Micr’Eau has just completed two maintenance and work contracts on Sattler and VSO biogas stockers for two of the largest wastewater treatment plants in the Ile-de-France region : Carré de Réunion station operated by Sevesc (Suez Group) ) near Versailles (500,000 Hab) and Valenton station operated by Veolia and SIAAP (4 Million Hab); With a fleet installed in France of more than 60 Sattler units in 20 years, the maintenance market is promising a bright future.