Trevaunance Cove water quality

AMBER

designated bathing water · · South West Water

Trevaunance Cove is a designated bathing water in Cornwall, currently rated AMBER for swimming — A storm overflow discharged within 5 km in the last 48 hours. Incoming/high tide may carry discharge closer to shore. Its latest Environment Agency classification is excellent (2025), and 127 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?
Take care
A storm overflow discharged within 5 km in the last 48 hours. Incoming/high tide may carry discharge closer to shore.
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: AMBER A storm overflow discharged within 5 km in the last 48 hours. Incoming/high tide may carry discharge closer to shore.

  • Active overflows nearby: 0
  • Recent overflows (48h): 8
  • Rainfall (48h): 27.4 mm

Official EA classification

excellent (2025)

Latest official sample

2026-09-24 — E.coli 10, enterococci 10 cfu/100ml

Latest independent sample

None published

Pollution & environment data

27.4 mm
Rainfall 48h
57.3 mm
Rainfall 7d
6
Outfalls within 5 km
127
Spills (2025, official)
20
Spills 2026 so far (live)
11
Spills last 30d
high 2.69m
Tide now

Recent storm overflows nearby (30 days)

In the news nearby

No recent local news matched.

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

Recent spills near here (precise, SWW)

Full spill history near Trevaunance Cove

Download CSV

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

22 discharge events
StartEndOutfallDistance
2026-10-23 06:452026-10-23 07:30TREVAUNANCE STREAM(S)~0.1 km
2026-10-23 06:222026-10-23 06:34TREVAUNANCE STREAM(S)~0.1 km
2026-10-23 02:152026-10-23 02:45TREVAUNANCE STREAM(S)~0.7 km
2026-10-23 01:532026-10-23 02:18TREVAUNANCE STREAM(S)~0.7 km
2026-10-22 19:322026-10-22 19:46TREVAUNANCE STREAM(S)~0.1 km
2026-10-22 19:162026-10-22 21:15TREVAUNANCE STREAM(S)~0.7 km
2026-10-22 19:132026-10-22 19:33TREVAUNANCE STREAM(S)~0.1 km
2026-10-22 19:022026-10-22 20:52TREVAUNANCE STREAM(S)~0.7 km
2026-10-06 11:532026-10-06 11:54TREVAUNANCE STREAM(S)~0.1 km
2026-09-29 20:152026-09-29 21:45TREVAUNANCE STREAM(S)~0.7 km
2026-09-29 19:532026-09-29 21:29TREVAUNANCE STREAM(S)~0.7 km
2026-09-08 03:342026-09-08 04:11TREVAUNANCE STREAM(S)~0.7 km
2026-07-23 19:192026-07-23 19:23LOCAL STREAM (S)~4.7 km
2026-07-23 10:202026-07-23 10:21LOCAL STREAM (S)~4.7 km
2026-07-19 19:302026-07-19 19:45LOCAL STREAM (S)~4.7 km
2026-07-19 19:132026-07-19 19:15LOCAL STREAM (S)~4.7 km
2026-06-06 07:122026-06-06 07:57TREVAUNANCE STREAM(S)~0.7 km
2026-05-18 01:352026-05-18 01:50TREVAUNANCE STREAM(S)~0.1 km
2026-03-02 14:092026-03-02 23:43PORTHTOWAN STREAM (S)~5.0 km
2026-03-01 11:032026-03-01 14:03LOCAL STREAM (S)~4.7 km
2025-07-22 14:242025-07-22 14:40BOLINGEY STREAM~4.6 km
2024-10-06 15:392024-10-06 15:40ATLANTIC OCEAN(C)~0.7 km
24 precise spill records (duration & volume)
WhenDetailDistance
2026-10-23 06:22spill, 12 min~0.1 km
2026-10-23 01:53spill, 26 min~0.7 km
2026-10-22 19:13spill, 20 min~0.1 km
2026-10-22 19:02spill, 109 min~0.7 km
2026-10-06 11:53spill, 1 min~0.1 km
2026-09-29 19:53spill, 95 min~0.7 km
2026-09-08 03:34spill, 37 min~0.7 km
2026-07-23 19:19spill, 4 min~4.7 km
2026-07-23 17:06spill, 1 min~4.7 km
2026-07-23 10:20spill, 1 min~4.7 km
2026-07-23 07:50spill, 1 min~4.7 km
2026-07-19 19:13spill, 2 min~4.7 km
2026-06-06 07:12spill, 45 min~0.7 km
2026-06-06 07:12spill, 45 min~0.7 km
2026-05-18 01:35spill, 15 min~0.1 km
2026-05-18 01:35spill, 15 min~0.1 km
2026-03-02 14:09spill, 573 min~5.0 km
2026-03-02 14:09spill, 573 min~5.0 km
2026-03-01 11:03spill, 180 min~4.7 km
2026-03-01 11:03spill, 180 min~4.7 km
2025-07-22 14:24spill, 15 min~4.6 km
2025-07-22 14:24spill, 15 min~4.6 km
2024-10-06 15:39spill, 1 min~0.7 km
2024-10-06 15:39spill, 1 min~0.7 km
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Water quality — 7-year trend

Water quality improved in 2026: average E. coli was 22% lower than 2025.

YearEA classificationSamplesE. coli (geo-mean)Enterococci (geo-mean)High readings
2019—1211 cfu/100ml12 cfu/100ml0
2020—310 cfu/100ml10 cfu/100ml0
2021—2128 cfu/100ml24 cfu/100ml3 of 21
2022—2021 cfu/100ml16 cfu/100ml1 of 20
2023—2416 cfu/100ml15 cfu/100ml0
2024—2011 cfu/100ml11 cfu/100ml0
2025excellent2016 cfu/100ml11 cfu/100ml1 of 20
2026—2012 cfu/100ml12 cfu/100ml0

Geometric mean of Environment Agency samples per calendar year (the standard bathing-water statistic). "High readings" are samples at or above 500 E. coli or 200 enterococci cfu/100ml.

Trevaunance Cove — frequently asked questions

Is it safe to swim at Trevaunance Cove today?

Trevaunance Cove is currently rated AMBER: A storm overflow discharged within 5 km in the last 48 hours. Incoming/high tide may carry discharge closer to shore. This is guidance only — also check official alerts and use your judgement.

Has there been a sewage spill near Trevaunance Cove?

127 storm-overflow spills were recorded near Trevaunance Cove in 2025 (EA Event Duration Monitoring), and 20 spill events have been logged nearby so far this year.

What is Trevaunance Cove's bathing water classification?

Trevaunance Cove is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated
10 min ago (2026-10-24 15:00 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, 6 outfalls monitored within 5 km.
Risk model
v0.4
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Sample timeline (JSON) · All beaches (CSV)
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