This sector focuses on water resources and aquatic environments. It includes, among other things, water sanitation, reuse, and everything related to drinking water. It also features networks and intelligent pilot systems specialized in the water domain.

PEXE Members
- AQUA VALLEY, the cluster >>>>>
- BRETAGNE ÉCO-ENTREPRISES, the regional cluster for ecological and energy transition in Brittany >>>>>
- CINOV, the Federation of Unions for Consulting, Engineering, and Digital Services >>>>>
- CLIMATE-KIC, the main climate innovation initiative of the European Union >>>>>
- Club IDF ECO-ENTREPRISES, brings together SMEs and intermediate-sized companies in the environment and energy management sectors in Île-de-France >>>>
- Pôle DREAM Water and Environments, the cluster for Durability of Resources in Water linked to Environments >>>>>
- ÉA ÉCO-ENTREPRISES, regional cluster dedicated to eco-activities >>>>>
- GRAND PARIS Sud Seine Essonne Sénart, >>>>>
- HYDREOS, the water cluster in the Grand Est region >>>>>
- ENVIRONMENT CLUSTER NOUVELLE-AQUITAINE, >>>>>
- MEDITERRANEAN SEA CLUSTER, the competitiveness cluster in Provence-Alpes-Côte d’Azur, Occitanie, and Corsica >>>>>
- AXELERA, Competitiveness Cluster for Chemistry and Environment in Auvergne-Rhône-Alpes >>>>>
- CCI PARIS ÎLE-DE-FRANCE, Chamber of Commerce and Industry >>>>>
- CD2E, the Center for Eco-business Development >>>>>
- CLUB ADEME International, brings together innovative French eco-companies developing part of their activity internationally or seeking to export >>>>>
- CLUSTER GREEN, the Regional Grouping of Environmentally Engaged Companies in Réunion >>>>>
- CRESCENDO, The Business Innovation Centre >>>>>
- GREENTECH VERTE, supports innovators working for ecological transition and the Climate Plan >>>>>
- ECOMASTERCLASS ADEME RETIS NETWORK, training and collective coaching program for innovation professionals >>>>>
- SOLTENA, Solutions for Ecological Transition in Nouvelle-Aquitaine >>>>>