AES Laboratoire, Idra Environnement, BRGM, Véolia Eau, Degrémont Suez, EMO France, Hypred, Laboratoires Wolff and Saunier eau et environnement.

These companies, each of which is present throughout France, are involved in the environmental sector in the same way as the many design offices and high-tech companies. Their sectors of activity reflect the needs expressed by industrialists and local authorities (water treatment, diminution of harmful effects, removal of pollution etc).

List of companies in the environmental sector