MiCharco
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.

Who is acting?

La Laguna reuses 100% of the regenerated water from the Punta del Hidalgo plant

The Punta del Hidalgo treatment plant, operated by Teidagua in La Laguna, supplies regenerated water mainly for agricultural irrigation, and the Town Council reported that all production from August 2026 was reused. A report covering Teidagua’s explanation states that the plant regenerates 100% of the water; the Town Council and the company are working to extend distribution to more farms.

Timeline

  1. 31 Oct 2026

    Batteries to improve solar energy use

    According to San Cristóbal de La Laguna Town Council, the Punta del Hidalgo wastewater treatment plant is incorporating a battery system to improve solar energy use.

    Ayuntamiento de San Cristóbal de La Laguna

  2. 19 Oct 2026

    Desalination for irrigation and full reuse during summer

    According to the report, the Punta del Hidalgo wastewater treatment plant added a desalination unit in 2025 to reduce salts in agricultural irrigation water, and its foreman and a Teidagua technician state that all treated water was reused during summer, with no sea discharges.

    El Día

  3. 16 Oct 2026

    Teidagua explains water regeneration

    According to the report covering Teidagua’s explanation, the Punta del Hidalgo treatment plant regenerates 100% of the water.

    El Día

Date

12 Sept 2026

Updated 31 Oct 2026

Type
In progress
TREATMENT
Where

Punta del Hidalgo treatment plant · San Cristóbal de La Laguna · Tenerife

Who

San Cristóbal de La Laguna Town CouncilOrganiser

TeidaguaImplementing body

Source
MEDIAEl Día · 16 Oct (opens in a new tab)
MEDIAEl Día · 19 Oct (opens in a new tab)
MEDIARTVC (opens in a new tab)
OFFICIALAyuntamiento de San Cristóbal de La Laguna (opens in a new tab)

Tejina residents renew their demands over the Cueva Negra discharges

The residents' association Las Tres Calles de Tejina has again called for solutions to the problems it reports around the discharges and the Cueva Negra outfall, on the Valle de Guerra coast. According to the association, it has raised this situation for years and has put its demands to the competent authorities once more.

The statements recorded here are those of the residents' association and are not an official finding.

Date

29 Aug 2026

Type
Active public complaint
CITIZEN ACTION
Where

Tejina · Cueva Negra · Valle de Guerra · San Cristóbal de La Laguna · Tenerife

Who

AAVV Las Tres Calles de TejinaOrganiser

Source
MEDIAAtlántico Hoy (opens in a new tab)

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

Source
OFFICIALEUR-Lex – Sentencia de 18 de diciembre de 2025, Asunto C-433/23 (opens in a new tab)

New household connections to the sewer network

La Laguna has started works to connect homes that were not yet linked to the public sewer network. The aim is to allow more wastewater to be collected by the network and carried to the treatment plants.

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

Date

1 Dec 2025

Type
In progress
SEWER NETWORK
Where

San Cristóbal de La Laguna · Tenerife

Who

TeidaguaPublic institutions

Source
OFFICIALAyuntamiento de San Cristóbal de La Laguna (opens in a new tab)

Punta del Hidalgo wastewater treatment plant modernised

The modernisation of the Punta del Hidalgo wastewater treatment plant increased its treatment capacity from around 850 to 1,200 cubic metres per day. The works also allow the treated water to be reclaimed for later reuse.

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

Investment: Aproximado / Approximate

Date

14 Oct 2025

Type
Completed
TREATMENT
Where

Punta del Hidalgo · San Cristóbal de La Laguna · Tenerife

Who

TeidaguaPublic institutions

Source
OFFICIALAyuntamiento de San Cristóbal de La Laguna (opens in a new tab)

Public consultation on the discharge from the Bajamar nautical club pool

A resolution of the regional ecological transition directorate opened to public consultation in the Canary Islands official gazette on the discharge permit for the Bajamar nautical club pool.

Date

19 Aug 2025

Type
Announced
REGULATION
Where

San Cristóbal de La Laguna · Tenerife

Who

Government of the Canary IslandsPublic institutions

Source
OFFICIALBoletín Oficial de Canarias (opens in a new tab)

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

Source
OFFICIALTenerife Más Sostenible (opens in a new tab)

€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

Source
OFFICIALCabildo de Tenerife (opens in a new tab)

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

Source
OFFICIALCabildo de Tenerife (opens in a new tab)

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

Source
OFFICIALEUR-Lex – Asunto C-433/23 (Escrito de demanda, 12 de julio de 2023) (opens in a new tab)

Showing 10 of 10 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