Sewage Map

United Utilities sewage map and spill data

United Utilities operates 2,270 storm overflows listed in the 2025 England annual return, on 1,141 named receiving waters. Check the latest company report for each outlet below.

2,270
Outlet records
60,843
Spills in 2025
327,453
Recorded hours
2,211
Linked to a live feed

194 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 United Utilities outlets

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

Official annual data ↗United Utilities 2025 reportHow spills are countedReport pollution

United Utilities 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 2,270 outlets

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Most recorded spills in 2025

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

  1. 1
    Lock Lane CSO

    Manchester Ship Canal

    217spills
  2. 2
    Blennerhassett Ww PS

    River Ellen

    172spills
  3. 3
    BRAYSTONES WwTW

    Irish Sea

    168spills
  4. 4
    STAVELEY WwTW

    River Kent

    167spills
  5. 5
    North Wirral WwTW (Meols)

    River Birket

    164spills

Spills over time

The median outlet run by United Utilities recorded 15 spills in 2025, against 11 across England.

1,917 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 455 recorded more spills, 1,255 fewer and 207 the same. Together they went from 69,803 to 53,846 spills, a fall of 23%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20252,27060,8431511
20242,24277,8132119

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 United Utilities outlet records

2,270 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.

A108 outlets
B232 outlets
C213 outlets
D79 outlets
E42 outlets
F63 outlets
G108 outlets
H157 outlets
I18 outlets
J22 outlets
K48 outlets
L137 outlets
M166 outlets
N63 outlets
O84 outlets
P98 outlets
Q8 outlets
R111 outlets
S195 outlets
T96 outlets
U8 outlets
V17 outlets
W190 outlets
Y6 outlets
Z1 outlet

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 United Utilities live feed and carry their own dates.

All sourcesCoverage and gapsHow the data works

Questions about United Utilities

What do the United Utilities figures cover?
This page totals 2,270 outlet records with a usable 2025 spill count, out of 2,270 records in the England dataset. Missing values are not counted as zero.
How many United Utilities outlets are linked to a live feed?
2,211 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. 59 records have annual figures only.
How many United Utilities outlets recorded zero spills in 2025?
295 records report zero counted spills. 194 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 United Utilities with another company?
Take care. 194 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 United Utilities 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.