Surface water quality and heavy metal pollution assessment in the Middle Moulouya Basin (Morocco): Implication to sustainable water managementRachid Zarzouki, Nordine Nouayti, Abdrrahim Nouayti, Anass Aynaou, Hamza El Fadili and Anas KrimeE3S Web Conf., 726 (2026) 01034DOI: https://doi.org/10.1051/e3sconf/202672601034