Bathing reopened later the same day after authorities resolved the incident. The initially suspected hydrocarbon spill was ruled out and was linked instead to an incident involving an inert-gas production system on a vessel.
Playa Valleseco · El Bloque
Water quality, official measurements, discharges and incidents in Santa Cruz de Tenerife, Tenerife.
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.
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 Valleseco · El Bloque.
Current beach state published by Gobierno de Canarias: APTA PARA EL BAÑO
Latest recorded incidents
Recorded water-quality incidents and official notices.
Bathing was preventively prohibited across the Valleseco coastline after an incident initially reported as a possible marine discharge of unknown origin.
The bathing area returned to operation with a yellow flag. The municipality reported a small surface oil patch likely related to sea conditions, while no bathing prohibition was issued by the health authority following routine sampling.
Bathing was temporarily prohibited after dead fish, oil and floating marine debris were observed in the bathing area. Samples were taken to assess water quality and the material present.
El Bloque and Los Charcos reopened on 18 September after follow-up analyses returned favourable values and normal parameters.
Santa Cruz de Tenerife City Council prohibited bathing at El Bloque and Los Charcos in Valleseco after routine monitoring detected indicators of water contamination at both bathing areas.
A large brown patch was observed along the Valleseco coastline, particularly around El Bloque and Acapulco. According to reporting, the Santa Cruz de Tenerife municipal emergency coordination centre (CECOPAL) raised a red flag and advised against bathing on 12 August 2023 after microalgae and hydrocarbon residues were detected in the area. Reporting two days later still described the red flag at both bathing areas. No official reopening date has been located, so MiCharco keeps this episode as historical and not as a restriction currently in force.
Based on the trusted official and media sources monitored by MiCharco.
Historical profile
This score summarises the available official bathing-water history using MiCharco’s methodology. It does not represent real-time water conditions.
Last official sample:
Some elevated official microbiological results were recorded during the last 24 months, but the overall historical profile remains strong.
Latest official measurements
| Date | Sampling point | E. coli | Enterococci | Official status | Source | Date retrieved | Last official update |
|---|---|---|---|---|---|---|---|
| 7 Sept 2026 | PM1 | 29 MPN / 100 ml | 29 MPN / 100 ml | Suitable for bathing | 21 Sept 2026 | 21 Sept 2026 | |
| 24 Aug 2026 | PM1 | 9 MPN / 100 ml | 9 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 10 Aug 2026 | PM1 | 30 MPN / 100 ml | 9 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 20 Jul 2026 | PM1 | 9 MPN / 100 ml | 9 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 | |
| 6 Jul 2026 | PM1 | 29 MPN / 100 ml | 29 MPN / 100 ml | Suitable for bathing | 17 Sept 2026 | 17 Sept 2026 |
Sample evolution
Recent microbiological measurements
PM1
25 May 2026–7 Sept 2026 · Official samples
Recent official bathing-water samples. Lower values generally indicate lower levels of faecal indicator bacteria.
Beaches near Playa Valleseco · El Bloque
Frequently asked questions
What is the water quality at Playa Valleseco · El Bloque?
The official annual classification for Playa Valleseco · El Bloque 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 Valleseco · El Bloque 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 29 UFC/100 ml and intestinal enterococci 29 UFC/100 ml. These are values from that specific sample, not a measurement of today.
Are there registered discharges near Playa Valleseco · El Bloque?
According to the official land-to-sea discharge census, the nearest registered point is 486 m from Playa Valleseco · El Bloque. 2 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 Valleseco · El Bloque?
There are no incidents with current relevance. The latest recorded incident is from 31 Oct 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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