Trevone Bay water quality

RED

designated bathing water · · South West Water

Trevone Bay is a designated bathing water in Cornwall, currently rated RED for swimming — Storm overflow discharging within 5 km right now. Incoming/high tide may carry discharge closer to shore. Its latest Environment Agency classification is excellent (2025), and 317 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?

Avoid — pollution risk

Storm overflow discharging within 5 km right now. 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: RED Storm overflow discharging within 5 km right now. Incoming/high tide may carry discharge closer to shore.

Active overflows nearby: 2
Recent overflows (48h): 23
Rainfall (48h): 34.7 mm

Official EA classification

excellent (2025)

Latest official sample

2026-09-25 — E.coli 10, enterococci 18 cfu/100ml

Latest independent sample

None published

Pollution & environment data

34.7 mm

Rainfall 48h

69.8 mm

Rainfall 7d

Outfalls within 5 km

317

Spills (2025, official)

Spills 2026 so far (live)

Spills last 30d

high 2.79m

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)

spill, 77 min2026-10-24 · ~3.3 km
spill, 125 min2026-10-24 · ~4.3 km
spill, 16 min2026-10-24 · ~4.3 km
spill, 2 min2026-10-24 · ~4.3 km
spill, 192 min2026-10-24 · ~2.3 km
spill, 20 min2026-10-24 · ~4.3 km
spill, 23 min2026-10-23 · ~2.3 km
spill, 10 min2026-10-23 · ~4.3 km

Full spill history near Trevone Bay

Download CSV

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

74 discharge events

Start	End	Outfall	Distance
2026-10-24 14:00	2026-10-24 15:00	RIVER CAMEL ESTUARY (E)	~3.3 km
2026-10-24 11:46	ongoing	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-24 11:42	2026-10-24 11:52	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-24 11:30	2026-10-24 15:00	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-24 11:18	ongoing	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-23 19:31	2026-10-23 19:46	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-23 19:11	2026-10-23 19:34	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-23 08:53	2026-10-23 09:03	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-23 06:30	2026-10-23 08:00	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-23 06:15	2026-10-23 08:00	CAMEL ESTUARY (E)	~4.6 km
2026-10-23 06:00	2026-10-23 07:45	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-23 05:57	2026-10-23 07:45	CAMEL ESTUARY (E)	~4.6 km
2026-10-23 05:45	2026-10-23 12:31	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-23 05:24	2026-10-23 12:16	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-23 05:15	2026-10-23 06:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-23 00:15	2026-10-23 01:15	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-22 23:58	2026-10-23 00:52	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-22 23:45	2026-10-23 00:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-22 23:43	2026-10-22 23:53	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-22 23:00	2026-10-22 23:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-22 21:01	2026-10-22 21:16	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-22 20:34	2026-10-22 21:03	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-22 20:18	2026-10-22 20:25	CAMEL ESTUARY (E)	~3.3 km
2026-10-22 20:15	2026-10-22 21:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-22 19:50	2026-10-22 21:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-21 23:15	2026-10-21 23:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-21 23:00	2026-10-21 23:09	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-21 22:30	2026-10-21 22:45	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-21 22:04	2026-10-21 22:28	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-21 22:00	2026-10-21 22:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-21 21:45	2026-10-21 22:15	CAMEL ESTUARY (E)	~3.3 km
2026-10-21 21:43	2026-10-21 22:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-21 21:36	2026-10-21 21:43	CAMEL ESTUARY (E)	~3.3 km
2026-10-21 00:15	2026-10-21 00:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-20 23:57	2026-10-21 00:13	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-15 21:30	2026-10-15 21:45	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-15 20:56	2026-10-15 21:32	MOTHER IVEYS BAY (C)	~2.3 km
2026-10-15 20:45	2026-10-15 21:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-10-15 20:35	2026-10-15 21:03	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-30 12:45	2026-09-30 13:00	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-30 12:25	2026-09-30 12:42	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-29 21:38	2026-09-29 21:42	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-29 20:15	2026-09-29 21:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-17 05:10	2026-09-17 05:21	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-08 09:21	2026-09-08 09:24	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-09-08 06:18	2026-09-08 07:41	RIVER CAMEL ESTUARY (E)	~3.3 km
2026-09-08 06:04	2026-09-08 06:11	CAMEL ESTUARY (E)	~3.3 km
2026-09-08 05:49	2026-09-08 10:59	MOTHER IVEYS BAY (C)	~2.3 km
2026-08-30 19:15	2026-08-30 20:15	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-30 19:01	2026-08-30 19:51	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-30 14:30	2026-08-30 14:45	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-30 14:13	2026-08-30 14:18	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-30 12:45	2026-08-30 13:00	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-30 12:36	2026-08-30 12:42	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-29 08:51	2026-08-29 09:02	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-29 04:45	2026-08-29 05:30	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-27 03:45	2026-08-27 04:00	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-27 03:37	2026-08-27 04:00	MOTHER IVEYS BAY (C)	~2.3 km
2026-08-27 03:16	2026-08-27 03:45	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-14 19:30	2026-08-14 19:45	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-08-14 19:15	2026-08-14 19:24	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-07-18 15:44	2026-07-18 15:47	RIVER CAMEL ESTUARY (E)	~3.3 km
2026-07-18 14:45	2026-07-18 17:15	RIVER CAMEL ESTUARY (E)	~3.3 km
2026-07-16 00:29	2026-07-16 00:31	CAMEL ESTUARY (E)	~3.9 km
2026-07-01 09:00	2026-07-01 09:08	TREVONE BAY	~0.5 km
2026-06-25 09:48	2026-06-25 09:50	CAMEL ESTUARY (E)	~2.9 km
2026-06-25 09:09	2026-06-25 09:11	CAMEL ESTUARY (E)	~3.3 km
2026-06-18 09:03	2026-06-18 09:08	RIVER CAMEL ESTUARY (E)	~3.3 km
2026-06-18 08:45	2026-06-18 08:47	TREYARNON STREAM	~3.3 km
2026-06-17 07:26	2026-06-17 07:43	MOTHER IVEYS BAY (C)	~2.3 km
2026-06-17 06:54	2026-06-17 07:38	TRIB OF LITTLE PETHERICK CREEK	~4.3 km
2026-06-15 10:12	2026-06-15 10:13	CAMEL ESTUARY (E)	~3.9 km
2026-06-08 08:36	2026-06-08 08:37	CAMEL ESTUARY (E)	~4.6 km
2026-03-02 14:43	2026-03-03 01:13	TREVONE BAY	~0.5 km

77 precise spill records (duration & volume)

When	Detail	Distance
2026-10-24 13:13	spill, 77 min	~3.3 km
2026-10-24 12:24	spill, 125 min	~4.3 km
2026-10-24 11:58	spill, 16 min	~4.3 km
2026-10-24 11:42	spill, 2 min	~4.3 km
2026-10-24 11:18	spill, 192 min	~2.3 km
2026-10-24 11:10	spill, 20 min	~4.3 km
2026-10-23 19:11	spill, 23 min	~2.3 km
2026-10-23 08:53	spill, 10 min	~4.3 km
2026-10-23 08:30	spill, 2 min	~4.3 km
2026-10-23 08:05	spill, 2 min	~4.3 km
2026-10-23 07:52	spill, 3 min	~4.3 km
2026-10-23 07:27	spill, 5 min	~4.3 km
2026-10-23 07:14	spill, 1 min	~4.3 km
2026-10-23 06:53	spill, 0 min	~4.3 km
2026-10-23 06:32	spill, 0 min	~4.3 km
2026-10-23 06:00	spill, 15 min	~4.3 km
2026-10-23 05:57	spill, 93 min	~4.6 km
2026-10-23 05:51	spill, 3 min	~4.3 km
2026-10-23 05:36	spill, 5 min	~4.3 km
2026-10-23 05:24	spill, 400 min	~2.3 km
2026-10-23 05:08	spill, 0 min	~4.3 km
2026-10-22 23:58	spill, 53 min	~2.3 km
2026-10-22 23:43	spill, 10 min	~4.3 km
2026-10-22 23:27	spill, 3 min	~4.3 km
2026-10-22 22:43	spill, 9 min	~4.3 km
2026-10-22 20:34	spill, 29 min	~2.3 km
2026-10-22 20:18	spill, 7 min	~3.3 km
2026-10-22 19:50	spill, 65 min	~4.3 km
2026-10-22 19:35	spill, 2 min	~4.3 km
2026-10-21 23:00	spill, 9 min	~4.3 km
2026-10-21 22:04	spill, 23 min	~2.3 km
2026-10-21 21:43	spill, 21 min	~4.3 km
2026-10-21 21:36	spill, 8 min	~3.3 km
2026-10-20 23:57	spill, 17 min	~4.3 km
2026-10-15 20:56	spill, 36 min	~2.3 km
2026-10-15 20:35	spill, 28 min	~4.3 km
2026-09-30 12:25	spill, 17 min	~4.3 km
2026-09-29 21:38	spill, 5 min	~4.3 km
2026-09-17 05:10	spill, 11 min	~4.3 km
2026-09-08 09:21	spill, 3 min	~4.3 km
2026-09-08 06:18	spill, 83 min	~3.3 km
2026-09-08 06:04	spill, 7 min	~3.3 km
2026-09-08 05:49	spill, 310 min	~2.3 km
2026-09-08 01:41	spill, 4 min	~4.3 km
2026-09-07 21:47	spill, 29 min	~4.3 km
2026-08-30 19:01	spill, 50 min	~4.3 km
2026-08-30 14:13	spill, 5 min	~4.3 km
2026-08-30 12:36	spill, 5 min	~4.3 km
2026-08-29 08:51	spill, 11 min	~4.3 km
2026-08-27 03:37	spill, 23 min	~2.3 km
2026-08-27 03:16	spill, 30 min	~4.3 km
2026-08-14 19:15	spill, 8 min	~4.3 km
2026-07-18 15:44	spill, 2 min	~3.3 km
2026-07-18 14:43	spill, 0 min	~3.3 km
2026-07-18 14:36	spill, 0 min	~3.3 km
2026-07-16 00:29	spill, 2 min	~3.9 km
2026-07-01 09:00	spill, 9 min	~0.5 km
2026-06-25 09:48	spill, 2 min	~2.9 km
2026-06-25 09:48	spill, 2 min	~2.9 km
2026-06-25 09:09	spill, 2 min	~3.3 km
2026-06-25 09:09	spill, 2 min	~3.3 km
2026-06-18 09:03	spill, 5 min	~3.3 km
2026-06-18 09:03	spill, 5 min	~3.3 km
2026-06-18 08:45	spill, 2 min	~3.3 km
2026-06-18 08:45	spill, 2 min	~3.3 km
2026-06-17 07:26	spill, 17 min	~2.3 km
2026-06-17 07:26	spill, 17 min	~2.3 km
2026-06-17 06:54	spill, 44 min	~4.3 km
2026-06-17 06:54	spill, 44 min	~4.3 km
2026-06-15 10:12	spill, 1 min	~3.9 km
2026-06-15 10:12	spill, 1 min	~3.9 km
2026-06-08 08:36	spill, 1 min	~4.6 km
2026-06-08 08:36	spill, 1 min	~4.6 km
2026-03-03 12:25	spill, 10 min	~1.4 km
2026-03-03 12:25	spill, 10 min	~1.4 km
2026-03-02 14:43	spill, 630 min	~0.5 km
2026-03-02 14:43	spill, 630 min	~0.5 km

Take action — email SWW / your MP Got ill here? Build a report Report pollution

Water quality — 7-year trend

Water quality in 2026 was broadly level with 2025.

Year	EA classification	Samples	E. coli (geo-mean)	Enterococci (geo-mean)	High readings
2019	—	12	15 cfu/100ml	17 cfu/100ml	0
2020	—	4	12 cfu/100ml	13 cfu/100ml	0
2021	—	20	13 cfu/100ml	16 cfu/100ml	0
2022	—	20	16 cfu/100ml	18 cfu/100ml	2 of 20
2023	—	21	17 cfu/100ml	16 cfu/100ml	0
2024	—	20	16 cfu/100ml	15 cfu/100ml	1 of 20
2025	excellent	20	18 cfu/100ml	18 cfu/100ml	2 of 20
2026	—	20	16 cfu/100ml	16 cfu/100ml	2 of 20

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.

Trevone Bay — frequently asked questions

Is it safe to swim at Trevone Bay today?

Trevone Bay is currently rated RED: Storm overflow discharging within 5 km right now. 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 Trevone Bay?

317 storm-overflow spills were recorded near Trevone Bay in 2025 (EA Event Duration Monitoring), and 74 spill events have been logged nearby so far this year.

What is Trevone Bay's bathing water classification?

Trevone Bay is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated: 8 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, 9 outfalls monitored within 5 km.
Risk model: v0.4
Download: Sample timeline (JSON) · All beaches (CSV)

🔗 Embed this beach status on your site

Surf clubs, hotels and councils — paste this into your page to show a live Trevone Bay status card:

<iframe src="https://glanmor.owrek.com/embed/trevone-bay" width="340" height="180" style="border:0;width:340px;height:180px" title="Trevone Bay water quality – Glanmor" loading="lazy"></iframe>