• AEDyR (Asociación Española de Desalación y Reutilización).
  • Agència Catalana de l’Aigua (ACA)
  • Agència Catalana de l’Aigua (2022). Demonstrative test of the reuse of reclaimed water at the ERA of Prat de Llobregat 2019.
  • ASERSA (Asociación española de Reutilización Sostenible del Agua)
  • Implementation Decision (UE) 2025/439 of the Commission, by which a list of substances is established for monitoring purposes at Union level in the field of water policy, in accordance with Directive 2008/105/EC of the European Parliament and of the Council.
  • Decree 91/2023, of the Generalitat of Catalonia, which approves the Management Plan for the River Basin District of Catalonia 2022-2027.
  • Decreto 12 giugno 2003, n. 185 – Regolamento recante norme tecniche per il riutilizzo delle acque reflue (Italia) (testo vigente/consolidato).
  • Directive 2024/3019 (Directive (EU) 2024/3019 of the European Parliament and of the Council, relating to the quality of water intended for human consumption).
  • Directive (EU) 2026/805 of the European Parliament and of the Council of 30 March 2026 amending Directives 2000/60/EC, 2006/118/EC and 2008/105/EC with regard to water policy and environmental quality standards.
  • EPA (Guidelines for Water Reuse -2012)
  • EPA (Safe Drinking Water Act (SDWA)/ National Primary Drinking Water Regulations).
  • Govern d’Austràlia (Water Recycling Guidelines Phase 1 – Health and Environmental Risks – 2006)
  • Govern d’Austràlia (Water Recycling Guidelines Phase 2 –  Augmentation of Water Supplies – 2008)
  • Govern de Califòrnia (California Code of Regulations, Title 22 (current version).
  • Hot Spot Reuse (Plataforma Hot Spot Reuse de projectes de reutilització).
  • PTEA (Plataforma Tecnológica Española del Agua).
  • Royal Decree 1085/2024, of October 22, approving the Water Reuse Regulation and amending several Royal Decrees on water management.
  • Royal Decree 3/2023, of January 10, which establishes the technical and sanitary criteria for the quality of drinking water, its control and supply.
  • Royal Decree 665/2023, of July 18, which modifies the Regulation of the Public Hydraulic Domain, approved by Royal Decree 849/1986, and other water regulations. ·
  • Royal Decree 817/2015, of September 11, establishing the criteria for monitoring and evaluating the state of surface waters and environmental quality standards.
  • Salut Pública (Generalitat de Catalunya)
  • UE 2020/741 (Requisits mínims per a la reutilització d’aigua a Europa – 2020).
  • WRE (Water Reuse Europe).