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.

Santa Cruz announces legal action over delays to the Buenos Aires wastewater treatment plant

Santa Cruz council is considering legal action over delays to the Buenos Aires treatment plant expansion. Separately, the Prosecutor’s report records an investigation into possible discharges linked to deficiencies at the plant and Cabo Llanos pumping station, reported by Canarias Ahora on 2 November. No judicial conclusion on responsibility or verified impact on a specific beach has been established.

Timeline

  1. 2 Nov 2026

    Press reports a prosecutor investigation into possible discharges

    On 2 November, Canarias Ahora reported on preliminary investigative proceedings 258/2025, recorded in the Prosecutor’s official report on its 2025 activity and opened following a complaint by an association of environmental professionals. The investigation concerns possible discharges without adequate treatment or control linked to alleged deficiencies at the Buenos Aires treatment plant and Cabo Llanos pumping station. This is the publication date, not the opening date of the proceedings. The investigation is separate from the legal action being considered by the council; it establishes neither a proven offence nor contamination of a particular beach.

    Fiscalía de Canarias · Memoria de actividad 2025Canarias Ahora (elDiario.es)

  2. 23 Oct 2026

    The council considers legal action over expansion delays

    According to councillor Carlos Tarife, Santa Cruz de Tenerife City Council is considering legal action against the Ministry for Ecological Transition and the Demographic Challenge over delays to the Buenos Aires treatment plant expansion and will seek permission to take over the works. Tarife says completion has been postponed until June 2028 and that the discharge reduction scheduled for November 2026 will not be achieved. The report describes intended action, not a confirmed filing.

    El Día

Date

23 Oct 2026

Updated 2 Nov 2026

Type
Announced
TREATMENT
Where

Santa Cruz de Tenerife · Tenerife

Who

Santa Cruz de Tenerife City CouncilOrganiser

EMMASAPublic institutions

Environmental Prosecutor's Office of Santa Cruz de TenerifePublic institutions

New Añaza pumping station completed under Santa Cruz Zero Discharge Plan

Santa Cruz completed the new Añaza wastewater pumping station as part of its Zero Discharge programme. Wastewater from the area can now be conveyed into the sanitation system, while the submarine outfall is intended mainly for exceptional rainfall-related situations.

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

Date

18 Sept 2026

Type
Completed
SANITATIONINFRASTRUCTURE
Where

Añaza · Santa Cruz de Tenerife · Tenerife

Who

Santa Cruz de Tenerife City CouncilPublic institutions

EMMASAPublic institutions

New Los Alisios pumping station strengthens Santa Cruz Zero Discharge Plan

Santa Cruz de Tenerife has completed the new Los Alisios wastewater pumping station, part of the Zero Discharge Plan, to improve the capacity and reliability of the south-west district sewer network and reduce the risk of coastal discharges.

The project involved an investment of approximately €7.18 million. The new station increases wastewater pumping capacity and forms part of a network of new infrastructure including works in Añaza, Acorán and elsewhere in the municipality. It is one measure within a broader municipal programme and does not mean every wastewater or discharge problem in Santa Cruz has automatically disappeared.

Investment: 7,18 M€

Date

6 Jul 2026

Type
Completed
INFRASTRUCTURESANITATION
Where

South-west district · Santa Cruz de Tenerife · Tenerife

Who

Santa Cruz de Tenerife City CouncilPublic institutions

EMMASAPublic institutions

San Andrés connects its wastewater to the Santa Cruz treatment network

Santa Cruz de Tenerife has completed the works that bring San Andrés wastewater into the municipal sanitation network for treatment at the Buenos Aires treatment plant (EDAR de Buenos Aires), improving sanitation management in this coastal area.

A completed infrastructure project. It is not a bathing incident and does not in itself imply any change in the water quality of nearby beaches.

Date

6 Jul 2026

Type
Completed
SANITATIONINFRASTRUCTURE
Where

San Andrés · Santa Cruz de Tenerife · Tenerife

Who

Santa Cruz de Tenerife City CouncilPublic institutions

Santa Cruz de Tenerife zero-discharge programme

Santa Cruz de Tenerife Town Council, through Emmasa, is running the zero-discharge project, with a cited investment of more than EUR 14 million. Completed actions include the Taganana treatment plant, the conversion of pumping stations in San Andrés and along the Añaza-Acorán-Alisios corridor, and the removal of several discharge conduits (one in San Andrés, two on the south-west coast and three in Anaga: Almáciga, Roque de Las Bodegas and Tachero). In May 2026 the council gave 1 August as the date on which zero discharge was expected to be reached. This is an announced target, not a confirmed result: the expansion of the Buenos Aires treatment plant, a responsibility of the Ministry for the Ecological Transition, is still pending. MiCharco does not record zero discharge as achieved until there is official confirmation.

Date

31 May 2026

Type
In progress
SANITATION
Where

Santa Cruz de Tenerife · San Andrés · Anaga · Añaza · Tenerife

Who

Santa Cruz de Tenerife City CouncilOrganiser

EMMASAImplementing body

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

Taganana wastewater treatment plant inaugurated

The new Taganana wastewater treatment plant was inaugurated to serve Taganana, Roque Las Bodegas and Almáciga. The facility replaces older sanitation solutions and forms part of efforts to reduce untreated wastewater pressure in the Anaga coastal area.

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

Investment: Aproximado / Approximate

Date

17 Jun 2025

Type
Completed
TREATMENTSANITATION
Where

Anaga · Taganana · Santa Cruz de Tenerife · Tenerife

Who

Santa Cruz de Tenerife City CouncilPublic institutions

Concession to end the discharge of treated water into the sea at San Andrés (Zero Discharge)

Resolution published in the Canary Islands official gazette authorising occupation of the coastal public domain to pump water from the San Andrés pumping station to the coastal collector. It forms part of the Zero Discharge policy, with NextGenerationEU funding.

Date

22 Jan 2025

Type
Announced
COASTAL WORKS
Where

Santa Cruz de Tenerife · Tenerife

Who

Government of the Canary IslandsPublic institutions

Major state-backed Tenerife sanitation programme expanded

The wider Tenerife sanitation programme was expanded to cover major regional systems including Arona Este, Tenerife Oeste, Acentejo, Granadilla and Valle de La Orotava, together with further works in Puerto de la Cruz and future infrastructure in Isla Baja.

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

Date

9 Jan 2025

Type
In progress
FUNDINGSANITATION
Where

San Cristóbal de La Laguna · Tegueste · Tacoronte · Santa Cruz de Tenerife · Arico · Puerto de la Cruz · Icod de los Vinos · La Guancha · San Juan de la Rambla · Tenerife

Who

Cabildo de Tenerife (island council)Public institutions

Ministry for the Ecological Transition and Demographic ChallengePublic institutions

ACUAES (Aguas de las Cuencas de España)Public institutions

Public consultation on the integrated environmental permit for the Buenos Aires treatment plant

The Canary Islands official gazette opened a thirty working day public consultation on the integrated environmental permit for the Buenos Aires treatment plant.

Date

16 Oct 2024

Type
Announced
REGULATION
Where

Santa Cruz de Tenerife · Tenerife

Who

Government of the Canary IslandsPublic 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

Showing 13 of 13 actions

Who is acting?

Public administrations, organisations and groups linked to the actions documented by MiCharco. Select one to see its documented actions.

Public bodies

Civil society and community groups