Wherry Town water quality

AMBER

designated bathing water · · South West Water

Wherry Town is a designated bathing water in Cornwall, currently rated AMBER for swimming — A storm overflow discharged within 5 km in the last 48 hours. Falling tide may draw discharge along the shore. Its latest Environment Agency classification is excellent (2025), and 358 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?
Take care
A storm overflow discharged within 5 km in the last 48 hours. Falling tide may draw discharge along the 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: AMBER A storm overflow discharged within 5 km in the last 48 hours. Falling tide may draw discharge along the shore.

  • Active overflows nearby: 0
  • Recent overflows (48h): 1
  • Rainfall (48h): 4.4 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

4.4 mm
Rainfall 48h
23.3 mm
Rainfall 7d
9
Outfalls within 5 km
358
Spills (2025, official)
35
Spills 2026 so far (live)
16
Spills last 30d
falling 0.40m
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 Wherry Town

Download CSV

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

36 discharge events
StartEndOutfallDistance
2026-08-25 14:242026-08-25 14:27SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-21 08:452026-08-21 09:15SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-21 08:312026-08-21 08:52SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-20 12:182026-08-20 12:20MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-19 04:302026-08-19 05:15SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-19 04:022026-08-19 04:40SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-19 02:152026-08-19 03:15SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-19 01:552026-08-19 02:21SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-08-18 11:342026-08-18 11:36MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-17 14:562026-08-17 14:58MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-13 08:522026-08-13 08:54MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-13 07:47ongoingLONGROCK STREAM~3.7 km
2026-08-12 07:142026-08-12 07:16MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-10 21:302026-08-10 21:32MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-10 14:122026-08-10 14:14MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-08-05 11:342026-08-05 11:35LOCAL STREAM (S)~2.6 km
2026-07-23 18:152026-07-23 20:30MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-23 18:012026-07-23 20:15MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-22 20:072026-07-22 20:09MOUNTS BAY (C)~3.7 km
2026-07-13 09:562026-07-13 09:59SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-07-11 13:002026-07-11 14:15MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-11 12:382026-07-11 14:00MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-11 09:452026-07-11 10:45MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-09 02:452026-07-09 06:30MOUNTS BAY (C)~3.7 km
2026-07-09 01:552026-07-09 02:01MOUNTS BAY (C)~3.7 km
2026-07-06 05:202026-07-06 05:24MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-07-03 15:482026-07-03 15:50MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-06-24 17:212026-06-25 01:48MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-06-18 02:042026-06-18 02:06MOUNTS BAY ENGLISH CHANNEL~3.1 km
2026-06-16 19:122026-06-16 19:21SURFACE WATER DRAIN TO CHYANDR~2.3 km
2026-06-13 00:062026-06-15 07:12MOUNTS BAY (C)~3.7 km
2026-06-08 03:522026-06-08 04:03LOCAL STREAM (S)~2.4 km
2026-06-08 03:442026-06-08 03:52LOCAL STREAM (S)~2.6 km
2026-05-19 00:132026-05-19 00:15MOUNTS BAY (COASTAL)~3.1 km
2026-04-27 10:572026-04-27 11:03LONGROCK STREAM~3.7 km
2025-09-09 15:582025-09-09 16:47MOUNTS BAY~1.6 km
45 precise spill records (duration & volume)
WhenDetailDistance
2026-08-25 14:24spill, 2 min~2.3 km
2026-08-21 08:31spill, 21 min~2.3 km
2026-08-20 12:18spill, 2 min~3.1 km
2026-08-19 04:02spill, 39 min~2.3 km
2026-08-19 01:55spill, 26 min~2.3 km
2026-08-18 11:34spill, 2 min~3.1 km
2026-08-17 14:56spill, 2 min~3.1 km
2026-08-13 08:52spill, 2 min~3.1 km
2026-08-13 07:47spill, 1489 min~3.7 km
2026-08-13 06:54spill, 2 min~3.1 km
2026-08-12 07:14spill, 2 min~3.1 km
2026-08-11 20:30spill, 2 min~3.1 km
2026-08-11 13:00spill, 2 min~3.1 km
2026-08-10 21:30spill, 2 min~3.1 km
2026-08-10 18:28spill, 2 min~3.1 km
2026-08-10 14:12spill, 2 min~3.1 km
2026-08-10 07:10spill, 2 min~3.1 km
2026-08-08 21:42spill, 2 min~3.1 km
2026-08-05 11:34spill, 1 min~2.6 km
2026-07-23 18:01spill, 120 min~3.1 km
2026-07-22 20:07spill, 2 min~3.7 km
2026-07-13 09:56spill, 2 min~2.3 km
2026-07-11 12:38spill, 83 min~3.1 km
2026-07-11 09:08spill, 60 min~3.1 km
2026-07-09 01:55spill, 5 min~3.7 km
2026-07-06 05:20spill, 4 min~3.1 km
2026-07-03 15:48spill, 2 min~3.1 km
2026-06-24 17:21spill, 506 min~3.1 km
2026-06-24 17:21spill, 506 min~3.1 km
2026-06-18 02:04spill, 2 min~3.1 km
2026-06-18 02:04spill, 2 min~3.1 km
2026-06-16 19:12spill, 10 min~2.3 km
2026-06-16 19:12spill, 10 min~2.3 km
2026-06-13 00:06spill, 3306 min~3.7 km
2026-06-13 00:06spill, 3306 min~3.7 km
2026-06-08 03:52spill, 11 min~2.4 km
2026-06-08 03:52spill, 11 min~2.4 km
2026-06-08 03:44spill, 8 min~2.6 km
2026-06-08 03:44spill, 8 min~2.6 km
2026-05-19 00:13spill, 2 min~3.1 km
2026-05-19 00:13spill, 2 min~3.1 km
2026-04-27 10:57spill, 6 min~3.7 km
2026-04-27 10:57spill, 6 min~3.7 km
2025-09-09 15:58spill, 49 min~1.6 km
2025-09-09 15:58spill, 49 min~1.6 km
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Water quality — 7-year trend

Water quality improved in 2026: average E. coli was 15% lower than 2025.

YearEA classificationSamplesE. coli (geo-mean)Enterococci (geo-mean)High readings
2019—1217 cfu/100ml16 cfu/100ml0
2020—325 cfu/100ml54 cfu/100ml0
2021—2018 cfu/100ml33 cfu/100ml3 of 20
2022—2015 cfu/100ml16 cfu/100ml1 of 20
2023—2119 cfu/100ml21 cfu/100ml2 of 21
2024—2014 cfu/100ml12 cfu/100ml0
2025excellent2013 cfu/100ml12 cfu/100ml0
2026—1511 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.

Wherry Town — frequently asked questions

Is it safe to swim at Wherry Town today?

Wherry Town is currently rated AMBER: A storm overflow discharged within 5 km in the last 48 hours. Falling tide may draw discharge along the shore. This is guidance only — also check official alerts and use your judgement.

Has there been a sewage spill near Wherry Town?

358 storm-overflow spills were recorded near Wherry Town in 2025 (EA Event Duration Monitoring), and 35 spill events have been logged nearby so far this year.

What is Wherry Town's bathing water classification?

Wherry Town is classified excellent for 2025 by the Environment Agency.

Data & provenance

Last updated
just now (2026-08-26 18:45 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, 9 outfalls monitored within 5 km.
Risk model
v0.4
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Sample timeline (JSON) · All beaches (CSV)
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