Perranuthnoe water quality

RED

designated bathing water · · South West Water

Perranuthnoe 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 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?
Avoid — pollution risk
Storm overflow discharging within 5 km right now. Incoming/high tide may carry discharge closer to shore.
South West Water status: Amber · since 2026-10-24 10:06
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): 6
  • Rainfall (48h): 35.1 mm

Official EA classification

excellent (2025)

Latest official sample

2026-09-22 — E.coli 280, enterococci 10 cfu/100ml

Latest independent sample

None published

Pollution & environment data

35.1 mm
Rainfall 48h
67.8 mm
Rainfall 7d
6
Outfalls within 5 km
130
Spills (2025, official)
26
Spills 2026 so far (live)
10
Spills last 30d
high 1.86m
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 Perranuthnoe

Download CSV

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

26 discharge events
StartEndOutfallDistance
2026-10-24 14:46ongoingLONGROCK STREAM~4.6 km
2026-10-24 14:05ongoingLONGROCK STREAM~4.6 km
2026-10-24 10:042026-10-24 13:46(C) MOUNTS BAY~0.5 km
2026-10-24 09:302026-10-24 13:30(C) MOUNTS BAY~0.5 km
2026-10-23 03:522026-10-23 04:03(C) MOUNTS BAY~0.5 km
2026-10-22 23:002026-10-23 09:31MOUNTS BAY (C)~4.6 km
2026-10-22 22:342026-10-23 09:16MOUNTS BAY (C)~4.6 km
2026-10-22 19:332026-10-22 19:44(C) MOUNTS BAY~0.5 km
2026-10-21 21:552026-10-21 22:05(C) MOUNTS BAY~0.5 km
2026-09-22 10:072026-09-22 10:08RED RIVER~4.5 km
2026-09-08 03:142026-09-08 06:26(C) MOUNTS BAY~0.5 km
2026-08-29 08:482026-08-29 09:23(C) MOUNTS BAY~0.5 km
2026-08-29 02:452026-08-29 04:30(C) MOUNTS BAY~0.5 km
2026-08-13 07:47ongoingLONGROCK STREAM~4.6 km
2026-08-11 14:152026-08-11 14:45LUDGVAN STREAM~4.6 km
2026-08-11 14:052026-08-11 14:06LUDGVAN STREAM~4.6 km
2026-07-22 20:072026-07-22 20:09MOUNTS BAY (C)~4.6 km
2026-07-12 15:522026-07-12 15:53LUDGVAN STREAM~4.6 km
2026-07-09 02:452026-07-09 06:30MOUNTS BAY (C)~4.6 km
2026-07-09 01:552026-07-09 02:01MOUNTS BAY (C)~4.6 km
2026-06-13 00:062026-06-15 07:12MOUNTS BAY (C)~4.6 km
2026-06-08 04:232026-06-08 04:43(C) MOUNTS BAY~0.5 km
2026-05-28 08:462026-05-28 08:49LUDGVAN STREAM~4.6 km
2026-04-27 10:572026-04-27 11:03LONGROCK STREAM~4.6 km
2026-01-29 17:002026-01-29 17:19STREAM (S)~1.6 km
2026-01-20 13:052026-01-20 13:09RED RIVER~4.5 km
27 precise spill records (duration & volume)
WhenDetailDistance
2026-10-24 14:05spill, 24 min~4.6 km
2026-10-24 10:04spill, 189 min~0.5 km
2026-10-24 09:06spill, 38 min~0.5 km
2026-10-23 03:52spill, 10 min~0.5 km
2026-10-22 22:34spill, 603 min~4.6 km
2026-10-22 19:33spill, 11 min~0.5 km
2026-10-21 21:55spill, 10 min~0.5 km
2026-09-22 10:07spill, 1 min~4.5 km
2026-09-08 03:14spill, 192 min~0.5 km
2026-08-29 08:48spill, 35 min~0.5 km
2026-08-13 07:47spill, 1489 min~4.6 km
2026-08-11 14:05spill, 2 min~4.6 km
2026-07-22 20:07spill, 2 min~4.6 km
2026-07-12 15:52spill, 1 min~4.6 km
2026-07-09 01:55spill, 5 min~4.6 km
2026-06-13 00:06spill, 3306 min~4.6 km
2026-06-13 00:06spill, 3306 min~4.6 km
2026-06-08 04:23spill, 20 min~0.5 km
2026-06-08 04:23spill, 20 min~0.5 km
2026-05-28 08:46spill, 3 min~4.6 km
2026-05-28 08:46spill, 3 min~4.6 km
2026-04-27 10:57spill, 6 min~4.6 km
2026-04-27 10:57spill, 6 min~4.6 km
2026-01-29 17:00spill, 20 min~1.6 km
2026-01-29 17:00spill, 20 min~1.6 km
2026-01-20 13:05spill, 4 min~4.5 km
2026-01-20 13:05spill, 4 min~4.5 km
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Water quality — 7-year trend

Water quality worsened in 2026: average E. coli was 30% higher than 2025.

YearEA classificationSamplesE. coli (geo-mean)Enterococci (geo-mean)High readings
2019—310 cfu/100ml10 cfu/100ml0
2020—310 cfu/100ml10 cfu/100ml0
2021—522 cfu/100ml17 cfu/100ml1 of 5
2022—1010 cfu/100ml11 cfu/100ml0
2023—1011 cfu/100ml13 cfu/100ml0
2024—1010 cfu/100ml10 cfu/100ml0
2025excellent2110 cfu/100ml10 cfu/100ml0
2026—1513 cfu/100ml11 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.

Perranuthnoe — frequently asked questions

Is it safe to swim at Perranuthnoe today?

Perranuthnoe 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 Perranuthnoe?

130 storm-overflow spills were recorded near Perranuthnoe in 2025 (EA Event Duration Monitoring), and 26 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
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, 6 outfalls monitored within 5 km.
Risk model
v0.4
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Sample timeline (JSON) · All beaches (CSV)
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