COAST & SANITATION

Projects & updates

Actions to improve water quality and protect Tenerife's coast

Explore official projects and measures related to wastewater, discharges and coastal protection, including who is responsible and the current status of each action.

El Médano residents denounce sewage discharges and delays at the regional treatment plant

In a joint letter, Consejo de Barrio and Plataforma vecinal denounce recurring sewage discharges onto El Médano's beaches. According to these organisations, the island council and town council have announced several dates for bringing the regional wastewater treatment plant into operation without delivering solutions.

Date

24 Sept 2026

Type
Ongoing
TREATMENT
Where

Granadilla de Abona · Tenerife

Who

El Médano Neighbourhood CouncilOrganiser

El Médano Residents' PlatformOrganiser

200 tonnes of wet wipes removed from the sewer network in southern Tenerife

Entemanser has removed around 200 tonnes of wet wipes and other waste from the 34 wastewater pumping stations it operates in Adeje, Guía de Isora and Granadilla de Abona during 2026. The work has required more than 6,500 hours. A build-up of this waste can reduce pump efficiency, cause blockages and, in serious cases, contribute to sewage overflows or discharges.

Date

10 Sept 2026

Type
In progress
SEWER NETWORKSANITATION
Where

Adeje · Guía de Isora · Granadilla de Abona · Tenerife

Who

EntemanserPublic institutions

New sanitation network for Granadilla East

The Cabildo has approved the tendering of the first phase of the Granadilla East internal sanitation network, with a budget of approximately €1.98 million.

Investment: Aproximadamente 1,98 millones de euros / Approximately €1.98 million

Date

23 Jul 2026

Type
Out to tender
SANITATIONINFRASTRUCTURE
Where

Granadilla East · Granadilla de Abona · Tenerife

Who

Cabildo de Tenerife (island council)Public institutions

€158 million already executed in Tenerife sanitation programme

ACUAES reported that approximately €158 million had already been executed within the major Tenerife sanitation and wastewater-treatment programme, representing about 67% of planned execution. The update included commissioning work at the Oeste and Los Letrados systems.

This infrastructure action does not in itself imply any change in current bathing-water quality.

Investment: Ejecutados (≈67% de lo previsto) / Executed (≈67% of planned)

Date

20 May 2026

Type
In progress
SANITATIONINFRASTRUCTURE
Where

Guía de Isora · Santiago del Teide · Granadilla de Abona · Arona · San Miguel de Abona · Tenerife

Who

ACUAES (Aguas de las Cuencas de España)Public institutions

Cabildo de Tenerife (island council)Public institutions

Tenerife Island Water CouncilPublic institutions

Los Letrados treatment plant to take in wastewater from El Médano and Los Abrigos

El Día reports that the Los Letrados treatment plant has been operating since 4 February and currently treats wastewater from San Isidro, with a stated inflow of around 10,000 cubic metres a day. Once the pumping works are completed, the coastal settlements of El Médano and Los Abrigos are to be connected in the coming weeks. The article states that the plant, built with an investment of 17.6 million euros, will improve the municipality's sanitation, avoid discharges to the coastline and allow treated water to be reused for agriculture, with Granadilla de Abona expected to become the first municipality in Tenerife free of discharges to the sea before August.

Statements reported by El Día: Rafael Peralbo (Acuaes area manager) on the inflow received; Rosa Dávila (president of the Cabildo de Tenerife) and Blanca Pérez (councillor for the natural environment) on the sanitation model and coastal protection; José Domingo Regalado (mayor of Granadilla de Abona) on the municipality's environmental quality. The project is being delivered with Acuaes and the Government of Spain within a 233.5 million euro investment covering five major works. The "zero discharge" expectation is as reported in the article and is not a finding about bathing-water quality.

Investment: Depuradora de Los Letrados, según El Día / Los Letrados plant, per El Día

Date

17 Mar 2026

Type
In progress
TREATMENTSANITATION
Where

Granadilla de Abona · Tenerife

Who

ACUAES (Aguas de las Cuencas de España)Public institutions

Cabildo de Tenerife (island council)Public institutions

Granadilla de Abona Town CouncilPublic institutions

Tenerife reaches record wastewater treatment capacity with the Granadilla and Guía de Isora plants

El Día reports that the start-up of the Los Letrados plant (Granadilla de Abona) and the Oeste plant (Guía de Isora) raises Tenerife's treatment capacity to more than 35 cubic hectometres a year, over 50% of the island's wastewater flow, extending coverage by more than 80,000 inhabitants. Los Letrados involved an investment of 17.6 million euros and includes 10 kilometres of collectors serving Granadilla town, El Salto and San Isidro, plus an 8.5-kilometre pumping line from the coast (Los Abrigos and La Mareta) to the Ensenada Pelada treatment and pumping station. The article places the works within the Cabildo de Tenerife "zero discharge" strategy and describes Granadilla as a municipality particularly affected by discharges to the sea.

Infrastructure context entry. The article also mentions other works under way (Montaña Reverón in Arona, the Buenos Aires extension in Santa Cruz and the new Punta Brava plant in Puerto de la Cruz) and a joint Acuaes-Cabildo investment of 233.5 million euros. This action does not in itself imply any change in current bathing-water quality.

Investment: Depuradora de Los Letrados, según El Día / Los Letrados plant, per El Día

Date

15 Feb 2026

Type
Completed
TREATMENTSANITATION
Where

Granadilla de Abona · Guía de Isora · Tenerife

Who

ACUAES (Aguas de las Cuencas de España)Public institutions

Ministry for the Ecological Transition and Demographic ChallengePublic institutions

Cabildo de Tenerife (island council)Public institutions

Los Letrados wastewater treatment plant starts receiving wastewater

The Los Letrados wastewater treatment plant began receiving its first flows, initially from San Isidro, as the new Granadilla sanitation and treatment system moved into operation.

Operational milestone of the same project whose construction stage is recorded in the 2023 Granadilla sanitation system entry. This infrastructure action does not in itself imply any change in current bathing-water quality.

Investment: Sistema completo, aproximado / Wider system, approximate

Date

5 Feb 2026

Type
Completed
TREATMENTSANITATION
Where

Granadilla de Abona · Tenerife

Who

ACUAES (Aguas de las Cuencas de España)Public institutions

Cabildo de Tenerife (island council)Public institutions

Tenerife Island Water CouncilPublic institutions

CJEU finds further breaches of the EU Urban Waste Water Treatment Directive affecting Tenerife

The Court of Justice of the European Union ruled that Spain had failed to fulfil several obligations under Directive 91/271/EEC in a number of agglomerations covered by case C-433/23, several of them located in Tenerife. The judgment concerns obligations linked to the collection, treatment and monitoring of urban waste water.

A European judgment records past failures and requires them to be corrected. It does not by itself state the situation at any beach on the day it is consulted.

Date

18 Dec 2025

Type
Court judgment
EU COMPLIANCE
Where

Adeje · Arona · Candelaria · Granadilla de Abona · Guía de Isora · Rosario (El) · Santiago del Teide · San Cristóbal de La Laguna · Santa Cruz de Tenerife · Tenerife

Who

European Union – Court of Justice of the European UnionPublic institutions

Six major projects to reduce wastewater discharges in Tenerife

The Cabildo is advancing six major hydraulic projects across Tenerife as part of a sanitation and wastewater treatment programme aimed at improving wastewater treatment, reducing discharges into the sea and increasing the reuse of treated water.

Date

2 Jul 2025

Type
In progress
SANITATIONINFRASTRUCTURE
Where

Tenerife · Granadilla de Abona · Guía de Isora · Santa Cruz de Tenerife · San Cristóbal de La Laguna · Rosario (El) · Puerto de la Cruz · Orotava (La) · Realejos (Los) · Arafo · Güímar · Candelaria

Who

Cabildo de Tenerife (island council)Public institutions

ACUAES (Aguas de las Cuencas de España)Public institutions

Tenerife Island Water CouncilPublic institutions

€33.6 million approved for six major hydraulic projects

The Cabildo approved €33.6 million to advance six major hydraulic infrastructure projects across Tenerife, including sanitation measures intended to reduce wastewater discharges.

This infrastructure action does not in itself imply any change in current bathing-water quality.

Date

2 Jul 2025

Type
In progress
SANITATIONINFRASTRUCTURE
Where

Granadilla de Abona · Guía de Isora · Santa Cruz de Tenerife · San Cristóbal de La Laguna · Rosario (El) · Puerto de la Cruz · Orotava (La) · Realejos (Los) · Arafo · Güímar · Candelaria · Tenerife

Who

Cabildo de Tenerife (island council)Public institutions

ACUAES (Aguas de las Cuencas de España)Public institutions

Tenerife Island Water CouncilPublic institutions

European Commission refers Spain to the CJEU over wastewater failures affecting Tenerife

The European Commission took Spain to the Court of Justice of the European Union over failures to comply with Directive 91/271/EEC on urban waste water treatment. The case covers several agglomerations in Tenerife, among them Adeje-Arona, Añaza, Candelaria, Golf del Sur, Guía de Isora Litoral, La Esperanza-La Laguna Sur-Santa Cruz-Valles, Puerto de Santiago-Playa la Arena, San Isidro-Litoral, Sueño Azul and Valle de la Orotava.

An infringement procedure is brought against Spain and describes unfulfilled obligations at agglomeration level, not the water quality at a beach on a given day. The required works and connections fall to different administrations.

Date

12 Jul 2023

Type
Under investigation
EU COMPLIANCE
Where

Adeje · Arona · Candelaria · Granadilla de Abona · Guía de Isora · Rosario (El) · Santiago del Teide · San Cristóbal de La Laguna · Santa Cruz de Tenerife · Tenerife

Who

European Union – Court of Justice of the European UnionPublic institutions

Major Granadilla wastewater treatment and collection system under construction

By 2023, construction was progressing across the major Granadilla wastewater treatment and sanitation programme. The programme includes the Los Letrados treatment plant, treatment and pumping infrastructure at Ensenada Pelada, main sewer collectors serving inland areas, and coastal pumping stations and pressure pipelines. This is the earlier construction stage of the system that later began entering operation in 2026.

Earlier stage of the same project as the Los Letrados treatment plant starting to receive wastewater (5 February 2026). This is a regional wastewater infrastructure programme and does not by itself indicate bathing-water conditions at individual beaches.

Date

2023

Type
In progress
SANITATIONTREATMENT
Where

Los Letrados · Ensenada Pelada · inland collectors · coastal pumping stations · Granadilla de Abona · Tenerife

Who

ACUAES (Aguas de las Cuencas de España)Public institutions

Cabildo de Tenerife (island council)Public institutions

Tenerife Island Water CouncilPublic institutions

Showing 12 of 12 actions

Who is acting?

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