Chapel Porth water quality

RED

designated bathing water · · South West Water

Chapel Porth 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 260 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): 15
  • Rainfall (48h): 25.9 mm

Official EA classification

excellent (2025)

Latest official sample

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

Latest independent sample

None published

Pollution & environment data

25.9 mm
Rainfall 48h
54.6 mm
Rainfall 7d
6
Outfalls within 5 km
260
Spills (2025, official)
40
Spills 2026 so far (live)
25
Spills last 30d
high 2.64m
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 Chapel Porth

Download CSV

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

41 discharge events
StartEndOutfallDistance
2026-10-24 10:15ongoingATLANTIC OCEAN (C)~4.9 km
2026-10-24 09:58ongoingATLANTIC OCEAN (C)~4.9 km
2026-10-23 06:452026-10-23 07:30TREVAUNANCE STREAM(S)~3.2 km
2026-10-23 06:222026-10-23 06:34TREVAUNANCE STREAM(S)~3.2 km
2026-10-23 04:302026-10-23 15:01ATLANTIC OCEAN (C)~4.9 km
2026-10-23 04:072026-10-23 14:46ATLANTIC OCEAN (C)~4.9 km
2026-10-23 02:152026-10-23 02:45TREVAUNANCE STREAM(S)~2.8 km
2026-10-23 01:532026-10-23 02:18TREVAUNANCE STREAM(S)~2.8 km
2026-10-23 01:152026-10-23 03:30ATLANTIC OCEAN (C)~4.9 km
2026-10-23 00:512026-10-23 03:15ATLANTIC OCEAN (C)~4.9 km
2026-10-22 20:192026-10-22 21:19ATLANTIC OCEAN (C)~4.9 km
2026-10-22 19:322026-10-22 19:46TREVAUNANCE STREAM(S)~3.2 km
2026-10-22 19:162026-10-22 21:15TREVAUNANCE STREAM(S)~2.8 km
2026-10-22 19:132026-10-22 19:33TREVAUNANCE STREAM(S)~3.2 km
2026-10-22 19:022026-10-22 20:52TREVAUNANCE STREAM(S)~2.8 km
2026-10-22 19:012026-10-22 22:00ATLANTIC OCEAN (C)~4.9 km
2026-10-22 18:392026-10-22 21:45ATLANTIC OCEAN (C)~4.9 km
2026-10-21 01:152026-10-21 02:00ATLANTIC OCEAN (C)~4.9 km
2026-10-21 00:482026-10-21 01:41ATLANTIC OCEAN (C)~4.9 km
2026-10-06 11:532026-10-06 11:54TREVAUNANCE STREAM(S)~3.2 km
2026-09-29 21:152026-09-29 23:45ATLANTIC OCEAN (C)~4.9 km
2026-09-29 20:482026-09-29 23:18ATLANTIC OCEAN (C)~4.9 km
2026-09-29 20:152026-09-29 21:45TREVAUNANCE STREAM(S)~2.8 km
2026-09-29 20:152026-09-29 20:30ATLANTIC OCEAN (C)~4.9 km
2026-09-29 19:532026-09-29 21:29TREVAUNANCE STREAM(S)~2.8 km
2026-09-08 08:272026-09-08 08:34ATLANTIC OCEAN (C)~4.9 km
2026-09-08 03:342026-09-08 04:11TREVAUNANCE STREAM(S)~2.8 km
2026-08-27 12:152026-08-27 12:45ATLANTIC OCEAN (C)~4.9 km
2026-08-27 12:102026-08-27 12:26ATLANTIC OCEAN (C)~4.9 km
2026-08-27 03:452026-08-27 04:45ATLANTIC OCEAN (C)~4.9 km
2026-08-27 03:412026-08-27 03:56ATLANTIC OCEAN (C)~4.9 km
2026-07-23 19:192026-07-23 19:23LOCAL STREAM (S)~1.6 km
2026-07-23 10:202026-07-23 10:21LOCAL STREAM (S)~1.6 km
2026-07-19 19:302026-07-19 19:45LOCAL STREAM (S)~1.6 km
2026-07-19 19:132026-07-19 19:15LOCAL STREAM (S)~1.6 km
2026-06-06 10:082026-06-06 10:21ATLANTIC OCEAN (C)~4.9 km
2026-06-06 07:122026-06-06 07:57TREVAUNANCE STREAM(S)~2.8 km
2026-05-18 01:352026-05-18 01:50TREVAUNANCE STREAM(S)~3.2 km
2026-03-02 14:092026-03-02 23:43PORTHTOWAN STREAM (S)~2.1 km
2026-03-01 11:032026-03-01 14:03LOCAL STREAM (S)~1.6 km
2024-10-06 15:392024-10-06 15:40ATLANTIC OCEAN(C)~2.9 km
37 precise spill records (duration & volume)
WhenDetailDistance
2026-10-24 09:58spill, 272 min~4.9 km
2026-10-23 06:22spill, 12 min~3.2 km
2026-10-23 04:07spill, 624 min~4.9 km
2026-10-23 01:53spill, 26 min~2.8 km
2026-10-23 00:51spill, 131 min~4.9 km
2026-10-22 20:19spill, 60 min~4.9 km
2026-10-22 20:05spill, 0 min~4.9 km
2026-10-22 19:13spill, 20 min~3.2 km
2026-10-22 19:02spill, 109 min~2.8 km
2026-10-22 18:39spill, 66 min~4.9 km
2026-10-22 18:25spill, 7 min~4.9 km
2026-10-21 00:48spill, 52 min~4.9 km
2026-10-06 11:53spill, 1 min~3.2 km
2026-09-29 20:48spill, 151 min~4.9 km
2026-09-29 19:53spill, 95 min~2.8 km
2026-09-08 08:27spill, 7 min~4.9 km
2026-09-08 03:34spill, 37 min~2.8 km
2026-08-27 12:10spill, 16 min~4.9 km
2026-08-27 03:41spill, 15 min~4.9 km
2026-08-27 02:51spill, 24 min~4.9 km
2026-07-23 19:19spill, 4 min~1.6 km
2026-07-23 17:06spill, 1 min~1.6 km
2026-07-23 10:20spill, 1 min~1.6 km
2026-07-23 07:50spill, 1 min~1.6 km
2026-07-19 19:13spill, 2 min~1.6 km
2026-06-06 10:08spill, 13 min~4.9 km
2026-06-06 10:08spill, 13 min~4.9 km
2026-06-06 07:12spill, 45 min~2.8 km
2026-06-06 07:12spill, 45 min~2.8 km
2026-05-18 01:35spill, 15 min~3.2 km
2026-05-18 01:35spill, 15 min~3.2 km
2026-03-02 14:09spill, 573 min~2.1 km
2026-03-02 14:09spill, 573 min~2.1 km
2026-03-01 11:03spill, 180 min~1.6 km
2026-03-01 11:03spill, 180 min~1.6 km
2024-10-06 15:39spill, 1 min~2.9 km
2024-10-06 15:39spill, 1 min~2.9 km
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Water quality — 7-year trend

Water quality in 2026 was broadly level with 2025.

YearEA classificationSamplesE. coli (geo-mean)Enterococci (geo-mean)High readings
2019—315 cfu/100ml10 cfu/100ml0
2020—310 cfu/100ml12 cfu/100ml0
2021—511 cfu/100ml10 cfu/100ml0
2022—1011 cfu/100ml10 cfu/100ml0
2023—1212 cfu/100ml11 cfu/100ml0
2024—1010 cfu/100ml11 cfu/100ml0
2025excellent2011 cfu/100ml12 cfu/100ml0
2026—1011 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.

Chapel Porth — frequently asked questions

Is it safe to swim at Chapel Porth today?

Chapel Porth 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 Chapel Porth?

260 storm-overflow spills were recorded near Chapel Porth in 2025 (EA Event Duration Monitoring), and 40 spill events have been logged nearby so far this year.

What is Chapel Porth's bathing water classification?

Chapel Porth is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated
9 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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