Sewage Map

Walkden sewage map and spill data

261 storm overflows listed in the 2025 annual return sit within 10 km of the official Walkden reference point. All are operated by United Utilities. Check the latest company report for each outlet below.

261
Outlets within 10 km
5,915
Spills in 2025
21,141
Recorded hours
252
Linked to a live feed

29 records show monitor operation below 90%. This is a straight-line distance search, not a drainage or boundary join. Annual figures describe the whole of 2025, not today.

Rivers and waters these outlets name

Receiving waters named in the annual return for outlets on this page, with the number of outlets for each.

Official place reference ↗How spills are countedSearch by postcode

Outlets near Walkden

Filter by the latest company report or search within this area. 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 261 outlets

Open full map

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
    91 Manchester Road CSO

    United Utilities · Croal Minor

    114spills
  2. 2
    West of Hacken Works (Syphon) CSO

    United Utilities · River Croal

    100spills
  3. 3
    Birtenshaw Farm CSO (BOL0151)

    United Utilities · Eagley Brook

    98spills
  4. 4
    No 76 Middle Brook CSO

    United Utilities · Middle Brook

    94spills
  5. 5
    Clammerclough CSO

    United Utilities · River Croal

    93spills

Spills over time

The median outlet near Walkden recorded 13 spills in 2025, against 11 across England.

209 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 29 recorded more spills, 159 fewer and 21 the same. Together they went from 7,227 to 5,092 spills, a fall of 30%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20252615,9151311
20242618,1101719

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 near Walkden

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

A9 outlets
B26 outlets
C25 outlets
D7 outlets
E6 outlets
F11 outlets
G9 outlets
H14 outlets
I1 outlet
J1 outlet
K6 outlets
L25 outlets
M19 outlets
N5 outlets
O4 outlets
P12 outlets
R14 outlets
S21 outlets
T15 outlets
U2 outlets
V3 outlets
W23 outlets
Y2 outlets
Z1 outlet

Sources and dates

Outlet locations and spill figures come from the Environment Agency 2025 event duration monitoring annual return. The place reference point is the ONS built-up area point (ID E63001222). The latest company reports come from each operator’s live feed and carry their own dates.

All sourcesHow the data worksReport pollution

Questions about Walkden

What area does this Walkden page cover?
It shows outlets within 10 km of the official place reference point. It does not follow council, town or postcode boundaries. Use the postcode search on the map for a search around your own location.
How many spills were recorded near Walkden?
261 outlet records report 5,915 spills in 2025. Every record on this page has a usable count.
Which water companies operate outlets near Walkden?
United Utilities operates every outlet listed on this page. Open a company page to see its full outlet list and annual totals.
Which outlets near Walkden are linked to a live feed?
252 of the 261 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 check the latest report and its date. The other 9 show annual figures only.
Did any outlet near Walkden record zero spills in 2025?
36 records report zero counted spills in 2025. 29 records on this page have monitor operation below 90%, so check coverage before treating a low count as reliable.
Does nearby mean an outlet affected Walkden?
No. This is a straight-line location search. The map does not model drainage, river flow or pollution travel, and a nearby outlet can discharge into a different watercourse.