Perranuthnoe water quality

GREEN

designated bathing water · · South West Water

Perranuthnoe is a designated bathing water in Cornwall, currently rated GREEN for swimming — No recent overflow, no pollution warning, low rainfall, no high samples. Its latest Environment Agency classification is excellent (2025), and 130 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, no pollution warning, 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, no pollution warning, low rainfall, no high samples.

Active overflows nearby: 0
Recent overflows (48h): 0
Rainfall (48h): 2.5 mm

Official EA classification

excellent (2025)

Latest official sample

2026-08-18 — E.coli 10, enterococci 10 cfu/100ml

Latest independent sample

None published

Pollution & environment data

2.5 mm

Rainfall 48h

6.6 mm

Rainfall 7d

Outfalls within 5 km

130

Spills (2025, official)

Spills 2026 so far (live)

Spills last 30d

falling -0.43m

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, 1489 min2026-08-13 · ~4.6 km
spill, 2 min2026-08-11 · ~4.6 km
spill, 2 min2026-07-22 · ~4.6 km
spill, 1 min2026-07-12 · ~4.6 km
spill, 5 min2026-07-09 · ~4.6 km
spill, 3306 min2026-06-13 · ~4.6 km
spill, 3306 min2026-06-13 · ~4.6 km
spill, 20 min2026-06-08 · ~0.5 km

Full spill history near Perranuthnoe

Download CSV

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

13 discharge events

Start	End	Outfall	Distance
2026-08-13 07:47	ongoing	LONGROCK STREAM	~4.6 km
2026-08-11 14:15	2026-08-11 14:45	LUDGVAN STREAM	~4.6 km
2026-08-11 14:05	2026-08-11 14:06	LUDGVAN STREAM	~4.6 km
2026-07-22 20:07	2026-07-22 20:09	MOUNTS BAY (C)	~4.6 km
2026-07-12 15:52	2026-07-12 15:53	LUDGVAN STREAM	~4.6 km
2026-07-09 02:45	2026-07-09 06:30	MOUNTS BAY (C)	~4.6 km
2026-07-09 01:55	2026-07-09 02:01	MOUNTS BAY (C)	~4.6 km
2026-06-13 00:06	2026-06-15 07:12	MOUNTS BAY (C)	~4.6 km
2026-06-08 04:23	2026-06-08 04:43	(C) MOUNTS BAY	~0.5 km
2026-05-28 08:46	2026-05-28 08:49	LUDGVAN STREAM	~4.6 km
2026-04-27 10:57	2026-04-27 11:03	LONGROCK STREAM	~4.6 km
2026-01-29 17:00	2026-01-29 17:19	STREAM (S)	~1.6 km
2026-01-20 13:05	2026-01-20 13:09	RED RIVER	~4.5 km

17 precise spill records (duration & volume)

When	Detail	Distance
2026-08-13 07:47	spill, 1489 min	~4.6 km
2026-08-11 14:05	spill, 2 min	~4.6 km
2026-07-22 20:07	spill, 2 min	~4.6 km
2026-07-12 15:52	spill, 1 min	~4.6 km
2026-07-09 01:55	spill, 5 min	~4.6 km
2026-06-13 00:06	spill, 3306 min	~4.6 km
2026-06-13 00:06	spill, 3306 min	~4.6 km
2026-06-08 04:23	spill, 20 min	~0.5 km
2026-06-08 04:23	spill, 20 min	~0.5 km
2026-05-28 08:46	spill, 3 min	~4.6 km
2026-05-28 08:46	spill, 3 min	~4.6 km
2026-04-27 10:57	spill, 6 min	~4.6 km
2026-04-27 10:57	spill, 6 min	~4.6 km
2026-01-29 17:00	spill, 20 min	~1.6 km
2026-01-29 17:00	spill, 20 min	~1.6 km
2026-01-20 13:05	spill, 4 min	~4.5 km
2026-01-20 13:05	spill, 4 min	~4.5 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	—	3	10 cfu/100ml	10 cfu/100ml	0
2020	—	3	10 cfu/100ml	10 cfu/100ml	0
2021	—	5	22 cfu/100ml	17 cfu/100ml	1 of 5
2022	—	10	10 cfu/100ml	11 cfu/100ml	0
2023	—	10	11 cfu/100ml	13 cfu/100ml	0
2024	—	10	10 cfu/100ml	10 cfu/100ml	0
2025	excellent	21	10 cfu/100ml	10 cfu/100ml	0
2026	—	11	11 cfu/100ml	10 cfu/100ml	0

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.

Perranuthnoe — frequently asked questions

Is it safe to swim at Perranuthnoe today?

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

Has there been a sewage spill near Perranuthnoe?

130 storm-overflow spills were recorded near Perranuthnoe in 2025 (EA Event Duration Monitoring), and 13 spill events have been logged nearby so far this year.

What is Perranuthnoe's bathing water classification?

Perranuthnoe is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated: 14 min ago (2026-08-26 19:15 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, 6 outfalls monitored within 5 km.
Risk model: v0.4
Download: Sample timeline (JSON) · All beaches (CSV)

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