Translate the following English sentence to French:
"Mr President, first and foremost, I want to say that protection of the aquatic environment, both surface water and groundwater, is probably one of our most important duties of all."
Permettez-moi de déclarer en priorité que la protection du milieu aquatique - que ce soient les eaux de surface ou les eaux souterraines - constitue l'une de nos principales obligations.