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Portugal Water Reuse and Reclaimed Water Production (Law No. 119/2019)

Portugal Water Reuse and Reclaimed Water Production (Law No. 119/2019): Portugal Water Reuse Law: Authorised Reclaimed Water Production and Risk Controls

Maílis Carrilho
Written by Maílis Carrilho
Updated on June 7th, 2026

Summary

Portugal’s Decree-Law 119/2019 establishes the legal regime for producing reclaimed water (ApR) from wastewater treatment and regulating its use to protect health and the environment. It creates an authorisation and control framework for operators producing and distributing ApR and for end users, supported by quality and risk management requirements linked to the intended uses (such as irrigation, urban, and industrial applications). Compliance risk concentrates on authorisation sequencing and continuous monitoring: supplying reclaimed water without the correct title or with poor quality and risk controls can trigger suspension and corrective enforcement actions.

Details

Jurisdictions
  • Portugal
Mandatory for

Legally binding for:

Wastewater treatment operators producing ApR.

Users and operators distributing reclaimed water under authorised schemes.

Exemptions

Applies to defined reuse contexts; potable water supply is outside the ApR purpose.

Specific uses may be prohibited or restricted if health or environmental protection cannot be ensured (risk-based).

Deep dive

2 min read
Published Jun 7, 2026

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What’s Required

Portugal established a dedicated legal regime for producing and using reclaimed water (“Água para Reutilização”, ApR) obtained from wastewater treatment.

Key requirements include:

  • Decree-Law 119/2019 sets the legal regime for producing water for reuse (ApR) from treated wastewater and governs its use to prevent harmful effects on health and the environment.

  • Requires appropriate control of reclaimed water quality and risk management aligned with permitted end uses (for example, irrigation, urban uses, industry, landscape).

  • Establishes the framework for authorising production and use, typically linking to water resource licensing and oversight by competent authorities.

Important Deadlines

  • Before supply/use: authorisations and compliance conditions must be met (project-driven).

  • Continuous: monitoring, quality, and operational controls throughout production and distribution.

Current Status

In force since 2019 as Portugal’s baseline reclaimed water legal regime.

Penalties for Non-Compliance

  • Administrative enforcement for operating without authorisation, failing monitoring duties, or supplying reclaimed water that does not meet required conditions.

  • Suspension orders and corrective requirements where public health or environmental risk is identified.

Examples of Known Violations

  • Reclaimed water is supplied or used without the proper authorization.

  • Inadequate monitoring and risk controls create exposure under public health and environmental enforcement pathways.

Resources


Maílis Carrilho
Added by:
Maílis Carrilho
Sustainability Research Analyst
Maílis Carrilho is a Sustainability Research Analyst (Intern) at Net Zero Compare, contributing research and analysis on climate tech, carbon policies, and sustainable solutions. She supports the team in developing fact-based content and insights to help companies and readers navigate the evolving sustainability landscape.
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Added on Jun 7, 2026 by Maílis Carrilho ·