Benoit JONCHERAY is still present for FIRMUS on the Antarctic polar base CONCORDIA since November 2017. This year he is monitoring the operation of the grey water recycling process, which has been in operation for more than 12 years, but he is also taking the necessary measurements to upgrade this station. This upgrade has been entrusted to us by IPEV and should be effective for wintering 2020. This involves simplifying the process, redesigning the frame and replacing several controls and the control/electrical cabinet. Our expertise and know-how in the field of greywater recycling give us a perfect knowledge of this application.