Great Western water quality

GREEN

designated bathing water · · South West Water

Great Western is a designated bathing water in Cornwall, currently rated GREEN for swimming — No recent overflow, low rainfall, no high samples. Its latest Environment Agency classification is excellent (2025), and 178 storm-overflow spills were recorded nearby in 2025. Below: live risk, recent spills, official samples, rainfall, tides and nearby reports.

Safe to swim right now?
Looking good right now
No recent overflow, low rainfall, no high samples.
Do not rely solely on this website for health decisions. Check official alerts and use your own judgement. Seek medical advice if you are unwell.

Current status

Risk: GREEN No recent overflow, low rainfall, no high samples.

  • Active overflows nearby: 0
  • Recent overflows (48h): 0
  • Rainfall (48h): 2.6 mm

Official EA classification

excellent (2025)

Latest official sample

2026-06-16 — E.coli 10, enterococci 10 cfu/100ml

Latest independent sample

None published

Pollution & environment data

2.6 mm
Rainfall 48h
3.2 mm
Rainfall 7d
8
Outfalls within 5 km
178
Spills (2025, official)
8
Spills 2026 so far (live)
2
Spills last 30d
falling 1.88m
Tide now

Recent storm overflows nearby (30 days)

In the news nearby

Storm-overflow spills near here, by year (EDM)

Recent spills near here (precise, SWW)

Full spill history near Great Western

Download CSV

Every storm-overflow discharge Glanmor has recorded within 5 km of Great Western, newest first.

8 discharge events
StartEndOutfallDistance
2026-06-19 23:482026-06-19 23:58UNNAMED DITCH,TRENANCE LAKE(S)~1.8 km
2026-06-18 02:262026-06-18 04:19TRIB OF PORTH JOKE~4.2 km
2026-05-22 16:312026-05-22 16:36ATLANTIC OCEAN (C)~2.5 km
2026-05-03 17:292026-05-03 18:59ATLANTIC OCEAN(T)~1.8 km
2026-05-03 13:422026-05-03 14:14RIVER GANNEL (S)~2.7 km
2026-03-03 13:372026-03-03 13:50NEWQUAY BAY (C)~0.8 km
2026-02-27 21:402026-03-06 03:58STREAM/ATLANTIC OCEAN (S)~4.1 km
2026-02-01 22:542026-02-01 22:58CRANTOCK BEACH (C)~2.8 km
18 precise spill records (duration & volume)
WhenDetailDistance
2026-06-19 23:48spill, 10 min~1.8 km
2026-06-19 23:48spill, 10 min~1.8 km
2026-06-18 02:26spill, 113 min~4.2 km
2026-06-18 02:26spill, 113 min~4.2 km
2026-05-22 16:31spill, 6 min~2.5 km
2026-05-22 16:31spill, 6 min~2.5 km
2026-05-03 17:29spill, 90 min~1.8 km
2026-05-03 17:29spill, 90 min~1.8 km
2026-05-03 13:42spill, 32 min~2.7 km
2026-05-03 13:42spill, 32 min~2.7 km
2026-03-03 13:37spill, 13 min~0.8 km
2026-03-03 13:37spill, 13 min~0.8 km
2026-02-27 21:40spill, 9018 min~4.1 km
2026-02-27 21:40spill, 9018 min~4.1 km
2026-02-25 12:14spill, 6 min~2.0 km
2026-02-25 12:14spill, 6 min~2.0 km
2026-02-01 22:54spill, 3 min~2.8 km
2026-02-01 22:54spill, 3 min~2.8 km
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Water quality trend

Great Western — frequently asked questions

Is it safe to swim at Great Western today?

Great Western is currently rated GREEN: No recent overflow, low rainfall, no high samples. This is guidance only — also check official alerts and use your judgement.

Has there been a sewage spill near Great Western?

178 storm-overflow spills were recorded near Great Western in 2025 (EA Event Duration Monitoring), and 8 spill events have been logged nearby so far this year.

What is Great Western's bathing water classification?

Great Western is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated
3 h ago (2026-06-29 14:15 UTC)
Sources
Environment Agency (samples & classification), South West Water (overflows), EA EDM (annual spills), Open-Meteo (rainfall & tide). Full list on about.
Confidence
High — official classification, 8 outfalls monitored within 5 km.
Risk model
v0.3
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Sample timeline (JSON) · All beaches (CSV)
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