Mother Ivey's Bay water quality
GREENdesignated bathing water · · South West Water
Mother Ivey's Bay 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 152 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): 8.0 mm
Official EA classification
excellent (2025)
Latest official sample
2026-08-17 — 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
- 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 · 2026-06-10
- South West Water owner admits firm must learn lesson from Devon parasite outbreak · 2026-06-10
- Antibiotic residues in wastewater found to fuel drug resistance : study - Xinhua · 2026-06-09
- St Michael Mount Cornwall among best wild swimming spots · 2026-07-19
Storm-overflow spills near here, by year (EDM)
Recent spills near here (precise, SWW)
- spill, 23 min2026-08-27 · ~0.4 km
- spill, 9 min2026-07-01 · ~2.2 km
- spill, 2 min2026-06-18 · ~2.8 km
- spill, 2 min2026-06-18 · ~2.8 km
- spill, 17 min2026-06-17 · ~0.4 km
- spill, 17 min2026-06-17 · ~0.4 km
Full spill history near Mother Ivey's Bay
Download CSVEvery storm-overflow discharge Glanmor has recorded within 5 km of Mother Ivey's Bay, newest first.
4 discharge events
| Start | End | Outfall | Distance |
|---|---|---|---|
| 2026-07-01 09:00 | 2026-07-01 09:08 | TREVONE BAY | ~2.2 km |
| 2026-06-18 08:45 | 2026-06-18 08:47 | TREYARNON STREAM | ~2.8 km |
| 2026-06-17 07:26 | 2026-06-17 07:43 | MOTHER IVEYS BAY (C) | ~0.4 km |
| 2026-03-02 14:43 | 2026-03-03 01:13 | TREVONE BAY | ~2.2 km |
10 precise spill records (duration & volume)
| When | Detail | Distance |
|---|---|---|
| 2026-08-27 03:37 | spill, 23 min | ~0.4 km |
| 2026-07-01 09:00 | spill, 9 min | ~2.2 km |
| 2026-06-18 08:45 | spill, 2 min | ~2.8 km |
| 2026-06-18 08:45 | spill, 2 min | ~2.8 km |
| 2026-06-17 07:26 | spill, 17 min | ~0.4 km |
| 2026-06-17 07:26 | spill, 17 min | ~0.4 km |
| 2026-03-03 12:25 | spill, 10 min | ~1.6 km |
| 2026-03-03 12:25 | spill, 10 min | ~1.6 km |
| 2026-03-02 14:43 | spill, 630 min | ~2.2 km |
| 2026-03-02 14:43 | spill, 630 min | ~2.2 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 | — | 3 | 10 cfu/100ml | 10 cfu/100ml | 0 |
| 2021 | — | 5 | 12 cfu/100ml | 14 cfu/100ml | 0 |
| 2022 | — | 10 | 10 cfu/100ml | 13 cfu/100ml | 0 |
| 2023 | — | 10 | 16 cfu/100ml | 15 cfu/100ml | 0 |
| 2024 | — | 10 | 10 cfu/100ml | 10 cfu/100ml | 0 |
| 2025 | excellent | 20 | 11 cfu/100ml | 11 cfu/100ml | 0 |
| 2026 | — | 11 | 10 cfu/100ml | 10 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.
Mother Ivey's Bay — frequently asked questions
Is it safe to swim at Mother Ivey's Bay today?
Mother Ivey's Bay 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 Mother Ivey's Bay?
152 storm-overflow spills were recorded near Mother Ivey's Bay in 2025 (EA Event Duration Monitoring), and 4 spill events have been logged nearby so far this year.
What is Mother Ivey's Bay's bathing water classification?
Mother Ivey's Bay is classified excellent for 2025 by the Environment Agency.
Data & provenance
- Last updated
- 1 h ago (2026-08-27 15:45 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, 3 outfalls monitored within 5 km.
- Risk model
- v0.4
- Download
- Sample timeline (JSON) · All beaches (CSV)
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