 1,415 fewer and 324 the same. Together they went from 54,191 to 31,989 spills, a fall of 41%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20252,43136,471811
20242,43861,93313.519
202370629,8613120
202270920,6342113
202167929,8463119
202067329,1142418

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 Severn Trent Water outlet records

2,452 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.

A114 outlets
B312 outlets
C193 outlets
D98 outlets
E75 outlets
F47 outlets
G54 outlets
H183 outlets
I29 outlets
J2 outlets
K98 outlets
L154 outlets
M135 outlets
N115 outlets
O36 outlets
P59 outlets
Q6 outlets
R75 outlets
S342 outlets
T92 outlets
U12 outlets
W209 outlets
Y12 outlets

Sources and dates

Outlet locations, receiving waters and spill figures come from the Environment Agency 2025 event duration monitoring annual return for England. The latest reports come from the Severn Trent Water live feed and carry their own dates.

All sourcesCoverage and gapsHow the data works

Questions about Severn Trent Water

What do the Severn Trent Water figures cover?
This page totals 2,431 outlet records with a usable 2025 spill count, out of 2,452 records in the England dataset. Missing values are not counted as zero.
How many Severn Trent Water outlets are linked to a live feed?
2,360 records are matched to a monitor in the company live feed. A link does not mean the monitor is working now. Use the status filters above to see the latest report and its date. 92 records have annual figures only.
How many Severn Trent Water outlets recorded zero spills in 2025?
429 records report zero counted spills. 90 records have monitor operation below 90%, so a zero from one of those outlets may not cover the whole year.
Does a recorded spill show how much sewage was discharged?
No. Event duration monitors report when an overflow operated. They do not measure the volume released or the water quality.
Can I compare Severn Trent Water with another company?
Take care. 90 records have monitor operation below 90%, and companies differ in outlet numbers and area. Check missing values and monitor coverage before making a comparison.
How do I report pollution from a Severn Trent Water outlet?
Use the official pollution reporting route in our guide. Give the outlet name, permit reference and the time you saw the problem. Sewage Map does not send incident reports.