Basic hygiene services in schools depends on clean water being available for handwashing. AWGs could be designed specifically for this application. Table 5 below shows the national statistics. The world file tables available at https://washdata.org/data/downloads also show urban and rural statistics so quite detailed market analyses are possible.
Table 5: Forty-four countries, areas, or territories have school basic hygiene services less than 75% of the school age population. This data is for 121 out of 180 countries in the database. For 59 countries there is no data for school basic hygiene services. The blog author condensed and sorted the data according to lowest to highest national proportion of basic hygiene services. Data source: Progress on household drinking water, sanitation and hygiene 2000-2020: five years into the SDGs. Geneva: World Health Organization (WHO) and the United Nations Children’s Fund (UNICEF), 2021. Licence: CC BY-NC-SA 3.0 IGO. Data gaps are indicated by a dash (-).
I have been researching and developing drinking-water-from-air technologies since 1984. As a physical geographer, I strive to contribute an accurate, scientific point-of-view to the field.