text: As of 2012, these were the twelve member societies of the CEEES:
  *Italy: Associazione Italia Tecnici Prove Ambientali (AITPA)
  *France: Association pour le Développement des Sciences et Techniques de l'Environnement (ASTE)
  *Belgium: Belgian Society of Mechanical and Environmental Engineering (BSMEE)
  *Germany: Gesellschaft für Umweltsimulation (GUS)
  *Finland: Finnish Society of Environmental Engineering (KOTEL)
  *Czech Republic: National Association of Czech Environmental Engineers (NACEI)
  *Austria: Österreichische Gesellschaft für Umweltsimulation (ÖGUS)
  *Netherlands: PLatform Omgevings Technologie (PLOT)
  *United Kingdom: Society of Environmental Engineers (SEE)
  *Sweden: Swedish Environmental Engineering Society (SEES)
  *Portugal: Sociedade Portuguesa de Simulacao Ambiental e Aveliaca de Riscos (SOPSAR)
  *Switzerland: Swiss Society for Environmental Engineering (SSEE)
  Each member society successively holds the presidency and the secretariat for a period of two years.