ReportMedia
A large brown patch, reported as a likely accumulation of algae, was observed approaching the coastline near Playa San Juan and Los Gigantes. No bathing prohibition or confirmed wastewater contamination was reported.
Playa San Juan
Water quality, official measurements, discharges and incidents in Guía de Isora, Tenerife.
Historical profile
Good93 / 100
Last official sample:
Some elevated official microbiological results were recorded during the last 24 months, but the overall historical profile remains strong.
This score summarises the available official bathing-water history using MiCharco’s methodology. It does not represent real-time water conditions.
Swimming here today?
Check current conditions (opens in a new tab), warnings and on-site signage before entering the water.
View official analyses, annual classification, incidents and nearby discharges related to Playa San Juan.
Latest official test
15 days ago
E. coli
40
MPN / 100 mlBelow EU ‘Excellent’ reference value
Enterococci
5
MPN / 100 mlBelow EU ‘Excellent’ reference value
Nearest discharge
303 m
Authorisation in progressRelevant pressure factor
Latest official status
OpenCurrent beach state published by Gobierno de Canarias: APTA PARA EL BAÑO
Incidents · 30 days
None recordedAnnual quality
ExcellentHistorical context
Latest recorded incidents
Recorded water-quality incidents and official notices.
Based on the trusted official and media sources monitored by MiCharco.
Historical context
Historical profile
This score summarises the available official bathing-water history using MiCharco’s methodology. It does not represent real-time water conditions.
Good93 / 100
Last official sample:
Some elevated official microbiological results were recorded during the last 24 months, but the overall historical profile remains strong.
Official data
Measurement age visible · Not real timeLatest official measurements
Period
| Date | Sampling point | E. coli | Enterococci | Official status | Source | Date retrieved | Last official update |
|---|---|---|---|---|---|---|---|
| 7 Sept 2026 | CENTRO | 40 MPN / 100 ml | 5 MPN / 100 ml | Suitable for bathing | 21 Sept 2026 | 21 Sept 2026 | |
| 24 Aug 2026 | CENTRO | 9 MPN / 100 ml | 29 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 10 Aug 2026 | CENTRO | 9 MPN / 100 ml | 9 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 20 Jul 2026 | CENTRO | 9 MPN / 100 ml | 29 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 6 Jul 2026 | CENTRO | 9 MPN / 100 ml | 29 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 |
Sample evolution
Recent microbiological measurements
CENTRO
14 Oct 2025–7 Sept 2026 · Official samples
E. coliEnterococci
Period
Recent official bathing-water samples. Lower values generally indicate lower levels of faecal indicator bacteria.
Beaches near Playa San Juan
Frequently asked questions
What is the water quality at Playa San Juan?
The official annual classification for Playa San Juan is “Excellent”, while MiCharco’s historical profile is “Good”. MiCharco’s profile is based on the available official microbiological measurements and relevant recorded context. They use different methodologies and time frames; neither represents real-time water conditions.
When was the latest official sample taken?
The most recent official sample available for Playa San Juan was taken on 7 Sept 2026. Bathing-water sampling is not daily; every sample is shown with its own date.
What were the latest E. coli and enterococci values?
In the official sample of 7 Sept 2026, E. coli measured 40 UFC/100 ml and intestinal enterococci 5 UFC/100 ml. These are values from that specific sample, not a measurement of today.
Are there registered discharges near Playa San Juan?
According to the official land-to-sea discharge census, the nearest registered point is 303 m from Playa San Juan. 7 registered points within 3 km is shown as contextual pressure and does not affect the historical profile. A registered discharge does not in itself imply a water-quality problem.
Have there been recent closures or incidents at Playa San Juan?
There are no incidents with current relevance. The latest recorded incident is from 22 Apr 2025 and remains visible as part of the historical record.
Where does MiCharco's data come from?
From official sources: the Government of the Canary Islands bathing-water sampling, NÁYADE information where applicable, the official land-to-sea discharge census and communications from local administrations. Every record links to the original source.
Does MiCharco's data say whether I can swim today?
Not necessarily. An official sample may have been taken days or weeks earlier, and a good past sample does not guarantee today's conditions. For current restrictions, always check official notices and on-site signage.
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