Duporth water quality

GREEN

designated bathing water · · South West Water

Duporth is a designated bathing water in Cornwall, currently rated GREEN for swimming — No recent overflow, low rainfall, no high samples. Its latest Environment Agency classification is excellent (2025), and 212 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, 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, low rainfall, no high samples.

Active overflows nearby: 0
Recent overflows (48h): 0
Rainfall (48h): 1.1 mm

Official EA classification

excellent (2025)

Latest official sample

2026-06-20 — E.coli 10, enterococci 10 cfu/100ml

Latest independent sample

None published

Pollution & environment data

1.1 mm

Rainfall 48h

1.9 mm

Rainfall 7d

Outfalls within 5 km

212

Spills (2025, official)

Spills 2026 so far (live)

Spills last 30d

high 1.18m

Tide now

Recent storm overflows nearby (30 days)

In the news nearby

Devon County Council prepares historic lawsuit against South West Water · 2026-06-27
Welsh Water to pay £44 . 7m over sewage spills after seriou failures · 2026-06-05
South West Water owner says firm must rebuild trust after parasite outbreak · 2026-06-10
River Lim Action Group blast sewage discharges in Lyme Regis | Bridport and Lyme Regis News · 2026-06-11
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
South West Water owner says firm must rebuild trust after parasite outbreak | East London and West Essex Guardian Series · 2026-06-10

Storm-overflow spills near here, by year (EDM)

Recent spills near here (precise, SWW)

spill, 2 min2026-06-10 · ~4.0 km
spill, 2 min2026-06-10 · ~4.0 km
spill, 228 min2026-06-06 · ~2.3 km
spill, 228 min2026-06-06 · ~2.3 km
spill, 13 min2026-06-03 · ~0.4 km
spill, 13 min2026-06-03 · ~0.4 km
spill, 2 min2026-05-21 · ~3.6 km
spill, 2 min2026-05-21 · ~3.6 km

Full spill history near Duporth

Download CSV

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

12 discharge events

Start	End	Outfall	Distance
2026-06-10 09:35	2026-06-10 09:38	TRIBUTARY OF WHITE RIVER	~4.0 km
2026-06-06 07:57	2026-06-06 11:45	ST AUSTELL RIVER	~2.3 km
2026-06-03 19:53	2026-06-03 20:06	ST AUSTELL BAY (C)	~0.4 km
2026-05-21 09:48	2026-05-21 09:51	POLGOOTH STREAM	~3.6 km
2026-05-19 13:54	2026-05-19 14:49	RIVER PAR	~4.6 km
2026-05-15 09:24	2026-05-15 09:25	ST AUSTELL RIVER(S)	~3.0 km
2026-05-08 10:24	2026-05-08 10:25	ST BLAZEY STREAM	~4.5 km
2026-05-01 09:15	2026-05-01 09:18	winWINSFORD SPST_PSCSOEO_WINSFORD	~0.4 km
2026-02-18 19:40	2026-02-18 20:00	SANDY RIVER	~1.4 km
2026-02-01 04:16	2026-02-01 04:35	(C) ST AUSTELL BAY	~3.1 km
2025-12-20 18:38	2025-12-20 18:46	ST AUSTELL RIVER (S)	~4.2 km
2025-10-23 07:41	2025-10-23 07:42	ST AUSTELL BAY (C)	~0.7 km

26 precise spill records (duration & volume)

When	Detail	Distance
2026-06-10 09:35	spill, 2 min	~4.0 km
2026-06-10 09:35	spill, 2 min	~4.0 km
2026-06-06 07:57	spill, 228 min	~2.3 km
2026-06-06 07:57	spill, 228 min	~2.3 km
2026-06-03 19:53	spill, 13 min	~0.4 km
2026-06-03 19:53	spill, 13 min	~0.4 km
2026-05-21 09:48	spill, 2 min	~3.6 km
2026-05-21 09:48	spill, 2 min	~3.6 km
2026-05-19 13:54	spill, 55 min	~4.6 km
2026-05-19 13:54	spill, 55 min	~4.6 km
2026-05-15 09:24	spill, 1 min	~3.0 km
2026-05-15 09:24	spill, 1 min	~3.0 km
2026-05-08 10:24	spill, 1 min	~4.5 km
2026-05-08 10:24	spill, 1 min	~4.5 km
2026-05-01 09:15	spill, 2 min	~0.4 km
2026-05-01 09:15	spill, 2 min	~0.4 km
2026-02-18 19:40	spill, 21 min	~1.4 km
2026-02-18 19:40	spill, 21 min	~1.4 km
2026-02-01 04:16	spill, 20 min	~3.1 km
2026-02-01 04:16	spill, 20 min	~3.1 km
2026-01-08 11:29	spill, 2 min	~4.1 km
2026-01-08 11:29	spill, 2 min	~4.1 km
2025-12-20 18:38	spill, 8 min	~4.2 km
2025-12-20 18:38	spill, 8 min	~4.2 km
2025-10-23 07:41	spill, 1 min	~0.7 km
2025-10-23 07:41	spill, 1 min	~0.7 km

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

Water quality trend

Duporth — frequently asked questions

Is it safe to swim at Duporth today?

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

Has there been a sewage spill near Duporth?

212 storm-overflow spills were recorded near Duporth in 2025 (EA Event Duration Monitoring), and 10 spill events have been logged nearby so far this year.

What is Duporth's bathing water classification?

Duporth is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated: 3 h ago (2026-06-29 14:15 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, 12 outfalls monitored within 5 km.
Risk model: v0.3
Download: Sample timeline (JSON) · All beaches (CSV)

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