Sewage Map

Plymouth sewage map and spill data

163 storm overflows listed in the 2025 annual return sit within 10 km of the official Plymouth reference point. All are operated by South West Water. Check the latest company report for each outlet below.

163
Outlets within 10 km
4,461
Spills in 2025
24,968
Recorded hours
160
Linked to a live feed

1 records have no usable spill count. 8 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 Plymouth

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 163 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
    Gratton STW SSO Yelverton

    South West Water · River Meavy

    143spills
  2. 2
    Central STW Shaft 16 Spst Pscsoeo Plymou

    South West Water · Plymouth Sound/PLYM Estuary(E)

    119spills
  3. 3
    Ernesettle STW So Plymouth

    South West Water · River Tamar (E)

    114spills
  4. 4
    3 St Peters Close CSO Plymouth

    South West Water · Long Brook via SWS

    107spills
  5. 5
    Lipson Vale 1 CSO Plymouth

    South West Water · Tributary of the River Plym via SWS

    95spills

Spills over time

The median outlet near Plymouth recorded 20.5 spills in 2025, against 11 across England.

145 outlets have a comparable count for both 2024 and 2025, with the monitor working at least 90% of each year. 73 recorded more spills, 56 fewer and 16 the same. Together they went from 4,182 to 4,014 spills, a fall of 4%.

Largest rises from 2024 to 2025

YearOutlets with a countTotal spillsMedian per outletEngland median
20251624,46120.511
20241624,6171619
20231544,59917.520
20221423,0981013
20211353,5101519

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 Plymouth

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

A5 outlets
B10 outlets
C22 outlets
D6 outlets
E9 outlets
F7 outlets
G7 outlets
H10 outlets
J1 outlet
K1 outlet
L3 outlets
M17 outlets
N2 outlets
O7 outlets
P7 outlets
R12 outlets
S14 outlets
T12 outlets
V1 outlet
W10 outlets

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 E63006926). The latest company reports come from each operator’s live feed and carry their own dates.

All sourcesHow the data worksReport pollution

Questions about Plymouth

What area does this Plymouth 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 Plymouth?
162 outlet records report 4,461 spills in 2025. 1 records have no usable count and are not treated as zero.
Which water companies operate outlets near Plymouth?
South West Water operates every outlet listed on this page. Open a company page to see its full outlet list and annual totals.
Which outlets near Plymouth are linked to a live feed?
160 of the 163 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 3 show annual figures only.
Did any outlet near Plymouth record zero spills in 2025?
12 records report zero counted spills in 2025. 8 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 Plymouth?
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.