Pentewan water quality
GREENdesignated bathing water · · South West Water
Pentewan 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 215 storm-overflow spills were recorded nearby in 2025. Below: live risk, recent spills, official samples, rainfall, tides and nearby reports.
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): 2.0 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
Recent storm overflows nearby (30 days)
No spills recorded within 5 km in the last 30 days.
In the news nearby
- Water companies in England and Wales explore surge pricing bills during drought · 2026-08-16
- Devon County Council prepares historic lawsuit against South West Water · 2026-06-27
- South West Water owner says firm must rebuild trust after parasite outbreak · 2026-06-10
- Hove beach trip left woman with parasite and in hospital for weeks after swallowing contaminated seawater · 2026-08-04
- Why the whopping £1 . 6million payout for the Thames Water CEO spells disaster for Britain future : ALEX BRUMMER · 2026-07-17
- South West Water owner says firm must rebuild trust after parasite outbreak · 2026-06-10
- South West Water owner says firm must rebuild trust after parasite outbreak · 2026-06-10
- South West Water owner says firm must rebuild trust after parasite outbreak · 2026-06-10
Storm-overflow spills near here, by year (EDM)
Recent spills near here (precise, SWW)
- spill, 41 min2026-07-07 · ~1.9 km
- spill, 2 min2026-06-10 · ~1.9 km
- spill, 2 min2026-06-10 · ~1.9 km
- spill, 228 min2026-06-06 · ~4.2 km
- spill, 228 min2026-06-06 · ~4.2 km
- spill, 13 min2026-06-03 · ~4.9 km
- spill, 13 min2026-06-03 · ~4.9 km
- spill, 13 min2026-06-01 · ~4.7 km
Full spill history near Pentewan
Download CSVEvery storm-overflow discharge Glanmor has recorded within 5 km of Pentewan, newest first.
13 discharge events
| Start | End | Outfall | Distance |
|---|---|---|---|
| 2026-07-07 12:30 | 2026-07-07 12:45 | TRIBUTARY OF WHITE RIVER | ~1.9 km |
| 2026-07-07 11:35 | 2026-07-07 12:16 | TRIBUTARY OF WHITE RIVER | ~1.9 km |
| 2026-06-10 09:35 | 2026-06-10 09:38 | TRIBUTARY OF WHITE RIVER | ~1.9 km |
| 2026-06-06 07:57 | 2026-06-06 11:45 | ST AUSTELL RIVER | ~4.2 km |
| 2026-06-03 19:53 | 2026-06-03 20:06 | ST AUSTELL BAY (C) | ~4.9 km |
| 2026-06-01 19:19 | 2026-06-01 19:32 | PORTMELLON STREAM(S) | ~4.7 km |
| 2026-05-21 09:48 | 2026-05-21 09:51 | POLGOOTH STREAM | ~3.9 km |
| 2026-05-15 09:24 | 2026-05-15 09:25 | ST AUSTELL RIVER(S) | ~3.3 km |
| 2026-05-01 09:15 | 2026-05-01 09:18 | winWINSFORD SPST_PSCSOEO_WINSFORD | ~4.9 km |
| 2026-04-12 14:23 | 2026-04-12 14:27 | MEVAGISSEY BAY | ~1.8 km |
| 2025-12-20 18:38 | 2025-12-20 18:46 | ST AUSTELL RIVER (S) | ~0.5 km |
| 2025-11-04 12:33 | 2025-11-04 12:34 | STREAM (S) | ~2.9 km |
| 2025-10-23 07:41 | 2025-10-23 07:42 | ST AUSTELL BAY (C) | ~4.0 km |
23 precise spill records (duration & volume)
| When | Detail | Distance |
|---|---|---|
| 2026-07-07 11:35 | spill, 41 min | ~1.9 km |
| 2026-06-10 09:35 | spill, 2 min | ~1.9 km |
| 2026-06-10 09:35 | spill, 2 min | ~1.9 km |
| 2026-06-06 07:57 | spill, 228 min | ~4.2 km |
| 2026-06-06 07:57 | spill, 228 min | ~4.2 km |
| 2026-06-03 19:53 | spill, 13 min | ~4.9 km |
| 2026-06-03 19:53 | spill, 13 min | ~4.9 km |
| 2026-06-01 19:19 | spill, 13 min | ~4.7 km |
| 2026-06-01 19:19 | spill, 13 min | ~4.7 km |
| 2026-05-21 09:48 | spill, 2 min | ~3.9 km |
| 2026-05-21 09:48 | spill, 2 min | ~3.9 km |
| 2026-05-15 09:24 | spill, 1 min | ~3.3 km |
| 2026-05-15 09:24 | spill, 1 min | ~3.3 km |
| 2026-05-01 09:15 | spill, 2 min | ~4.9 km |
| 2026-05-01 09:15 | spill, 2 min | ~4.9 km |
| 2026-04-12 14:23 | spill, 3 min | ~1.8 km |
| 2026-04-12 14:23 | spill, 3 min | ~1.8 km |
| 2025-12-20 18:38 | spill, 8 min | ~0.5 km |
| 2025-12-20 18:38 | spill, 8 min | ~0.5 km |
| 2025-11-04 12:33 | spill, 2 min | ~2.9 km |
| 2025-11-04 12:33 | spill, 2 min | ~2.9 km |
| 2025-10-23 07:41 | spill, 1 min | ~4.0 km |
| 2025-10-23 07:41 | spill, 1 min | ~4.0 km |
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 | — | 13 | 11 cfu/100ml | 13 cfu/100ml | 0 |
| 2020 | — | 3 | 10 cfu/100ml | 10 cfu/100ml | 0 |
| 2021 | — | 20 | 12 cfu/100ml | 14 cfu/100ml | 0 |
| 2022 | — | 20 | 14 cfu/100ml | 13 cfu/100ml | 1 of 20 |
| 2023 | — | 20 | 17 cfu/100ml | 15 cfu/100ml | 0 |
| 2024 | — | 20 | 13 cfu/100ml | 14 cfu/100ml | 0 |
| 2025 | excellent | 20 | 12 cfu/100ml | 13 cfu/100ml | 0 |
| 2026 | — | 11 | 12 cfu/100ml | 15 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.
Pentewan — frequently asked questions
Is it safe to swim at Pentewan today?
Pentewan 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 Pentewan?
215 storm-overflow spills were recorded near Pentewan in 2025 (EA Event Duration Monitoring), and 10 spill events have been logged nearby so far this year.
What is Pentewan's bathing water classification?
Pentewan is classified excellent for 2025 by the Environment Agency.
Data & provenance
- Last updated
- just now (2026-08-26 18:30 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, 11 outfalls monitored within 5 km.
- Risk model
- v0.4
- Download
- Sample timeline (JSON) · All beaches (CSV)
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