The 7th distance education e-learning International Summer School and Workshop on “Wastewater and Biosolids Management” (WWSS22), a scientific event organized in the context of the Postgraduate Study Program “Waste Management”, by the Hellenic Open University (HOU), presents a two-week program, of which one week will be held exclusively with e-distance lectures (11-16 of July) and the second (18-24 of July) distance or live in Ancient Olympia.